I replaced the DVD drive in my imac G5 and it came up with no problem the first time after the drive was installed. It could read the titles to the movie I had in the new drive but it wouldn't play the movie so I decided to reboot and try again. After rebooting it goes as far as the gray screen with the apple in the middle of the screen and the rotating circle below that and then it shuts off after a minute or two. The first time this happened I remembered that I didn't take the DVD out of the drive and thought it may be trying to boot off the DVD drive so I removed the new drive, put the old one back in (with no DVD) and tried to restart. I got the same result. Next I removed the old DVD drive and tried to boot with no DVD drive installed at all and again, I got the same result (gray screen with apple and rotating circle then it shuts off). Does anyone know of something else I can try? Thanks for any help you have to offer.
Randy
When you boot up g5 hold down the command button (apple logo) and the letter s at the same time to but the g5 in single user mode. When it boot in single user mode type fsck -f so it can check disk on the hard drive and repair Mac OS X. After it done doing check disk type exit and see if it will boot up regularly.
SOURCE: Replacing the hard drive on a imac G5 first generation
http://www.dtgeeks.com/index.php/features/tutorialview/imac_g5_hard_drive_replacement/
the above link wont let u keep on searching for u information but will directly get u the information on how to replace ur hard drive n wat type of hard drive will support ur machine.
feel free 4 further assistance .rate the particular experts solution as fixya that helps u understand n solve ur problem
SOURCE: iMAC G5 Boot problems
This sounds like the HDD hard died. Sometimes you can hit "option" at the startup to see if the HDD is corrupt. If you see a file with a questionmark in it, then you need to reinstall the OS, BUT before doing this, restart it and hold "apple T" it make the HDD and the computer a giant external hardrive. Just get a firewire cable and backup the hard drive onto another system before reinstalling.
If you see a disk icon come up, there is definate directory problems as it still recognises that it has a hard drive. Disc warrior might fix it.
SOURCE: imac g5 model:a1058
iMac G5's cannot run windows alone, but older software can be purchased like Virtual PC to run windows on that unit.
SOURCE: Keyboard and Mouse don't work anymore
Hi, Sorry you are having problems,
Well Marcelo, the first thing to do in a situation like this is to restart your Mac or even better, shut down and restart. So, if you have done this, and still the keyboard and mouse don't respond, and, as you have mentioned, you have tried the other USB ports on the back of the Mac, it sounds like somehow, unexpectedly, your iMac motherboard got a shock of some kind and it killed the USB controller....
Last thing to try is to unplug the iMac completely of everything and let it sit for 10 minutes and then plug just the keyboard and mouse back in and try to see if that does the trick..
Otherwise, Apple will cover this if it is still under warranty.
Good Luck.
SOURCE: Imac g5 cant log in get grey screen
Hello, this can be either a software or hardware problem,
To know this, please try to repair your hard drive by pressing "cmd - S" at startup, that will take you to single user mode. you will see a black screen with unix lines. Here you type "fsck -f" and hit enter. Wait untill the repair is finnished. If it shows problems then you have a hard disk problem. If not, try to reinstall the system using the DVD, and choose "archive and install" option, to keep your files and settings.
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