[cmrussell]

I'm hoping that someone with more experience than me can help out here. On recommendation from a macworld article on prepping for mountain lion, I ran the verify disk option in disk utility and got the following response.

Checking file system
Performing live verification.
Checking Journaled HFS Plus volume.
Checking extents overflow file.
Checking catalog file.
Checking multi-linked files.
Checking catalog hierarchy.
Checking extended attributes file.
Checking volume bitmap.
Volume bitmap needs minor repair for orphaned blocks
Checking volume information.
Invalid Volume free block count
(It should be 64261632 instead of 64254736)
The volume Macintosh HD was found corrupt and needs to be repaired.
Error: This disk needs to be repaired using the Recovery HD...hen the Mac OS X Utilities window appears, choose Disk Utility.

Can I go ahead and just use the Repair Disk button? Or should I get someone who really knows what they're doing to take a look? Thanks for the advice!

[bastion]

cmrussell, on 11 July 2012 - 05:03 PM, said:

I'm hoping that someone with more experience than me can help out here. On recommendation from a macworld article on prepping for mountain lion, I ran the verify disk option in disk utility and got the following response.

Checking file system
Performing live verification.
Checking Journaled HFS Plus volume.
Checking extents overflow file.
Checking catalog file.
Checking multi-linked files.
Checking catalog hierarchy.
Checking extended attributes file.
Checking volume bitmap.
Volume bitmap needs minor repair for orphaned blocks
Checking volume information.
Invalid Volume free block count
(It should be 64261632 instead of 64254736)
The volume Macintosh HD was found corrupt and needs to be repaired.
Error: This disk needs to be repaired using the Recovery HD...hen the Mac OS X Utilities window appears, choose Disk Utility.

Can I go ahead and just use the Repair Disk button? Or should I get someone who really knows what they're doing to take a look? Thanks for the advice!

Go ahead with the repair disk option, but you'll need to be booted from a different volume. You can't repair the current boot volume.

[EGM]

If you have a full disk image backup on another drive, you can boot from that. The easiest way to make that happen is to go into your Startup Disk preferences, select the backup, and click Restart. Then the internal drive will be the system's second drive, and you can repair it. After you do, go back to Startup Disk preferences, select the internal drive, and restart.

[bastion]

EGM, on 12 July 2012 - 04:42 AM, said:

If you have a full disk image backup on another drive, you can boot from that. The easiest way to make that happen is to go into your Startup Disk preferences, select the backup, and click Restart. Then the internal drive will be the system's second drive, and you can repair it. After you do, go back to Startup Disk preferences, select the internal drive, and restart.

If you don't have a bootable backup, a standard install of Lion should have put a recovery partition on the drive that includes a copy of Disk Utility. That's accessed by holding down Cmd-R while booting. But (OP) the implicit message from me and, I think, EGM is that you *should* have a backup, bootable or otherwise. I wouldn't proceed without one.

This post has been edited by bastion: 12 July 2012 - 05:16 AM