What are the screens you are seeing on the mac during boot? What is the last one before the reboot?
Try a safe boot.
Shutdown your machine. Hold down the shift key. Poweron. Wait awhile Wait awhile while you harddrive
is being checked.
Do you have the orginal dvd/s for the machine? Should boot one of them & run disk utility.
You should run disk utility. It under on of the pulldown after you enter the language.
a) verify the disk
b) update your permissions.
Try a startup manager boot. Should give you an idea if the hardware is working.
Try holding down the option key then power on. This brings up the startup manager. Click on your hd. Click on right arrow key.
Shut down the Mac, then power it up, and before the screen lights up, quickly hold down the Command, Option, P, and R keys, until the Mac has chimed twice more after the powerup chime. Then, before the screen lights up, hold down Command-Option-O-F until the Open Firmware screen appears. Then enter these lines, pressing Return after each one:
"The reset-all command should restart your Mac. If so, you have successfully reset the Open Firmware settings."
How to eject a cd from the internal cd drive:
List of devices:
List of variables:
( nvram is the equivalent Mac OS X terminal command. )
Resetting your Mac's PRAM and NVRAM
reset the PMU
that the hard drive is nearly full. I have a Western Digital EIDE Caviar SE 320GB Hard Drive, never used. According to documentation, I need a Mac-compatible ATA/100 controller card.
I have heard that there is some kind of USB adapter that I may be able to get in order to use this as an external drive. Is there such a device?
If you want to boot off of external drive, you need a firewire drive.
I recommend you do a google search on any external harddrive you are looking at.
I bought a low cost external drive enclosure. When I started having trouble with it, I did a google search and found a lot of complaints about the drive enclosure. I ended up buying a new drive enclosure. On my second go around, I decided to buy a drive enclosure with a good history of working with Macs. The chip set seems to be the key ingredient. The Oxford line of chips seems to be good. I got the Oxford 911.
Here is an external hd enclosure.
Folks in these Mac forums recommend LaCie, OWC or G-Tech.
Here is a list of recommended drives:
FireWire compared to USB. You will find that FireWire 400 is faster than USB 2.0 when used for a external harddrive connection.
How to format an external harddrive:
You need to delete some files ASAP. Best to have greater than 2gig of free space. Many posters to these forums state that you need much more free space: 5 gig to 10 gig or 10 percent of you hd size.
Be careful when deleting files. A lot of people have trashed their system when deleting things. Place things in trash. Reboot & run your applications. Empty trash.
Go after large files that you have created & know what they are. Do not delete small files that are in a folder you do not know what the folder is for. Anything that is less than a megabyte is a small file these days.
"The simple, fast way to save disk space"
OmniDiskSweeper is now free!
This will give you a list of files and folders sorted by size. Go after things you know that are big.