Akai MPC 3000 Operator's Manual page 195

Chapter 9: Saving to and Loading from Disk
sound files used by the PGM files). Next, the first ALL file (all
sequences and songs) that is found will be loaded.
To cause specific programs, sounds, sequences, and songs to load
automatically when power is turned on, save a single APS file to a
disk that contains the desired programs and sounds, then save an
ALL file that contains the appropriate sequences and songs to the
same disk. Insert this disk in the drive and turn the power on—the
APS and ALL files will load automatically.
If you have a SCSI hard disk connected
If you have a SCSI hard disk connected and no floppy disk is in the
drive when power is turned on, the MPC3000 will load the following
files from partition A of the hard disk automatically: STARTUP.APS
(and all sound files used by that file) and STARTUP.ALL.
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