Currently Being ModeratedJun 19, 2013 11:37 AM (in response to Lutetia)
Backup your data again, as a clone.
Then make sure the directory is good, by booting into single user mode with a wired Apple keyboard using command-S. Type at the prompt
With a return after each line. Repeat the first line if it says it needs to make changes. If it says it can't make changes, buy Alsoft Disk Warrior and repair the directory.
Currently Being ModeratedJun 19, 2013 11:39 AM (in response to Lutetia)
You're probably fine. What OS is on the upgraded iMac?
You could always run Disk Utility to verify the HD.
If it's running Lion or Mountain Lion boot into the Recovery HD (restart holding down command + r), select Disk Utility, select Macintosh HD and click on verify disk. If any errors are found click on repair disk. Click on repair disk again until you get a clean pass then restart as normal from the Apple menu.
If the Mac is running an earlier OS, boot from the grey install/restore disk that came with the Mac - disk in drive and restart holding down the 'C' key - when the Mac boots, select your language and from the menu bar of the next screen select Utilities>Disk Utility and follow the verify/repair process as above.
Currently Being ModeratedJun 19, 2013 11:49 AM (in response to Lutetia)
Have you got the grey disk that came with the Mac (there should be two of them - you need disk 1) . You should be able to boot from that as I described in my first post, or you could follow a brody's advice.
Currently Being ModeratedJun 19, 2013 11:50 AM (in response to Lutetia)
command-R does not work with 10.6.8. But a 10.6 installer disc that came with the machine if one did, or a retail 10.6 installer with a Snow Leopard logo might work, if your machine came with 10.5.8 or earlier. Boot with the Option key, select the language in the installer, and you'll find the Utilities menu there to do the Disk Utility as suggested. Or you can use the fsck suggestion I gave. Both are the same program.
Currently Being ModeratedJun 19, 2013 12:02 PM (in response to a brody)
Here are the results:
In response to /sbin/fsck -fy:
"The volume Macintosh HD appears to be OK"
In response to /sbin/mount -uw:
"root_device on / (hfs, local, read-only, journaled) devfs on /dev (devfs, local, nobrowse)"
Does this mean everything is fine?