If that description doesn't make sense, here's what the structure looks like. The catch is that if you wanna use this new hard drive format, it requires you performing a clean install of your OS. Other drive manufacturers are looking at this up, so everybody might get to benefit from Advanced Formatting and the extra space. Hoo-ray. [WD, WD (PDF) via PC Perspective via Electronista, Image via Wikipedia]

The Old Champs

If you remember the HD media player battlemodo, I awarded WDTV Live and Seagate FreeAgent Theater+ the two top spots. The WD is still best for people who want a smooth interface and a hopefully increasing number of online services for streamed media. (YouTube and Pandora now, who knows what else?) It's actually the Seagate that gets KO'd by Asus.

The New Buttkicker

More functional than frilly, both the O!Play and the Theater+ handle every video file I could throw their way, they both read Mac- and PC-formatted drives, they both browse the local network well, they both read DVD menus from ripped ISO files, they both have superb video output—and they both suffer from having stupid punctuation characters in their name. But one costs $30 less than the other, according to Amazon's current prices. Not only is the O!Play cheaper, but its second USB jack is also an eSATA port which might come in handy when you start getting 1080p rips of all your favorite movies, and it has a file-copy function that lets you dump stuff from one drive to another, or to drives on the network.

I had only one major complaint with the Asus: Every time I watched a video ripped from DVD, it showed chapter numbers in a big white font for an extended period, about 15 seconds. Not only did pushing every single button I could think of not help this, but I couldn't even advance from one chapter to another by using the skip-forward button, so why do I need to know what chapter it is in the first place? A shame, but probably a bug that can be fixed really easily.

The Final Score

As I said in the battlemodo:

• If you want a full-on pirate kit, with torrent client built-in and everything, go with the Popcorn Hour (or the cheaper, quirky Patriot Box Office).
• If you want something with a nice interface and Pandora streaming music, go with WDTV.
• If you're choosing something to work with your iTunes collection of music and video, or something for your parents, probably still better to pick Apple TV—and tell them to buy or rent all their videos.

But if you want something that can play a ton of home-ripped video, or stuff you've acquired in some other high-bandwidth way, Asus is a better deal than Seagate—just as tough to stump in my battery of file format tests, with a few extra nice features. That's my best and final recommendation for HD video file playback—at least until Roku figures out what the USB jack on the HD-XR is really for. [Asus]

Great price for a high-def HDMI video player

Plays every video file I could throw at it, including DivX 7 MKVs, high-def H.264, even obscure home movies from out-of-date cameras

A bit larger than some products out there, but not by much

No streaming internet services

Annoying bug that shows chapter numbers in a large white font as you watch movies ripped from DVD

The goal here is simple: Play all the videos that I have ripped from DVD, downloaded from the web, shot with my own cameras or obtained in some other manner, no matter what the format. It sounds simple, but Apple TV can't do it. Neither can the Xbox 360 or PlayStation 3. Video codecs and containers are a nightmare to keep track of, and even more of a nightmare to convert.

This isn't about photos and music. Apple TV is better at both of those than any of this stuff. It's also not about renting movies or buying movies, or even streaming movies from Netflix. Roku has a nice cheap box for that, and Apple TV is suitable if you just want to live inside Steve Jobs' media store. This is about playing non-DRM movies, pure and simple.

The names might be familiar to you: The Popcorn Hour C-200 by Syabas is quickly gaining cult status (and has its own hacker wiki), while the other four smaller boxes come from brands you probably have experience with, including WD, Seagate, Netgear and Patriot. None have built-in wireless, but they all have Ethernet ports.

My two main tests were simple—I loaded PC and Mac formatted external hard drives with a variety of files ranging from H.264 MP4s to WMVs of several vintages, from raw AVCHD files in MTS wrappers to the hot new DivX 7 MKV. Then I browsed through my local network to a NAS that had a cache of similar files. Could I see them? Could I play them? These shouldn't be issues, but they're big issues.

