Neil Pollack <[EMAIL PROTECTED]> wrote:

>I installed a new hard drive in my system and used the system restore 
disks to be finally able to boot my Mac again.  Now, I still can't mount
my original hard drive.  It was formatted with Apple Drive Set-up, but it 
doesn't show up on my desktop.  I tried to use the Hard Disk SpeeedTools
to mount it but nothing happens.  Does anybody have any suggestions?  

I ran into a similar situation with my son's S900 last Oct and at Xmas
time (He's at college, so he uses it daily). 

In his case, he has three HDs (2 [30GB] IDE - running off a Acard ATA66
PCI card and 1 [2GB] SCSI) with OS 9.1 on each of the 3 HDs (we use
multiple partitions on all our HDs). Anyways, in both situations, his main
boot partition suddenly came up with the flashing ? mark, then booted off
the SCSI HD. We ran Diskwarrior, TT Pro and Norton and NONE of the three
saw the missing partition. So, since he still had two good bootable
partitions, I told him to just keep using the machine off the second IDE
partition. 

Here's the interesting part - within 10 days, BOTH times, the second IDE
boot partition came down with the SAME problem! We ran Diskwarrior, TT Pro
and Norton and, again, NONE of the three saw the missing partition. 

So, the first time (in Oct), I erased both of the bad partitions and
reinstalled OS 9.1 on both (from a back-up disk image). As you already
know, the problem returned at Xmas. So, this time, I erased both of the
bad partitions and did a clean-system install of OS 9.1 on each of the
partitions. He has had no problems to date.

Unfortunately, I have not been able to determine what caused these
problems. I have 2 S900s and a PM9600 and have had them torn down to bare
bones too many times recovering from "disasters" (I'm a perpetual
tinkerer). This is the first time I've ever seen a bootable partition
"disappear" (other than a hard drive failure) and not be recoverable by
Disk Warrior (4 times no less). 

The only consolation I have is that I know what to do the next time it
happens. BTW, I recommend making a Disk Image of your operating system
(pre-OS X) and keep it for these types of disasters - much quicker
recovery times.



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