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A possible fix for invalid sibling links on a hard drive
After 3 years with no problems I found I could not boot OS X 10.4.9 from my hard drive. I booted from the install CD and Disk Utility said there was a problem but could not fix it. I then tried to reinstall OS X but it would not install and kept telling to try running the installer again and again. As a last resort, I ran Terminal and used the procedure suggested which is to run "fsck_hfs -r". I was a little nervous about unmounting the drive after reading some of the other comments. The first run took about 15 mins and resulted in the a message that after 3 passes, "fsck_hfs" was unable to repair the damage. I ran it again and this time it said the damage was repaired. While still booted from the CD, I ran Disk Utility and the Hard Drive where my OS X lives was mounted. I didn't remount anything and just did a restart and everything came up as normal.
A possible fix for invalid sibling links on a hard drive
I was got the infamous 'Invalid Sibling Link' error, so decided to try this command. I unmounted the drive (in my case umount /dev/disk0s3), then I ran fsck_hfs -r /dev/disk0s3 but it said it couldn't repair it. I ran it again and again but everytime it said it couldn't repair it. I tried -f aswell, but still with no luck. I couldn't seem to mount the drive again either. I panicked.
BUT Just on the off chance though, I quit terminal and restarted the computer. I ejected the CD as soon as I could (by holding down the mouse button as the computer started up until the CD ejected). Weirdly enough, the computer loaded up and was fine!!! I have no idea how long it will last, but the main thing is that I am now able to back everything up. Once everything is backed up, I'm going to carry on as normal and hope for the best. However, if it crashes again, I think I'll erase it all and start again (reinstall) safe in the knowledge that I'll have everything backed up. |
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