Definitions for "Minidisk"
A virtual disk, the VM/CMS term for what appears to be a small complete disk pack, but in reality is a section of an actual physical disk.
Recording and playback device using small disks similar to CDs to store audio using lossy data compression to reduce file size.
a logical subdivision (or all) of a physical disk pack that has its own virtual device address, consecutive virtual cylinders (starting with virtual cylinder 0), and a VTOC or disk label identifier. Each user virtual disk is preallocated and defined by a VM directory entry as belonging to a user.