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I'm not able to update the firmware on a Seagate ST3500620AS hard drive, neither with the Windows update tool nor the bootable CD (available on this page : These tools are unable to find the hard drive (it displays scanning SATA disk... 0 disks detected).

But this hard drive is detected by the BIOS and by Hirens Boot CD.

The reason I want to update the hard drive firmware is because it doesn't work properly. I'm unable to mount it in Windows 7, in Hiren Boot CD mini-XP it works sometime but I'm not able to make a backup of this HDD because I'm always getting errors when I'm trying to do so.

Seatools is unable to detect this hard drive.

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IS it even possible to update a harddisk firmware? – Ganesh R. Jan 23 '12 at 12:56
In some cases yes. Often with enterprise drives vendors suggest all in an array be same firmware – Dave M Jan 23 '12 at 17:10
If you cannot mount it in windows then the firmware update is likely to fail! Send it to Seagate (usually they have 3 year warranty) - let them sort it out.. If there is data on there that you need.. its most likely gone... but you can spend a few hundred dollar to get it recovered though.. tough luck mate. You should have backed up. – ppumkin Jan 23 '12 at 17:17

This may indicate an issue with the drive. Have you used the Seagate diagnostic tool to fully test the drive? Seatools can be downloaded here.

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