I updated software on old G4 and now it will not start or reboot from disks. It was all good until I updated software. Same model as Any ideas? Chris PS I h

I wish I could say, X. something I would hazard a guess at X.7.5 which is what my current machine runs but I could not say for certain.

When I turn the machine on it chimes then starts with a grey screen and apple symbol. From there I get the spinning grey wheel and it hangs from then on. I left it for a hour to no avail. I tried inserting a variety of original OS disks, holding down the C key to see if I could boot from those and the result was the same. I suspect the operating system I updated too is not compatible with the older processors.

The computer had been dormant for some time but when I restarted it, all was fine. It connected to the wifi and I received an update window which I proceeded to do. Thanks for the tip of starting in single user mode, however I had forgotten Applejack installed so when I hold Command S Applejack begins. I typed applejack AUTO restart and it ran through its series of fixes but on restarting I am back to the grey screen and wheel. I tried a few OS disks but am still getting no further than the grey screen.

Apparently not. Just more grey screen. I ran AJ again but still nothing and then tried booting from a Diskwarrier CD. Still nothing. Seems like a meltdown although can hear the HD searching away when I

put disks in.

I've tried every Mac install disk too from Tiger to Snow Leopard. It nay just be a door stop now!

Thanks for your help though.

I have the solid gray disks x 3 (Install Disks 1 and 2) plus a software install and restore disk.

I also have the black disks with a big X - OSX.3 Panther disks x 3

A single Leopard disk X.5.1and a single Snow Leopard disk x.6.3.

HI,

These are all the disks I have, some may have come from my Power Mac.

Grey Disc

OSX Install Disc 1 - Mac Os Version 10.4.10, AHT Version 3A133, 2Z691-6089-A

OSX Install Disc 2 - A 2Z691-6113-A

OSX Software Install and Restore Disc - Mac Os Version 10.2.3, Z691-4161-A

Silver Disc

Apple Hardware Test, Power Mac G4 SW Version 2 691-4165-A

Black OSX Panther Discs

Install Disc 1, Version 10.3, Upgrade Disc 2Z691-4633-A

Install Disc 2, Version 10.3, Upgrade Disc 2Z691-4586-A

Install Disc 3, Version 10.3,Upgrade Disc 2Z691-4587-A

Black OSX Tiger Discs

Install DVD, Version 10.4 Upgrade Disc 2Z691-5305-A

Leopard

Install DVD, Version 10.5.1 Upgrade Disc 2Z691-6178-A

Snow Leopard

Install DVD, Version 10.6.3, 2Z691-6634-A