Yesterday I had a HDD issue on my iMac (OSX 10.5) with an 'invalid node structure' error. I eventually managed to boot into 'single user mode' and used #fsck_hfs -rf /dev/disk0s2 at the command prompt. This got OSX up and running properly again. I then repaired the permissions and the disk using the disk repair utility.
Today, I have had a complete system freeze which necesitated a cold reboot. Since then nothing has worked. I can't boot in safe mode, single user mode or verbose mode. I tried resetting the PRAM and attempted to boot from a system install disk without initial success. After about half an hour the disk icon appeared on the screen and I could boot from the install disk. I then used the terminal to try 'fsck_hfs -rf' again. This time I got the error 'Invalid B-tree node size (3,0)'. What does this mean and what do I do now?? Most forums seem to suggest using 'Disk Warrior'. Since this costs about $170 in Australia I am unlikely to take this option. Having been unemployed for more than 5 months I am more likely to attempt replacing the drive myself. However, I'd prefer to take another approach if there is one. Any suggestions?? Many Thanks
Today, I have had a complete system freeze which necesitated a cold reboot. Since then nothing has worked. I can't boot in safe mode, single user mode or verbose mode. I tried resetting the PRAM and attempted to boot from a system install disk without initial success. After about half an hour the disk icon appeared on the screen and I could boot from the install disk. I then used the terminal to try 'fsck_hfs -rf' again. This time I got the error 'Invalid B-tree node size (3,0)'. What does this mean and what do I do now?? Most forums seem to suggest using 'Disk Warrior'. Since this costs about $170 in Australia I am unlikely to take this option. Having been unemployed for more than 5 months I am more likely to attempt replacing the drive myself. However, I'd prefer to take another approach if there is one. Any suggestions?? Many Thanks