Yeah, hence why I suggested it at the beginning. Still, it didn't hurt checking all the other possibilities.
The Cube does fine with these CPU upgrades. I've been running one for years, a 1.7 GHZ Sonnet. They all come with a base fan, which takes care of the heat issues very effectively. It is worth keeping in mind though that all of these Macs are 6-7 years old now. That's a long time for a computer to remain in service.
You can also try an Open Firmware reset. Do you know how that is done?
No startup chime at all? That's unusual, assuming the speakers are connected and working. This suggests a low-level hardware failure of some kind. Do you have anything connected to this Cube via USB or Firewire?
Are you sure it is seated correctly? Maybe it got bumped.
No, how do I do an "Open Firmware reset"?
It should actually take a few minutes and find the targeted Mac's hard drive for start up after you turn it on.
This is interesting as I have the same problem on a Cube that previously worked fine. No CPU upgrade, however. Try booting off the targeted Mac's hard drive. I'll bet it is your hard drive.
Also there are some weird settings for the slave master on the Cubes optical drive and hard drive because they are on the same ribbon. I somehow thought this was the issue with the Cube I own because I recently swapped out the dead dvd drive for a working cd rom drive, but haven't played around with it sufficiently to figure it out.
Start the Mac up holding down Command + Option + O + F, until a blue screen appears.
At the command prompt type:
reset-nvram [return]
reset-all [return]
The Mac will then (with luck) reboot.
If this doesn't work, you're probably in for a tear-down. It's not fun, I know.
It doesn't seem to ever find the hard drive for the Cube (just the external drive connected to it). Is that because the other machine is System 9?
If the hard drive is the problem, why won't it boot up from a System CD? It tries for a while and then just gives the circle with the line through it.
If I do that, won't it clear out the firmware upgrade that I needed for the CPU upgrade? The CPU upgrade required a firmware upgrade. Of course, I could probably load that again I guess. Is that what you are suggesting?
I think you are right...if these resets don't work, it must be a hardware problem (probably memory or CPU), and I'll have to take the thing apart.
I could be wrong, but I don't think it will have any effect on the firmware.
I'm a real doubter that the hard drive could be the cause of your problems, but it's easy enough to find out. Pull out the core and disconnect the drive power. Then try to start up on a CD or DVD.
I'm not sure if I understood your results from Target Disk Mode. If you restart with the T-key held down, you should see a blue screen with a Firewire logo bouncing around as a screen saver. If you don't, then you're not getting into Target Disk Mode.
Start the Mac up holding down Command + Option + O + F, until a blue screen appears.
At the command prompt type:
reset-nvram [return]
reset-all [return]
The Mac will then (with luck) reboot.
If this doesn't work, you're probably in for a tear-down. It's not fun, I know.
The Cube does fine with these CPU upgrades. I've been running one for years, a 1.7 GHZ Sonnet. They all come with a base fan, which takes care of the heat issues very effectively. It is worth keeping in mind though that all of these Macs are 6-7 years old now. That's a long time for a computer to remain in service.
You can also try an Open Firmware reset. Do you know how that is done?
Well, it did apparently turn out to be a hard drive problem. I disconnected the power to the hard drive and it booted off of the CD. So another question...do I need to get a 2.5 inch or 3.5 inch replacement drive?
You'll need a 3.5" ATA drive (parallel, not serial). Go for about the smallest size you can find. IIRC, the Cube can't recognize partitions over 160 GB.
Happy to hear you found your problem.
Another question...I remember that there is a way to use the firewire connections between two machines to format the drive (that's how I did it the first time). I have another Cube. Do I just connect them together, or is there some command that I need to run?
O.k. I bought a 160 GB hard drive (ATA). I assume that should work. Thatnks to all for the help. I learned quite a bit for the future. I hope everyone else did too.
Another question...I remember that there is a way to use the firewire connections between two machines to format the drive (that's how I did it the first time). I have another Cube. Do I just connect them together, or is there some command that I need to run?
Target Disk Mode? You could do that, or just use the system install discs, which you'll presumably need anyway.
Yes, it is target disk mode I think (how do I get to that?). Of course I have the original install disks, but I don't want to do every application over again if I don't have to. I remember that it only took a few minutes to do last time (instead of the long time it would take to install each app one by one).
I don't know how orthodox it is, but I just go to utilities with one disk in target mode or fw connect, and go to "restore" where I copy the hd I want onto the new one. But if your hd is dead, this won't work.
I think you just helped me fix my own cube, I thought it was a hd problem and you proved me right.
Excellent. I'm glad that my problems were able to help someone else.
Actually, your suggestion will work. But I'm going to copy from my other cube to the broken one. I'm replacing the disk on the broken one, so it should work I think (if the "restore" command is the one I'm supposed to use to copy all of the files from the other Cube onto my new replacement drive).