OS X 10.5.6 install failed - combo update refuses to install

[kolax]

I'm installing 10.5.6 on the family MacBook (white) and it was running 10.5.4 previously, yet hanged when I was updating everything (there was a few updates) so I had to force power off.

The Mac says it is running 10.5.6, but I wanted to apply the combo update to be safe. However, it fails when installing (it doesn't get to the stage where it reboots, still in OS X at this stage). It says "The installer could not install some files in "/".

Also, repairing Disk Permissions failed too.

Prior to the update, everything was working fine - I'm usually full of ideas, but when it is your Mac that is playing up I'm very keen to hear what others have to say.

 

[GGJstudios]

https://forums.macrumors.com/threads/619308/

 

[kolax]

Yeah none of those help me. The MacBook boots up into OS X, it doesn't hang on boot like the others were having problems with. I'm worried about the disk - I'll try repairing the disk once I've backed up.

EDIT: I've backed up the disk now and verified the disk and it appears OK. However, the OS X directory isn't (repairing permissions gives me "the underlying task reported failure on exit").

Urgh, I don't have much time to fix this, I need a quick fix to repair the directory so I can install the combo update again.