After a long DEC-inflicted delay, I finally found time to replace the
Altos' CMI doorstop with a 20MB Seagate ST225. The ST225 formats fine
in the Diags and passes all read/write/seek tests, but neither CP/M nor
MP/M, booting from floppy, are able to access the drive.
I'm fairly sure I'm missing a critical step, like partitioning and
making a filesystem, but there's a double hitch. I know nothing about
CP/M _and_ nothing about the Altos. Online info is non-existent for the
580 and bewilderingly abundant for CP/M.
I'm soliciting "favorite CP/M tutorial" recommendations, as well as a
Cx4 for reading the HDD from the OS.
Doc