Jaguar Drive Not Recognized |
September, 20, 2003 10:28 PM |
abpanman |
I've been running 10.2.6 for a few months now with relatively few problems. I have X on one drive and 9.2 on another. This week I had to boot back into OS 9 to do something. While restarting there was a message that the drive could not be recognized and asked if I wanted to initialize it? I clicked cancel and proceeded with the OS 9 startup. It turns out the X drive didn't mount and now I can't get it to mount or XPF to even see the drive. Suggestions anyone? PM 8500, Powerlogix G3/400, 768 RAM, 9 GB HD (OS 9), 4 GB HD (OS X) (both SCSI), ATI Rage Orion, PCI USB and Firewire. Andy |
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RE: Jaguar Drive Not Recognized |
September, 21, 2003 9:49 PM |
abpanman |
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Good news on the resolution of this. I first ran the Apple Disk First Aid (OS 9) and it found problems but couldn't fix them. Then I ran Norton Disk Dr. and it repaired the disk and mounted it on the desktop. From there it was a simple launch of XPF and it seems to be working fine so far (knock on wood). I haven't booted back into OS 9 yet though. I wasn't aware you could run the Apple Disk Utility from the OS X Install CD. If it happens again I will try this first. Thankfully I didn't have to initialize the drive. |
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RE: Jaguar Drive Not Recognized |
September, 21, 2003 3:15 PM |
marcush |
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Disk Warrior. It has saved me in similar situations before. |
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RE: Jaguar Drive Not Recognized |
September, 21, 2003 2:51 PM |
lyonsdj88 |
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I've gotten bit by this same thing before too. I don't think it is due to XPF or OS X as I have seen this happen many times with systems that only had OS 9 installed. I think it is a powersurge or SCSI timing thing. Once I lost 5 SCSI drives on an 8600 all at the same time after a reboot. System was running fine and I installed software that required a restart, after that I just got the ? and gray screen. All 5 drives had bootable OS's. So I booted from CD and when the system tried to mount the drives I got the "This disk is unreadable" message for all 5 drives one after another. Like a fool I initialized all 5 drives and lost all my data. Later to find that I could have fixed the drives. I think what got me was a powersurge from the grid as all 5 were unreadable. I think when 1 drive goes like that it is a timing bug in firmware between the SCSI bus control chip and that drive it self. Often a short to the drive is the trouble, so make sure that it is fastened down well and nothing can contact the jumper pins or other parts of the drive were power flows. And be sure every thing is tight scsi cables, jumper pins, power cables. |
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RE: Jaguar Drive Not Recognized |
September, 21, 2003 2:28 PM |
OSXGuru |
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I've created a couple of bugs to track this issue: Document fix for problem mounting Mac OS X volume when rebooting in Mac OS 9 Recognize unmounted volumes? |
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RE: Jaguar Drive Not Recognized |
September, 21, 2003 2:16 PM |
OSXGuru |
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What I've done to fix this problem in the past is boot from the Mac OS X Install CD (as if I was doing an install) and then run the Disk Utility to repair the disk (the Disk Utility is available as one of the menu items in the Installer). Then you can quit from the Installer to reboot into Mac OS 9 (i.e. you don't actually have to reinstall). If I remember correctly, Disk First Aid won't fix the problem from Mac OS 9, but the Mac OS X Disk Utility will fix it. It's possible that other utilities, such as Disk Warrior or the like, could fix this as well--I don't think I've tried those. |