Here's a rundown of each machine, and how they fared in testing:

As you can see, there were clear leaders given my criteria above, but what struck me was how each one differed. Truth is, depending on who you are, any one of these might be the best fit. Here's what really separates them:

WD TV Live - $150

I would have given this thing the solo spot at the top if it weren't for a few dings that might very well be fixed in a firmware update: It won't show you DVD menus on ripped DVD images, and when you play files with the suffix .m4v, it won't fast forward or rewind. Weird bug, and can be fixed if you just change .m4v to .mp4, but since that's the default file naming for Handbrake's "Apple TV" profile, it could be a problem for people, like me, who spent months ripping their entire DVD collection that way.

WD's strengths include a friendly user interface with handy video previews, some promising early online services (including Pandora), and the most reasonable photo and music handling I've seen in this cluster of gadgets.

Seagate FreeAgent Theater+ - $150

I loved this when I tested it a few weeks ago, despite its fugly interface, and it holds up under testing. It does better with ripped .ISO files than WD, doing both DVD menus and chapters (and it doesn't have that weird .m4v bug either). Video was better, especially when running 1080p content. And when it came to browsing my Linksys NAS in search of movies, it could reach more and read more than the WD.

The tradeoff is that the interface is bad, and there's almost nothing in the way of online services. It gets points for making an attempt at sorting music, and displaying photos, but if that's a priority, WD is the better call.

Popcorn Hour C-200 - $300

Hardcore AV nerds love this thing, and I understand why. There are more ways to get at video content than in any other set-top box I've ever seen, and if you really know how to hack, there's really not much it can't do.

It's a big ole thing—they call it a "network tank," and despite remind me of the far cooler ones in Tron, I get it. It has an internal BitTorrent client and you can plug in a Blu-ray drive, for God's sake. I found very few video formats that it wouldn't support (FLV was one) but I had to take major points off because for being so big, it has a lame interface, and it comes with an RF remote that only worked when I stood within 3 feet. They even mention that there might be problems with interference, and that if people experience that, they can buy the IR remote. Great, thanks.

My only question—and, commenters, it's not rhetorical—is why spend $300 on this (plus extra for the optional internal HDD and the IR remote) when you can just buy a home-theater PC?

Patriot Box Office - $130

This was the dark horse of the group, being a late entry by a company known only for computer memory. I was surprised at how well it held up. It actually could decode more tested formats than any other device in this lineup—it did Flash video (FLV), which the three above can't render. Only the WD and the Patriot show you video previews, too. As small as it is, there's a space for a 2.5" SATA drive in there, and even a BitTorrent client. You can copy files to and from different drives and the network, and it's the cheapest of the lot, at $130.

So why did it come in a distant 3rd? Unlike the three above, it can't read Mac formatted hard drives, and its video quality was noticeably the worst of the batch. That said, if you are a hacker sort and want something to play with that doesn't cost as much as Popcorn, set your sights on this.

Netgear Digital Entertainer Live

As you can probably tell by now, Netgear had the most disappointing box of the lineup, despite its Apple TV ripoff of a look and feel. Lack of Mac media support and the inability to read key file formats, like DivX 7 and AVCHD, meant it couldn't pass muster with real video fanatics. Its biggest point of woe was the fact that it didn't support any file over 720p in resolution—whether that's a software thing or a hardware thing, it's sure not future-proof, and probably best to stay away.

I also didn't like the fact that its interface is laid out entirely for retail, like an Apple TV without the panache, or a Roku box that costs more and doesn't do Netflix. Local files were not a priority, and despite the friendly interface, it doesn't even make an attempt to differentiate photos and music. I did give it a gold star for online services, but only because it had the most in this group—if online services are what you love, buy a Roku, or a TiVo, or an Xbox, or a friggin' Apple TV.

Still not sure what you're looking for, check the spec comparisons here:

Update: At the urging of many readers, I recently tested the Asus O!Play and found that it does all of the things the Seagate can do (except fit Seagate-branded FreeAgent drives inside), but at a lower cost—$100 vs $130 in today's pricing. If you have narrowed your options down to the Seagate, skip over to my Asus O!Play review before making your final decision.

