Thanks for your ( mininal ) help Clint
Ok it works now, but I've realise that you must only have 1 file name ALL_SEQSALL on the floppy disk when the MPC 60 boot from it because it wont work
Here is what I found in the manual:
Files That Automatically Load on Power-Up
If a disk is in the drive when power is turned on, the MPC60 will load from the disk the first APS (all programs and sounds) file that it finds, including all sound files used by the APS file. If more than one APS file exists on the disk, the first one found will be loaded. If no APS files exist on the disk, up to 8 PGM (program) files will then be loaded into consecutive program numbers (including all 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 Marion System MPC-SCSI interface installed and a SCSI hard disk connected, and no floppy disk is in the drive when power is turned on, the MPC60 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.