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> IDE Drive recognition
pavon
post Jun 29 2008, 04:38 AM
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I am in the process of wiping some old IDE drives before taking them to be recycled/disposed, using the `shred /dev/sda' command. Right after I started one of them I had a power outage (caused by clumsy foot). Now my BIOS won't auto-recognize the drive (presumably because the drive info has been overwritten). When I manually specify the drive geometry in the BIOS it gives me a "Harddisk Diagnostic Failure". In both cases Linux does not detect the drive. I've also tried specifying the drive geometry in the boot options (sda=790,15,57) with no luck (is this even used anymore in 2.6?). I'm using C,H,S values penned onto the drive - not sure if they are what was actually being auto-detected before, but the total size is correct.

I'd really like to finish wiping this drive before I get rid of it. Any ideas on how I can force linux to see the drive, or how to get the BIOS to accept it?

In case it is usefull, the system I am using to do this is an AMD K6-2 with an AWARD BIOS, booting the System Rescue CD (normal 32 bit linux rescuecd, not one of the other boot images).
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michaelk
post Jun 29 2008, 11:27 AM
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Even though you probably deleted the partition table the BIOS should still be able to recognize the drive via the automatic setting AFAIK.
The drive settings are saved in nonvolatile memory on the drive. The abrupt power removal could of damaged the drive.

The only other problem I see would be if the drive capacity was > then the BIOS size limitation i.e. 8GB, 32GB, 127GB etc and the translation software
is in the MBR which is not erased. I would not expect a hardware drive error but it has been a long to since I have messed with this.

If this is really the case then shred the partition and not the entire drive ie. sda1 vs sda.

http://www.win.tue.nl/~aeb/linux/Large-Disk-11.html
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