• Western Digital's TV HD Live got a slight update today. Besides the revamped casing, the biggest news here is the addition of DLNA and Bonjour support. Just like the previous generation, there's no onboard storage to speak of, but the better streaming support makes that much less of an issue. You can grab one at Best Buy now for $120. [Electronista]

The good news is that these things work well, despite the larger drive and lower power. They're not about performance—5400 rpm only—but when I tested moving a 1GB file to and from, I got it in under 30 seconds, just a hair slower than the same file moved to and from faster FireWire 800 drives. I didn't do any real benchmarking, but I am convinced that the USB is going to be the bottleneck, not the bigger drive (shown below with a 320GB USB-only and a 500GB FW800/USB combo). The FreeAgent was even designed to fit the USB dock and FreeAgent Theater+, though not subtly.

That brings us to the bad news, which many of you already know: Despite being portable bus-powered 2.5" drives, the three-platter HDDs inside these casings are not capable of being ripped out and stuck into your laptop, at least, not without some hackery I am not qualified to endorse. So, in lieu of a full review, I offer this: It works, it's not noticeably sluggish given the added weight, and it feels really good to be able to carry a whole terabyte wherever I want. [Seagate]

As cool as the e-labels concept is—soon to be found on My Book Elite (USB only, up to 2TB for $280) and My Book Studio (FW800 and USB, up to 2TB for $300)—I don't know how profound a single 12-character label on the face of such a massive drive can be. Then again, maybe you're supposed to buy them in identical pairs. The label, which, like the E-Ink found on Amazon's Kindle, stays visible when there's no power going to it, could in that case save you from embarrassment, possibly even job loss/misdemeanor charges/etc. Below the label is a status indicator—how many GB are left, plus a rough visual estimate.

The My Passport Elite line gets a visual refresh that first appeared in the less feature-bestowed Passport Essential. Slimmer and more rounded at the edges, the Elite line gets a metallic red, blue or charcoal finish and a dock—top price is $170 for a 640GB 2.5" USB 2.0 bus-powered drive. The dock thing makes sense in one particular situation: You have a laptop and a desktop that you regularly shuttle between. The Elites will show capacity status on an LED indicator, and will indicate encryption with a light-up key icon on the side, so you feel extra safe. Speaking of safe, all of the hard drives also come with 256-bit hardware encryption. [WD]

LAKE FOREST, Calif., July 27 /PRNewswire-FirstCall/ — WD (NYSE: WDC) today announced two new mobile hard drives that reach new capacity extremes. The highlight is a one terabyte model — the industry's highest-capacity 2.5-inch drive available. Industry-leading 333 GB-per-platter technology enables the new WD Scorpio® Blue(TM) SATA 2.5-inch hard drives to offer mobile storage device and notebook users an enormous 1 TB capacity. A 750 GB WD Scorpio Blue model also will be available.

The WD Scorpio Blue 750 GB and 1 TB hard drives have a 12.5 mm form factor(1) and are ideally suited for use in portable storage solutions, such as the newly released My Passport(TM) Essential(TM) SE Portable USB Drives. Other applications include select notebooks and small form factor desktop PCs, where quiet and cool operation are important. Both WD Scorpio Blue drives deliver high-performance with a 3 gigabits per second (Gb/s) transfer rate.

"The convergence of the growing mobile computing and digital media trends produces demand for desktop-like capacities in portable devices," said Jim Morris, senior vice president and general manager of client systems at WD. "Our new WD Scorpio Blue drives enable people to take even more of their digital collections with them wherever they go and, realizing the value of their data, back up their notebooks on their My Passport drives."

WD Scorpio Blue hard drives offer high-performance, low power consumption and cool operation in portable applications. They are designed with WD features to be reliable and shock resistant while also delivering industry-leading capacity and performance.

WD Scorpio Blue Features

WhisperDrive(TM) - WD's exclusive WhisperDrive technology combines state-of-the-art seeking algorithms to produce one of the quietest 2.5-inch drives available.

ShockGuard(TM) - Leading-edge ShockGuard technology combines firmware and hardware advancements to meet the highest combined shock tolerance specifications required for mobile and notebook applications.

SecurePark(TM) - Parks the recording heads off the disk surface during spin up, spin down and when the drive is off. This ensures the recording head never touches the disk surface, resulting in improved long-term reliability due to less head wear and improved shock tolerance.

