After I ran TechTool, my Data disk has gone, it shoed up below when check under Disk Utility. How could I deal with that ?
Thanks a lot ... ^-^
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Verify and Repair disk “Data”
Checking HFS Plus volume.
Invalid B-tree node size
Volume check failed.
Error: The underlying task reported failure on exit
1 HFS volume checked
1 volume could not be repaired because of an error
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Hi Frank
There is only one utility that may be able to repair the disk with this problem;;
DiskWarrior;
http://www.alsoft.com
If that can't repair the damage, you will have to reformat the disk, which will completely erase it.
If this machine has Firewire, and you have another Mac with Firewire, you can try mounting the damaged drive on the other Mac and try saving your data, using Target Disk Mode.
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Bobw - Macosx.com Tech Support