Apple has released updates for Mac OS X Snow Leopard, namely 10.6.4. It has operating system bug fixes, which improves the compatibility, security, and stability of Mac computer. However, in some cases it may also affect the working of your system. Your system may not work properly and sometimes the Time Machine backup volume gets locked. In such cases, you can not restore backup and come across critical data loss situations if your system fails. At this point, you need to opt for Mac recovery solutions to get your mission-critical data back.
In a practical scenario, the fsck utility works for a long time upon rebooting your system after installing the updates. After you stop the fsck process, your Time Machine backup volume gets locked. If you run Disk Utility to unlock the volume, it shows that the volume has no errors. The “chflags nouchg”, a terminal command helps you to unlock the volume Mac volume, command does not help you unlock the volume.
When you start your Mac OS X computer, the backup volume appears with the padlock image on TM backup volume icon indicating the you cannot access it.
At this point, the Time Machine backup cannot be accessed. If you have formatted your Mac OS X hard drive and can not access the Time Machine backup volume, serious data loss situations occur. This behavior can be caused by any of the following reasons:
The backup was created using an earlier version and Mac OS X 10.6.4 can not read it.
The Mac OS X preferences are either corrupt or damaged.
File system conflicts.
You can try out the below methods to sort out this problem and perform data recovery Mac :
Repair Mac OS X preferences using Disk Utility.
Enter the below command in Terminal:
sudo chflags nouchg /Volumes/"TM drive name"
sudo chmod 775 /Volumes/"TM drive name"
If none of the above methods work, you need to scan your formatted Mac OS X 10.6.4 Snow Leopard hard drive using powerful Mac data recovery applications and retrieve lost data from it.
The Mac disk recovery software use advanced scanning methods to scan the drive and recover all your valuable data from it. They are incorporated with self-descriptive and interactive user interface to offer easy recovery. Such tools preserve absolute integrity of your valuable data due to read-only and non-destructive conduct.
Stellar Phoenix Macintosh Data Recovery recovers lost, missing, deleted, and inaccessible your mission-critical data in all data loss scenarios. The software retrieves Mac data from HFS, HFS+, HFSX, HFS Wrapper, and FAT file system volumes of Mac OS X 10.6 Snow Leopard, 10.5 Leopard, 10.4 Tiger, and 10.3.9 Panther.
Mac Snow Leopard Update Locks Time Machine Backup