R/382 Computer can't find OS

Stan
 

I just pulled my R/382 out of storage. It was working when I put it away several years ago, but now when I power it up, it passes all the self-tests and then searches for an OS to boot but can't find one. The hard drive has HP BASIC on it, the drive is spinning, but that's as far as I've gotten.

The 2325 coin cell battery on the motherboard was (of course) dead, so I replaced it, but this didn't fix the boot problem. Might this be a configuration that was lost when the old coin cell died?

Any ideas?

Thanks!

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