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Repair disk updating boot support partitions

2010-02-24 -0500: Error: This disk needs to be repaired. 2010-02-24 -0500: 2010-02-24 -0500: Disk Utility stopped verifying “Data”: This disk needs to be repaired. 2010-02-24 -0500: 2010-02-24 -0500: Verify and Repair volume “Data” 2010-02-24 -0500: Starting repair tool: 2010-02-24 -0500: Checking Journaled HFS Plus volume. 2010-02-24 -0500: Error: Disk Utility can’t repair this disk.

Back up as many of your files as possible, reformat the disk, and restore your backed-up files.

2010-02-24 -0500: 2010-02-24 -0500: Disk Utility stopped repairing “Data”: Disk Utility can’t repair this disk.

Back up as many of your files as possible, reformat the disk, and restore your backed-up files.2010-02-24 -0500: ********** Have you back up all of your data yet?

ddrescue told me that 9 MB out of 2TB could not be rescued, so I think that's pretty good.

Edit: I restored from a TM backup that wasn't the latest. It still won't boot, but I get a little further in the Repair Disk function now. Verify and Repair volume "Main" Checking Journaled HFS Plus volume. It was a problem with the i Mac's internal hard drive.

Having solved the problem I can answer my own question.

IO errors are usually VERY bad and could indicate a hardware failure - anything from bad clusters (which arn't too bad), bad cables (which are annoying) right down to gradual, complete, irrecoverable failure.

fsck_exfat: Couldn't read 131072 bytes at offset 302667137024: Input/output error "fsck_exfat: Couldn't read 131072 bytes at offset 302667137024: Input/output error" ruh ruh raggy....

991 comments

  1. IMac refuses to boot, Disk Utility always says there are drive. Updating boot support partitions for the. but I get a little further in the Repair Disk.

  2. Finally was able to boot from a different drive and ran disk utility on my main boot. at trying to repair partitions. Updating boot support partitions.

  3. Jan 27, 2011 Updating boot support partitions for the volume. boot, but the 320 cannot. Disk repair on the. completed' updating boot support partitions?

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