I downloaded and ran the Mountain Lion Installer today for my mid-2007 iMac. After rebooting and preparing to install, I receive an error message that the hard disk was damaged and the installer could not run.
I can't boot to the partition and am working from the install partition instead. Disk Utility cannot repair the partition, and detects no problems with parent volume. Time Machine cannot restore to the partition as it is apparently locked or unavailable (it is greyed out in the program).
I've booted in Single User mode and run
/sbin/fsck -fy and
/sbin/mount -uw /, but this does not allow me to run
fsck on the problem volume - just the install partition it appears.
This is the partition info from
diskutil info /dev/disk0s2:
Device Identifier: disk0s2 Device Node: /dev/disk0s2 Part of Whole: disk0 Device / Media Name: WD Black Caviar Volume Name: WD Black Caviar Escaped with Unicode: WD%FF%FE%20%00Black%FF%FE%20%00Caviar Mounted: Yes Mount Point: /Volumes/WD Black Caviar Escaped with Unicode: /Volumes/WD%FF%FE%20%00Black%FF%FE%20%00Caviar File System Personality: HFS+ Type (Bundle): hfs Name (User Visible): Mac OS Extended Owners: Enabled Partition Type: Apple_HFS OS Can Be Installed: No Media Type: Generic Protocol: SATA SMART Status: Verified Volume UUID: 8880D8D2-AEC8-3466-81D3-4ABBE296733A Total Size: 1.3 TB (1278311751680 Bytes) (exactly 2496702640 512-Byte-Blocks) Volume Free Space: 817.2 GB (817164238848 Bytes) (exactly 1596023904 512-Byte-Blocks) Device Block Size: 512 Bytes Read-Only Media: No Read-Only Volume: Yes Ejectable: No Whole: No Internal: Yes Solid State: No
How can I regain write access to the partition to diagnose it?