Amir, I understand that it is a single cable, I have a G4 AGP which I purchased New in 1999. Not that I open the side panel a lot but it got to the point that when I open the side panel the cable connecting the HD (ATA) drives to the data buss would come loose. So after opening the side panel I would always make sure that the cable was connected. I've always had 2ea. drive installed in the drive cage and the drives are set to "Cable Select" The DVD/CD drive is connected to a different buss know as the EIDE buss. I think that the DVD/CD EIDE buss can effect the main ATA buss. But all things possible. There is always the possibility that one of your Power Supply voltages are low. The PS is a switching power supply and with your platform the PS going bad is only remotely going to happen. One thing that I do at least once a year is blow the dust out of the PS (I now use a 1.25Ghz Dual MDD) using compress air cans. You can get then at a Staples Store, that where I usually get mine or at a Fry's. If you decide to blow the dust out of the PS and the rest of the platform be sure to turn-off un-plug and let everything cool down for at least 15 to 20 minutes. Cheers Harry ("`-''-/").___ ..- -''"`.. _ ( 6_ 6 ) `-. ( ``-._.-`) (_Y_.)' ._ ) `._ `.'``-..-' ` `_..`--'_..-_/ /--'_.' ,' ((((,-'' ((((,' (((.-' fl On Feb 23, 2012, at 2:16 PM, Amir 'CG' Caspi wrote: > Hi Harry, > > No, it's single cables all around, and I tried swapping cables and > removing them entirely, in case of a short - no luck. Also, there's > no reason a cable would go bad "all of a sudden" ... the machine was > working fine one minute, then didn't work the next minute after an > attempted reboot. > > Thanks. > --- Amir > > On Thu, 23 Feb 2012, Harry A. Freeman wrote: > >> Amir, >> >> Do you have another cable that connects between the 1st, the lower >> disk drive and the 133Mhz data buss. >> If one one or more leads have gone bad you will not be able to load >> from your installed HD drives. >> However the above doesn't explain why you can not boot from a DVD/ >> CD because the DVD/CD drive uses the 66Mhz buss. Except that >> perhaps a couple of leads are shorted in the cable and is >> preventing any loading. >> >> Cheers >> >> Harry >> San Jose, Ca > _______________________________________________ > G4 mailing list > G4 at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/g4