Boot with CP/M system disk in A:

Format a blank disk mounted in B:

A>DUP

Select:

• A - Format a disk
• B - Drive B:

ENTER to start formatting (ENTER to confirm)

^C three times when complete

Create a 63K CP/M system

A>MOVCPM 63 *

Save the new prepared system to disk using SYSGEN

A>SYSGEN
SOURCE DRIVE:			<ENTER>
DESTINATION DRIVE:		B<ENTER>
INSERT DISK IN B:		<ENTER>
DESTINATION DRIVE:		<ENTER>

Copy CP/M files from A: to B:

A>PIP B:=A:PIP.COM
A>PIP B:=A:SUBMIT.COM
A>PIP B:=A:KEYDEF.COM
A>PIP B:=A:SYSGEN.COM
A>PIP B:=A:EXBIOS.COM
A>PIP B:=A:CONFIG.COM

Mount the new disk in B: into drive A:

• Press RESET (on 4p, press 2/F2 to force booting on floppy)

Mount the disk containing the FreHD CP/M Utilities in B:

Copy the utilities to A:

A>PIP A:=B:VHDUTL.COM

Mount the disk containing the MM Hard Disk Drivers in B:

Copy the following files to A:

A>PIP A:=B:BUILD.COM
A>PIP A:=B:CPMFIX.COM
A>PIP A:=B:HDRS15M.COM

VHDUTL for CP/M doesn't work when booted from floppy.

Message: Interface not found.

Cause: ENEXTIO (MODOUT.4) is not active in CP/M if booted from floppy.

Boot a DOS system and run VHDUTL from there. Or get a fixed version of VHDUTL.

Create a new virtual hard drive:

VHDUTL (MNT,ADDR=1,VHD= "filename",CREATE,HALT)

Creates a new virtual hard disk file:

• ADDR=1: drive address (1=primary, 2=secondary)
• CREATE will create an ST-251 equivalent:
  • Cylinders 840
  • Heads 6
  • Sectors/Cyl 192

=> Mounted OK.  Press Reset

Mount the new CP/M disk into drive A:

• Press RESET (on 4p, press 2/F2 to force booting on floppy)

Format the new hard disk

A>EXBIOS                        BIOS extension for DS disks
A>CPMFIX                        Displays the user number
A0>HDRS15M F=ABCD H0=EF INIT	1 15MB disk with 2 partitions on each
                                E: and F: on 1st HD
                                Floppies are assigned to A: B: C: D:

• No flawed track to specify.
• This creates 2 partitions of 7.5MB each.
• Verifying takes much more time than formatting... total 20 mins
• Don't init H1 if no image is mounted!

Press RESET (on 4p, press 2/F2 to force booting on floppy)

Build the HDBOOT.SUB file:

A0>BUILD HDBOOT
EXBIOS
CPMFIX
HDRS15M H0=AB H1=CD F=EFGH
(blank line to terminate)
A0>

• 2 15MB disks with 2 partitions on each. A: and B: on 1st HD, C: and D: on 2nd
• Floppies are assigned to E: F: G: H:.

Submit the HDBOOT.SUB FILE:

A>SUBMIT HDBOOT

Press RESET (on 4p, don't press 2/F2 to boot from HD)

• The system should now boot on the hard disk on the model 4p (without the modified boot ROM). With modified boot ROMs it may not succeed, as the 'bootable' flag was not set while creating the disk image. See step 22.

Mount the CP/M System Disk in drive E: (floppy A:)

• Copy all files from it to the new hard disk.

A0>E:PIP A:=E:*.*

Mount the disk containing the FreHD CP/M Utilities in E:

• Copy all files from it to the new hard disk.

A0>PIP A:=E:*.*

Mount the disk containing the MM Hard Disk Drivers in E: Copy all files from it to the new hard disk.

A0>PIP A:=E:*.*

The VHD file must be patched in order to be recognized by the FreHD Boot Selector.

• Sector 0 byte 0x08 = 0x01 (Bootable flag)
• Sector 0 byte 0x0B = 0x02 (Type: 2=4p natively bootable OS)