iMac cant get past startup screen
-Boot iMac
-Grey background and apple logo comes up
-Loading bar appears at bottom part of screen. Loads about 10% and then it disappears.
-Another loading bar appears at the same spot. Same thing happens.
-Wheely thing starts turning.
-Stuck there.
I've tried:
1) Disk Utility: it couldn't verify my Mac HD.
2) /sbin/fsck -fy: the following text appears:
** /dev/rdisk0s2
** Root file system
Executing fsck_hfs (version diskdev_cmds-491~1)
** Checking Journaled HFS Plus volume
** Checking extents overflow file
** Checking catalog file.
Invalid key length
(4, 39104)
** The volume Macintosh HD could not be verified completely.
/dev/rdisk0s2 (hfs) EXITED WITH SIGNAL 8
3) I've tried switching my RAM around as well.. I upgraded from 2 to 4gb. Same problems with old and new RAM.
So there's something wrong with my HD...What can be done to fix it?
Please help
Thanks!
iMac (Early 2008), Mac OS X (10.6.2)