Bootable Image Building

                For Users of RFDISK, RFORMAT and CDTOOLS.



Users with RFDISK, RFORMAT and CDTOOLS can prepare Floppy and Hard Disk
Emulation Boot Images in an expedited manner, using the tools in combination.

There are four type of Bootable Images supported by the CDTOOLS.

No-Emulation Boot.
Standard Floppy Boot Emulation.
Extended Floppy Boot Emulation.
Hard Disk Boot Emulation.


No-Emulation Boot Images consist of pure Code. These need to be created by
Compilers and/or Assemblers with the Origin set to 7C0:0 and a length less
than approx 600KB.

Standard Floppy Boot Emulation Images are created by constructing a Bootable
Floppy Disk, with the desired Software on it, then Ripping an Image of it.

Extended Floppy Boot Emulation Images require a more complex procedure to
create. The Procedure is described in the Supplement SUPP.TXT. Standard
Floppy Boot Images for Floppy Drives, such as the 2.88MB, Drive that may be
unavailable, can be created using the Extended Floppy Boot Image Creation
Process.

Standard Hard Disk Boot Emulation Images are created by constructing a
Bootable Hard Disk, with the desired Software on it, then Ripping an Image of
it, in the same manner as the Standard Floppy Disks.



STANDARD FLOPPY BOOT IMAGE CREATION

1. Format an appropriately sized Floppy Disk.
2. Install Operating System and other desired Files.
3. Rip the Floppy Image using any Disk Ripper. The Included GETDISK can be
   used as follows:

   GETDISK A: 0 2400 ImageFileName  (1.2MB Floppy)  (Use B: for Second Drive)
   GETDISK A: 0 2880 ImageFileName  (1.44MB Floppy)  (Use B: for Second Drive)
   GETDISK A: 0 5760 ImageFileName  (2.88MB Floppy)  (Use B: for Second Drive)

Alternatively use the method described in the Extended Floppy Boot Emulation
Image Creation instructions SUPP.TXT and choose one of the Standard Sizes.



STANDARD HARD DISK IMAGE CREATION

You will need an Empty Hard Drive, or one that can be completely erased.

1. Run RFDISK.
2. Select the Drive
3. Use the "K" to clear all Partitions (if any).
4. Use the "M" to refresh/install the MBR
5. Create the Primary and Extended Partitions you desire.
   Use only CHS Partition Types (1, 4, 6 and B for Data and 5 for Extended).
6. Set the intended Boot Partition Active.
7. Use the "E" command to Erase the Headers in each Data Partition.
8. Write changes to Disk with the "W" Command.

9. Determine the number of Sectors required to hold the Disk Image. If you
   have not determined this in advance, you can obtain the number as
   follows:

   Select the Drive again.
   Set the Geometry using "G 1 1".
   Write down the highest End=### Number shown.
   If the Number is larger than the size of the Disk you plan to burn or
      16434495 (8GB), whichever is less, then the Image is too big. You will
      have to redo your layout.
   Quit RFDISK. DO NOT Write any changes.

RFORMAT allows unmounted Partitions to be Formatted. You can Format the
Partitions at this point using the "Drive Partition#" Mode. See the RFORMAT
Users Manual for Details. If you Format all of the Partitions here, you can
skip Step 11.

10. Reboot Computer.

One or more new Partitions will be added to your Computer representing the
Partitions on the Hard Drive. Existing Partitions may be moved to new Drive
Letters. All new Partitions should be reported as invalid or empty if
pre-formatted.

11. Format and optionally Label each New Partition. Be careful not to Erase
    existing Partitions.
12. Place Operating System and other desired Files into the Partitions. Boot
    Files such as IO.SYS must go into the Partition that represents the Boot
    Partition on the New Drive.
13. Rip an Image of the Hard Drive with any Ripping Tool. The included
    GETDISK can be used as follows:

    GETDISK DriveNumber 0 N
    DriveNumber is the INT 13 Drive Number (0x80 = C:)
    N is the total number of Sectors needed, as determined in Step 9.