Greetings, Howard, I would suggest that first you do a PRAM reset, then do a open firmware reset. PRAM = Hold down the following keys, command + option + p + r Keep holding these keys until you hear the "Bong" three (3) times. Then switch to OPEN FIRMWARE = Hold down the following keys, command + option + o + f You will get a screen with a " < " prompt then enter reset-nvram then press enter Next enter set-defaults then press enter Next enter reset-all then press enter They system then will reset and then you can again enter single user mode. After entering single user enter "fsck -y" enter. If you use Applejack yhe first thing that applejack is to run t fsck -y unix command. Cheers Harry ------- Sent from Tiger's iPad On Oct 10, 2012, at 11:44 AM, Howard <pantry at hotmail.com> wrote: > Been having troubles with my PowerBook G4 running 10.4.11 being occasionally slow. I have Applejack installed and did an auto restart with all that it entails but on the first test, which I can't remember now what it is, I got a "volume failed, invalid sibling link, 4, 13235. It suggested running the test over and I did several times but no luck. Finished manually and rebooted and system seems to be working as good as usual but what is the error, how does it affect the system and how do I fix it? > > Also looking for anyone that has moved to bigger and better systems and has a spare copy of 10.5 available for free or cheap > _______________________________________________ > G4 mailing list > G4 at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/g4