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Time Machine Backup is Locked and Inaccessible After Reinstalling Mac OS

Does your Mac Pro not booting properly due to corrupt catalog tree? Are you unable to fix the problem using any disk repair tool like Disk Utility? This is a critical situation, which renders your Mac Pro machine unbootable and all your critical data inaccessible. The only option that you have to fix this problem is- Erase and Install installation of your Mac OS X operating system. However, it deletes all the partitions and data from hard drive, leading to severe data loss. In such cases, Mac File Recovery becomes essential, if you do not have an updated backup of all your data on Mac hard drive.

When this problem occurs, you may not get any error message. The system just quits every time you try to boot it up. After you perform ‘Erase and Install’ installation of Mac OS X operating system, you need to recover your precious data from the most recent backup. The restore process goes smoothly in most of the cases.

However, sometimes the Mac applications may not work properly when you reboot the system after restoring data from backup. The Time Machine backup shows “Finishing Backup” message in a continuous cycle, but does not do anything. Here, you may notice that the drive that you have designated for TM backup is not showing Time Machine backup now. It shows like a simple hard drive icon with little lock on it, which means the drive is locked.

When you go to the “Get Info” window, you see that you have only custom access in place of read/write access. When you try to fix the problem using Disk Utility, you get “Write Permission” errors.


This problem generally occurs if you have corrupt permission on the Time Machine volume or it is locked. The problem may occur due to various reasons, ranging from user errors to file system corruption.


You can try fixing this behavior using any of the below methods:

  • Repair disk permissions using Disk Utility.
  • Unlock the drive using Terminal.
  • When all else fails, use Mac Drive Rcovery software to recover lost data.

The Mac Data Recovery tools are powerful enough to thoroughly scan entire hard drive and extract all lost, missing, and inaccessible data from it. Data Recovery Mac in an easy and safe way with interactive user interface and read-only conduct.

Stellar Phoenix Macintosh Data Recovery is the most efficient utility to ensure absolute recovery in all data loss circumstances. It recovers data from HFS, HFS+, HFSX, HFS Wrapper, and FAT file system volumes. This tools is usable with Mac OS X 10.6 Snow Leopard, 10.5 Leopard, 10.4 Tiger, and 10.3.9 Panther.

Author:- The author is a Mac OS X users and doing research on Mac Data Recovery.He is also working on Mac File Recovery tools.

{ 1 comment… add one }
  • Mac Recovery

    October 28, 2010, 12:24 pm

    Great Mac data recovery solution.

    Thanks for this help.

    Would expect more from you in coming future.


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