Price and Availability

WD Scorpio Blue 750 GB drives (model WD7500KEVT) are available now through select distributors and resellers; the 1 TB capacity (model WD10TEVT) is available now configured into My Passport Essential SE USB drives. The manufacturer's suggested retail price (MSRP) for the WD Scorpio Blue 1 TB drive is $249.99 USD and for the 750 GB version it is $189.99 USD. WD Scorpio Blue hard drives are covered by a three-year limited warranty.

The Price: $700 (4TB), $400 (2TB)

The Verdict: It's a NAS for normal people. With a simple curved white design highlighted by a single hypnotic bar of white LED, the diminutive My Book plugs in to your router via ethernet to give you up to 4TB of networked storage. You plug it in, it shows up on your network, and that's that. (There's a more advanced CD installation that allows you to auto-backup your PC hard drive should you want the software.)
We tested the large, 4TB RAID 1 (mirrored drive) version of the My Book. In other words, you have about 2TB of recordable space that's backed up to another drive so that if one drive fails, you don't lose any data. If you wanted more speed/space, the drive can be reconfigured to RAID 0 (Striped) mode allowing you to access all 4TB. And it's easy to forget, if you choose to mainline the My Book right into your computer's ethernet jack, transfer speeds are fast. Gigabit ethernet reaches 1000Mbps, which is easily faster than USB but also quicker on paper than even Firewire 800. Still, transferring a 700MB file took 1:32. Transferring 8.2GB in files took 18:49. Not so fast in practice. (In other words, you won't actually be copying files at 1000Mbps, but the installed system has no trouble streaming HD media over Wi-Fi.)

You feel a bit of warmth dissipating out of the My Book's large top to rear vent panel (that we wish were metal instal of plastic), but system runs cool enough, offers easy access to the drives (you just pop the lid) and operates with very little noise. Quite simply, it works pretty well and makes a cute little media server (if you've got the scratch).

It's As Simple as RAIDs Get

Small, Quiet Formfactor

Mega Storage

Venting Could Feel More Durable, But It's Flexible and Thereby Easy to Pop Off

The My Books can connect either as an NAS through ethernet or simply as an external drive through USB, and both the 2TB and 4TB versions contain two drives to watch each other's backs in case one fails. So really, you're getting either 1TB or 2TB of space, respectively, since one drive is used as backup. They're available now and retail for either $400 (2TB) or $700 (4TB). Press release to follow. [Western Digital]

WD'S NEW DUAL-DRIVE MY BOOK® WORLD EDITION™ II NETWORK STORAGE SYSTEM ADDS EXTRA LEVEL OF PROTECTION
FOR A FAMILY'S VALUABLE DATA

Offers an Easy, Double-Safe Way to Backup Computers and Share Media
Throughout the Home

LAKE FOREST, Calif. - June 24, 2009 - WD® (NYSE: WDC), the world's leader in external storage solutions, today introduced its newly redesigned My Book® World Edition™ II dual- drive network storage system in capacities of up to 4 TB. With the double protection of two Mirrored (RAID 1) drives and continuous backup software, the My Book World Edition II network storage system provides an extra-safe place for users to back up and store the data and digital media from all the computers on their network in one central location. Available now at select retailers and the WD online store, the new dual-drive systems join the recently introduced (Feb. 2009) My Book World Edition and are compatible with PC and Mac® computers.

According to a July 2008 report by research firm Parks Associates, the number of households worldwide with data networks will grow from around 170 million in 2008 to 240 million by year-end 2012. The firm also reports that the average broadband household will see its digital media storage needs grow to nearly 900 GB by year-end 2012. In addition, consumers indicate that the most important feature for a network-attached storage (NAS) device is the amount of available storage. With its massive 4 TB capacity, the My Book World Edition II network storage system will serve this rapidly growing need for home data storage.

