Seagate's SD1A firmware update, meant to fix problems with its Barracuda 7200.11 models, only managed to make things worse—bricking the drives of those who bothered to install it. They've pulled the update pending validation.
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Barracuda owners who flashed their disks with the firmware found that after they rebooted, they'd receive a system disk failure error message. Backups, if they were stored on the same drive that was flashed, also became unavailable.
If you have a Barracuda hard drive, best follow this forum thread to keep updated on news from Seagate. Hopefully, the next "fix" they release isn't such a mess. [Slashdot]