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Macintosh HD won't repair, won't mount, won't boot. Any suggestions for saving data?

I'm in a spot of difficulty with my MacBook Pro running Snow Leopard. It was working fine until this morning, but now seems to be completely damaged:


- MBP wouldn't start up (spinning cog never loading at start).

- I booted from Snow Leopard Installer Disk. I went into Disk Utility and tried to verify my HD:

- Macintosh HD can not be verified ('Invalid node structure'). It suggests clicking 'repair disk':

- Repair disk won't work. It suggests I back up and reformat.

- 'Macintosh HD' now appears grey in the left side bar and cannot be mounted (even by using prompts in Terminal).

- When I go to 'Startup Disk' under Utilities, it cannot locate Macintosh HD.


Given that I cannot mount or boot from the disk, does anyone have any suggestions on how I can retrieve my data? Perhaps booting from an external drive and then running 'Data Rescure' or similar on the corrupted HD?


If I manage to rescue my data, I'll then reformat the HD. But given it can't be mounted, I'm not entirely sure I will be able to.


Thanks very much in advance for any assistance.

MacBook Pro, Mac OS X (10.6.3)

Posted on Nov 5, 2012 6:47 AM

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8 replies

Nov 5, 2012 6:57 AM in response to brgm

Generally means your disk has failed. DiskWarrior or similar is your only hope of recovering data. However, if your drive has failed, other than a data recovery service, there is no way to recover your data. I can't guarantee that DiskWarrier or similar will work. If you have an Apple store nearby, make an appointment. I think your first step is to verify whether your disk has failed or the file structure is hosed. If the later, DiskWarrior may work. If the former, your data is gone unless you want to send the disk off to a data recovery service, which will cost big bucks.


If you maintained two current backups, the fix would be easy, so start doing so.

Nov 5, 2012 7:55 AM in response to brgm

Apple Support have a good doc on resolving start-up issues. Clearly you've tried some, but if any have been missed from their check list (e.g. trying fsck) may be worth attempting.


http://support.apple.com/kb/TS1417


DiskWarrior is worth a try if you actually have it, but if you are located near an Apple Store or Apple authorized service they would be good places to go for hands on advice and help, though if the Mac is out of warranty then charges may apply to any service done to resolve problem.

Oct 14, 2013 8:12 PM in response to brgm

I was having the same trouble for a week.


I have a Mid 2011 27inch iMac. The hard drive died and I tried fixing it using disk utility by starting up the computer pressing down the Option button. Nothing worked. It said the HD was damaged.


I went to Apple and I asked and they said that there was nothing that could be done. That there are hard drive retrival services but that costs upwards of 800 dollars. What I did instead was buy a Thunderbolt cable. Connected my iMac to my Mac air and started up my iMac holding down the T key.


This turned by iMac into a gigantic hard drive. I then went to the Finder on my Air and my damaged hard drive from the iMac showed up and I was just able to then drag and drop the important files I didn't want to lose into an external hard drive.


I hope that helps.

Macintosh HD won't repair, won't mount, won't boot. Any suggestions for saving data?

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