The My Book World Edition II network storage system uses RAID 1 (Mirrored1) technology to automatically and continuously maintain a second copy of user's data. If one drive in the two-drive system ever fails, the system continues to run and the data is safe. In addition, the new
My Book World Edition II network hard drive includes software that simplifies the task of setting up automatic and continuous data backup for all the PCs in the home. The My Book World Edition II storage systems ship in Mirrored mode and use half the capacity for file redundancy.

With its media server capabilities and fast transfer speeds, this high-capacity system makes it simple to build a centralized digital media library that everyone can easily share. Music, photos and videos can be streamed directly from the My Book World Edition II storage system to any PC, Mac or connected DLNA® media player (such as TVs, Microsoft® Xbox 360 and Sony® PlayStation®3 game consoles or wireless digital pictures frames) using the integrated UPnP (Universal Plug and Play) media server and iTunes® Music server software. Users can also securely access their files from anywhere in the world through the Internet using the free MioNet® remote access service included with every My Book World Edition II storage system.

"Families have more and more digital media like movies, photos and music to store, share and protect. Having two drives inside the My Book World Edition II network storage system, instantaneously and automatically duplicating data, offers consumers the peace of mind of double safe, real-time protection of their valuable content," said Dale Pistilli, vice president of marketing for WD's branded products group. "Families can relax knowing their valuable media is backed up while enjoying the ability to stream their content to a plethora of different devices from PCs and Macs to PS3s, Xbox 360s and the latest connected TVs."

Price and Availability

The new My Book World Edition II network storage systems are available now in 2 TB and 4 TB capacities at select retailers and WD's online store (www.shopwd.com). MSRP for the My Book World Edition II dual-drive storage system with 4 TB is $699.99 USD and 2 TB is $399.99 USD.

Am I pissed off? Yes, because Seagate just sent over this beautiful, whisper-quiet 1TB eSATA drive that's compatible with quite a few cable-co DVRs. Well, I don't want to test it with my crappy Motorola DVR, I want to test it with my TiVo HD, which, with a tiny built-in 160GB drive, is in dire need of extra space. I guess you could say I'm mad because I love TiVo. Oh TiVo, why did you have to go and complicate our beautiful relationship?

All I get on screen is a message saying the drive is "unsupported," despite it being a relatively generic eSATA configuration designed for CE products, currently supported by DVRs from Scientific Atlanta, Motorola, DirecTV and Dish, and even runs, though technically unsupported, on the original TiVo Series3. I followed up and TiVo said this:

Western Digital has gone through our testing and certification process. We know it will work 100% of the time, something we cannot guarantee with other expanders.

The irony there is that when I did have a WD drive on a TiVo about a year ago, it actually malfunctioned once and I had to reset it, losing TV shows in the process. I pressed TiVo for a list of other companies it was testing. Turns out, there isn't one. This is all I could get:

The class of Western Digital drive in the DVR expander is designed specifically for 24/7 use in a CE device. It is optimized for constant read/write cycles and is designed to last much longer when used in a DVR application. Un-optimized or unknown drives add risk to system stability and would reduce expected lifetime.

I have to say, this logic only works when we're talking about drives intended for something other than DVRs, or drives from companies that do not have a reputation as a great hard drive maker, as Seagate does. The question is, why did TiVo stop testing CE eSATA drives after falling in love with WD's? I can only think of two reasons, sheer laziness or cash money dolla dolla bills, and of course, I'm not going to get a confirmation of either.

I have absolutely nothing against WD (even though that one did fail in my TiVo back in 2008). I like a lot of their products. I just can't believe that there's any merit to this exclusive partnership. When I buy an electronic toothbrush from Braun or Philips, am I restricted to using a particular kind of toothpaste? No. The understanding is that I will use toothpaste, but not what kind. Ditto here. There's an eSATA port, so the understanding is that I will use it. But, within reason, the brand choice should be up to me.

I will continue talking to both companies about this issue, because I feel strongly that the ban on Seagate drives be lifted here, especially for a totally legitimate means of adding extremely necessary additional storage. All this does is promote hackery. Speaking of which, anybody got any good tips for hacking a Seagate DVR expander onto my otherwise awesome TiVo HD? [Seagate Product Page]

By using a 2TB disk instead of, say, two 1TB disks, the drives take up less space on your desk and are generally simpler (one instead of two). These will hit the My Book Studio, My Book Mac, My Book Home and My Book Essential editions of Western Digital's lineup.

