12-08-2009, 06:33 PM
Tonight my iMac failed to boot up.
It eventually reached the two shades of blue, but no further. I tried the holding down the alt key thing and then selected the Mac HD - same result of course.
I did the same with the Boot Camp partition and XP didn't start either.
I tried again with all external disks disconnected - same result.
I booted up to the Install CD and repaired the disk. It said the disk was OK.
I tried Repairing permissions - it found errors, which it said were fixed.
However, it still would not boot up.
So I booted to the Install Disk and did the repair system reinstall (not sure of the correct name - the one that doesn't erase everything). This has been successful and now it boots up. Not tried the Bootcamp one again yet. Now backing up with Time Machine and SuperDuper! before I risk anything else.
I know it is too late now, but what is likely to have been wrong, what might have caused it and what should I have done to fix it please?
Lastly, which files can I now delete - i.e. which ones did it replace or repair? About 21GB I think, so where can I find them please?