Recover large disk image that is corrupted

twmsdude · April 29, 2008

Hey folks. I have a really annoying problem right now. When I initially installed 10.4.8, i partitioned the drive to have 2 split partitions. The idea at the time was to dual boot xp/osx. Well I ended up liking the way osx was running, so i decided to scratch the idea of dual booting. At that time i already had all my stuff setup and was looking for a way to resize the drive. But due to the fdisk partition scheme that was used, this was impossible.

So last night I backed my my entire partition to a disk image on a different partition. I got home from school today and popped in the kismus hackintosh tools dvd to do the following, this being my idea of it:

1. Erase main drive and make it 1 partition with the same drive label, "Mac OS X Tiger"

2. Mount the disk image and copy all the contents back to the main drive

3. Reboot and everything would be hunky dory.

Well that didn't happen. I went into disk utility to restore from image, and it said it had to "scan for backup" or something. So i let it do it's thing, ended up taking too long for my patience, then clicking cancel. My hypothesis is that when I hit cancel in the middle of "reordering" it {censored}ed up my 88gb dmg file. This is a compressed file from the original 110gb's or so from the old main drive.

I have tried to mount it in leopard, tiger, and the boot cd with no luck. I have also tried diskwarrior, and it just crashes upon me telling it to recover, great. I downloaded the demo of diskrescue 2 and it has not option to open from a disk image.

Le Verdict:

The disk image will NOT mount, even using the terminal command of hddutil. Disk image mounter.app says that the image is corrupted and cannot be mounted.

Please help me recover this thing, or at least find a way to extract the contents.

vaporATX · April 29, 2008

Run Diskwarrior on the image and see if it can fix it.

Note: Will take a long time, so don't get impatient and cancel it again.

twmsdude · April 29, 2008

Thanks for the reply vapor. I think i'll run it overnight and see if it works. The reason i'm canceling it is because it's crashing. I'll look up the error in console when I get home tonight.

vaporATX · April 29, 2008

Be sure to try Disk Warrior. It can work miracles and there is even a patch for it to make it compatible with hack Macs.

http://forum.insanelymac.com/index.php?sho...mp;#entry718050

twmsdude · April 29, 2008

Hi vapor. I downloaded the patcher and it installed fine. I am however getting the same error in console. it's saying that the operation is not permitted. The application is still running as we speak. It is also coming up as "not responding" in activity manager.

4/29/08 5:18:53 PM [0x0-0x1e01e].com.alsoft.diskwarrior[204] DiskWarriorRebuildServer: Error 1 executing '/usr/bin/hdiutil',

4/29/08 5:18:53 PM [0x0-0x1e01e].com.alsoft.diskwarrior[204] Initializing…

4/29/08 5:18:53 PM [0x0-0x1e01e].com.alsoft.diskwarrior[204] DIBackingStoreInstantiatorProbe: interface 0, score [32m 100[0m, CBSDBackingStore

4/29/08 5:18:53 PM [0x0-0x1e01e].com.alsoft.diskwarrior[204] DIBackingStoreInstantiatorProbe: interface 1, score [31m -1000[0m, CBundleBackingStore

4/29/08 5:18:53 PM [0x0-0x1e01e].com.alsoft.diskwarrior[204] DIBackingStoreInstantiatorProbe: interface 2, score [31m -1000[0m, CRAMBackingStore

4/29/08 5:18:53 PM [0x0-0x1e01e].com.alsoft.diskwarrior[204] DIBackingStoreInstantiatorProbe: interface 3, score [32m 100[0m, CCarbonBackingStore

4/29/08 5:18:53 PM [0x0-0x1e01e].com.alsoft.diskwarrior[204] DIBackingStoreInstantiatorProbe: interface 4, score [31m -1000[0m, CDevBackingStore

4/29/08 5:18:53 PM [0x0-0x1e01e].com.alsoft.diskwarrior[204] DIBackingStoreInstantiatorProbe: interface 5, score [31m -1000[0m, CCURLBackingStore

4/29/08 5:18:53 PM [0x0-0x1e01e].com.alsoft.diskwarrior[204] DIBackingStoreInstantiatorProbe: interface 6, score [31m -1000[0m, CVectoredBackingStore

4/29/08 5:18:53 PM [0x0-0x1e01e].com.alsoft.diskwarrior[204] DIBackingStoreInstantiatorProbe: selecting CBSDBackingStore