External Hard Drive Shows Unallocated in Disk Management, Using TestDisk to Recover
Posted on 2010-01-08
My two home PC's (Win XP) recently stopped booting (probably a virus). That's not the topic of this question (separate question already out there #25019929) but it's probably important background. My first step of recovering those hard drives is to try to recover data, which I planned to do with my external hard drive (model WD2500032). But it isn't recognized by any of the Linux bootup programs (KNOPPIX) that I'm running from CD on my broken computer, or even my work computer (which works fine - what I'm using now). When connected to my work computer, it shows up in Device Manager, but has no drive assigned in Windows. I tried rebooting with it connected (USB) - no change. In disk management it shows as "Unallocated." I ran the Western Digital Data LifeGuard Diagnostics and did a full scan, which came back all okay (SMART Staus = PASS). I called Western Digital and they said if LifeGuard could have repaired anything, it would have done it automatically and otherwise they have no tools. I've seen suggestions to use testdisk so I downloaded and ran that. This is where I'm getting stuck -- I don't want to do anything to the disk to over-write my files. I selected Analysis and it says "Structure OK" -- I selected "Deeper Analysis" and it comes back with the following screen:
Disk /dev/sdb - 250 GB / 232 GiB - CHS 30401 255 63
Partition Start End Size in sectors
* FAT32 LBA 0 1 1 30400 254 63 488392002 [My Book]
Then is says what functions the arrow keys provide, and says I can use the Left/Right keys to CHANGE partition characteristics: *=Primary bootabl P=primary L=Logical E=Extended D=Deleted. However, when I press those keys it toggles only between *, P, and D.
What should I do next? Thanks to whoever can help me use TestDisk to recovery my data and, if possible, get the hard-drive back in working order.