My Book Studio Edition & My Book Mac Edition
Formatted[1] for Mac computers, these drives are an ideal solution for creative professionals and video editors. The My Book Studio Edition is equipped with high speed FireWire® 400/800 and eSATA interfaces as well as the popular USB 2.0 interface and a 5-year limited warranty. My Book Mac Edition external drives feature a USB 2.0 interface and a 1-year limited warranty.

My Book Home Edition
Equipped with continuous backup software and high-speed eSATA and FireWire 400 as well as USB 2.0 interfaces, My Book Home Edition carries a 3-year limited warranty. My Book Home Edition is designed for PC users that need an effortless way to preserve digital pictures.

My Book Essential Edition
My Book Essential Edition offers an easy way to add storage capacity to home or office computers. The drives are equipped with a USB 2.0 interface that provides convenience and compatibility among multiple computers.
The entire family of My Book external hard drives features:
- New 2 TB capacities allowing users to store and backup all their data in one central location;
- Elegant, small footprint design;
- Capacity gauge to see at a glance how much capacity is available on the drive (not available on the My Book Essential Edition drive);
- Environmentally friendly design that saves power by going into standby mode after 10 minutes of inactivity;
- SmartPower™ features that turns the drive on and off with the computer and Safe Shutdown™ that prevents the drive from being powered down until all the data has been written[2];
- Kensington® Security Slot that allows users to secure drive to their desk with the separate purchase of a Kensington lock kit; and,
- 1-year limited warranty.

They're all available now between $330 and $380.

The Price: $699 for 2TB, $999 for 4TB (tested)

Verdict It's a cubular vault of 4TB of basically enterprise-class networked storage that sits on your desk and feels like it could stop a round from the world's deadliest carbine—what's not to like?

It's basically impossible to test actual drive reliability in the short span of review time (though everyone has their own opinion about which companies they love or loathe), so really what it comes down to here is ease of installation—which WD is touting heavily, so you won't need an IT geek—and features.

Western Digital's software walks you through most of the setup, though I still had to manually map the network drives in Vista, and Bonjour didn't automatically pick it up on my roommate's Mac. More frustrating is that despite having a gigabit router and using gigabit cables, I did not see gigabit speeds out of the box—or at all, with transfer speeds hovering around 10.5MB/s writing and 12MB/s pulling data. The default RAID5 configuration in the 4TB model (which balances redundancy against eating whole hard drives, leaving you with 2.66TB actually free) is noted for its relatively poor write performance compared to RAID1, and you'd be better off performance-wise with the latter if you're planning on doing a lot of write-intensive stuff, but that still doesn't explain the gap here.

It also comes with their automatic backup and remote access programs, Anywhere Backup and Mionet, though they annoyingly only give you three licenses for the latter, so if you've got four computers you want to continuously back up, you'll have to get another license. But whatever, the best feature is the built-in iTunes music server, which worked flawlessly. Dump a whole bunch of music into the shared music folder and it automatically shows up as a networked source in iTunes and showed up like magic on my PC and roommate's Mac.

Another (small) aggravation is that it's not hot swappable, so if you want to pop out one of the drives and maybe drop in a 1.5TB drive, you have to power the whole thing down. But I can almost forgive that since three USB ports let you plug other external drives into the box to expand storage even further.

While it's definitely overkill for average home usage, if you're that serious about centralized storage (like if you're if prosumer photographer) or you know, actually running a small business, despite its handful of flaws, if you've got the cash, it's definitely worth looking at. [Western Digital]

Gawker Media polls require Javascript; if you're viewing this in an RSS reader, click through to view in your Javascript-enabled web browser.

Update: By now, most of you have figured out that Iomega and LaCie only make the housings, so if the drive itself fails, you have to unscrew the box to see who the real culprit is. Also, anyone voting for IBM can just vote for Hitachi, which bought the whole IBM storage division a number of years ago.

