[dweeks]

I've got a new dual 1.42 (it screams), but I have a problem with my internal backup drive. It's a Western Digital Caviar 80 gig that was the slave drive in my old Quicksilver.

I have it mounted in the rear (ATA 100) drive sled.

It has a full 10.2.4 installation (it used to be my primary drive) but I can't boot from it, nor can I unmount it. When I try to umount it, I get the message that says the disk is in use. I am sure that there are no login apps running from, as I have done a safe boot, and I -still- cannot unmount it.

I can select it from the Startup disk pref pane, but it restarts partway through the boot process, and switches to the Apple-supplied internal drive. Option booting is no good, as the drive does not show. Read and writes are all normal.

Examining the drive and the bus with Apple System Profiler shows that the drive is NOT ejectable, and I cannot for the life of me figure out why.

I currently have the jumper set to cable select, but I have also tried it as slave. I have also moved it to the ATA 66 bus, with the same lack of results.

Any thoughts or help?

Thanks,

David

[:XI:]

it's a fixed disk, i'm guessing it's not supposed to be ejectable.

why would you need to 'eject' it?

[reader50]

Usually you unmount drives/partitions:

1. To do repairs on the disk.
2. To protect the drive against a software upgrade.
3. To hide the porn folder if the boss comes into view.

For example, TechToolPro updaters search for and update every TTP copy. If you want to keep a known good copy on a different partition, you have to unmount that partition before running the updater.

Also, if you did a lot of beta software testing, unmount the other drives/partitions. Do your testing, then boot from a good partition and run a virus check on the test partition before booting from it again.

The last time I tried to unmount a partition in 10.2.3, it unmounted all partitions except the boot partition - and complained about that one "can't unmount - files in use". I think Apple needs to work on the unmount code a bit more. Naturally, it works perfectly in 9.