5 Replies Latest reply: Jan 5, 2010 1:09 PM by baltwo
Greg Schneck Level 1 (75 points)
I had backed up an older G4 with a disk image of the boot disk. I was having severe problems so I reformatted the boot drive and started a restore (using disk utility from startup disk). The restore started fine and ran a while but then "stalled." The "progress" bar stopped and the system just kept "hitting" the Utility DVD install disk non-stop (as shown by disk access light).

Now when I try again, I immediately get a "Restore Failure - Could not validate source - error 254"

The disk image being restored is on a hard drive. I copied it to another drive and tried again with the same result.

This is being done on an old G4 Tower, dual 1 GHz PPC under 10.5.8


(This won't kill me as all my data files are also on my MBP, I just don't want to have to reinstall all my apps, setups, etc.)

G4 PPC, Mac OS X (10.5.8)
  • baltwo Level 9 (62,215 points)
    Launch Disk Utility, select the image, and scan for restore. Too late, but you should have verified you could do the restore before wiping the HD. In the future, I suggest making a bootable backup/clone and verifying it before deleting the original, then restoration is simply restoring the backup/clone.
  • Greg Schneck Level 1 (75 points)
    Yes, for my "real" machine (my Intel MBP) I have images, clones, and Time Machine Backups not to mention my data files written to DVD. I've got at least triplicate backup. This was a old machine I was setting up for a specific purpose. I'm not losing any data but I just didn't want to have to reload apps and such. But guess I have no alternative. Thanks for the tip. I had never used the "scan for restore option" before so I learned something. Usually I just trust my multiple backup method so if one source is bad, no big deal. Thanks baltwo!
  • baltwo Level 9 (62,215 points)
    Thanks for the feedback. If you're saying that scanning for restore allowed you to do the restore, then I'm glad to help. Good computing.
  • Greg Schneck Level 1 (75 points)
    No.. When I did the scan the image file showed corrupt.... But I learned something and the first think I did was to scan my two bkup image files for my MBP and they verified OK. So, learning something and learning that there is a verify function for an image file made my problem worth the while....
  • baltwo Level 9 (62,215 points)
    Thanks for clarifying. Sorry the image is corrupt. Good computing.