I will say that, after reading the comments, I feel bad that I didn't divide Seagate and Maxtor, but then again, there is only one company to blame now—let's just hope they're not merging all of their manufacturing!!! My guess is that Maxtor may have ended up the biggest loser, at least proportionately, and Seagate, solo, would have looked a lot better than WD.

As for those of you who complain that this poll is not scientific, you are TOTALLY RIGHT!!! It's not scientific. Go back to your Science and your Nature for the raw research, cuz over here we're talking about life experiences.

I said "void the warranty" and I meant it. The process I went through today means it'll be harder for me to complain to Apple if things get weird, so be cautious! Given the experience I've had, I think it will get easier and easier to swap HDDs, like RAM, because on the software side, at least as far as Apple goes, installing a fresh 2.5" SATA turns out to be straightforward, and ready for novices.

The key here is that there's no preparation needed for the new drive. As long as you've backed up your old drive to an external disk using Time Machine, you can prepare for the grand opening. I won't bore you with gory details, except to say that I found a good bit of guidance from this dude's blog.
The Process
From here on in, this issue may just as well apply to MacBooks and even iMacs as well as MacBook Pros, so everyone should take note.

Once you open up the system and swap out the drives, you can set the old drive aside, hopefully never to use it again. Assuming all went well, you restart the system and insert an OS X Leopard installation DVD. You won't need the OS installer on it, but you will need it to act as mediator between the Time Machine backup drive and the newly installed blank drive. Once it boots up (you may need to manually restart to get it to work right) follow these instructions CAREFULLY:

1. Choose your language.

2. At the main screen, choose Disk Utility from the Utilities pull-down menu.

3. Select the drive itself and click on Partition.

4. In the Partition menu, select 1 Partition and Options... where you choose GUID Partition Table. Click OK then Apply, then say "yes" to whatever warning comes up.

5. Once you have reformatted the drive, close the Disk Utility window.

6. Do Not Go Forward. Instead, when you see the main Welcome screen, click the Back button, which takes you to the language select page. It sounds silly but DO IT. This shakes the system into action.

7. Once you have reselected your language and are back on the Welcome screen, click Utilities and select Restore System From Backup...

8. The process should go smoothly from that point on. You simply select appropriate disks to copy your chosen backup data from your Time Machine drive to the new internal drive, as shown in the following sequence:

The Back Story
Originally I tried my swap without first clicking back to the language page, and the installer could not find my new hard drive. Disk Utility saw it and happily formatted it with the GUID partition, but even on the second pass, the installer wouldn't show it as a target option. All I got was this hollow emptiness:
I spoke with Jeerun Chan at Western Digital and asked him to try the same process, which yielded the same results. Then I tried it with another virginal hard drive, this time a 160GB SATA from Seagate. Between the two of us, we ran this test on three different configurations, with the same negative results.

The obvious but depressing solution was to just run the Leopard system installer, then use the migration tool to back up from my Time Machine drive. It's fairly smooth, and smart if you want a clean install on your new drive, but it's boring: it takes a few steps, and they're all obvious. I wanted a bit-for-bit dump from backup to new drive, fully automatic.

As I was installing Leopard on my second drive, the phone rang: it was Jeerun with the crazy back-button technique. I don't know how he thought to do it—I don't even think he knows, but the fact remains: when you have formatted your destination drive and are on the Welcome screen, click the back button and the process will work. If you don't click it, well, in our experience, it seems you will fail in your objective.

Obviously, this won't work if you don't regularly do a full system backup in Time Machine. If the omitted folders in your Time Machine options include system files, you won't be able to do this.

In truth, it might make sense to backup only personal files, especially since this process requires a Leopard install disk even to write the whole image back onto the new drive. Chen swears by SuperDuper, which is perhaps a better pro technique, one that doesn't require a system-install DVD. Still, I wanted to see if this major boast of Time Machine was all that it was cracked up to be. It is, and the end result will be tasty, as long as you don't forget that one little catch.

As with my last Time Machine HDD discovery, this one involves a little hocus pocus. While this method works, you may have your own trick, or a more scientific approach. If so, please share it in the comments below, and spare any fellow Mac users a frustrating afternoon.

Thanks to Jeerun and Heather at WD!