It's a good idea to do if it hasn't been done in a while. Small side story. Work as a repair tech for Apple systems, so I keep an external drive with a bootable OS on it. One time I was going to install the update on that drive, and it kept failing. So I ran a quick repair disk operation on it, and it found some issues, probably from the times I was "bad" and pulled the drive before fully ejecting it. After that, the update installed fine.
If you run a verify disk operation, it may come back saying it can't complete. At which case you pretty much know the drive is done for.
I have a an old G4 running Mac 10.3.5 that I need to update to 10.3.9 to run a program. The machine has a long boot time so I'm worried it might die soon.
Anyways I am wondering if I should click "repair permissions" and/or "verify permissions" before I do the 10.3.9 combo update. Will this increase the chances that the 10.3.9 update will not cause problems? Or can repairing permissions itself cause trouble?
I have never repaired or verified permissions on this machine.