DOS ain't dead

Adding large disk support to INT13h (Users)

posted by bretjohn  , Rio Rancho, NM, 01.04.2024, 17:28

For Large Disk support in the BIOS (INT 13h) refer to:

http://www.o3one.org/hwdocs/bios_doc/bios_specs_edd30.pdf

and RBIL (start with INT 13.41).

The extensions support up to 2^64 sectors. A sector can at least theoretically be up to 32k bytes (and maybe even 64k bytes, depending on the exact inmplementation), though in practice are probably limited 4k bytes.

Complete thread:

• Adding large disk support to INT13h - boeckmann, 01.04.2024, 11:54 (Users)
  • Adding large disk support to INT13h - RayeR, 01.04.2024, 15:31
    • Adding large disk support to INT13h - boeckmann, 01.04.2024, 18:44
  • Adding large disk support to INT13h - bretjohn, 01.04.2024, 17:28
    • Adding large disk support to INT13h - boeckmann, 01.04.2024, 18:41
      • Adding large disk support to INT13h - bretjohn, 02.04.2024, 16:54
        • Adding large disk support to INT13h - boeckmann, 02.04.2024, 19:23
          • Adding large disk support to INT13h - bretjohn, 04.04.2024, 19:33
            • Adding large disk support to INT13h - boeckmann, 04.04.2024, 23:09
              • Adding large disk support to INT13h - Laaca, 05.04.2024, 06:23
                • Adding large disk support to INT13h - boeckmann, 07.04.2024, 20:21
  • Adding large disk support to INT13h - mceric, 01.04.2024, 22:25
    • Adding large disk support to INT13h - boeckmann, 02.04.2024, 19:31
      • Adding large disk support to INT13h - mceric, 02.04.2024, 20:57
      • Adding large disk support to INT13h - tom, 02.04.2024, 23:16
        • Adding large disk support to INT13h - boeckmann, 04.04.2024, 23:09
        • Adding large disk support to INT13h - Japheth, 05.04.2024, 02:39
      • Adding large disk support to INT13h - ecm, 14.04.2024, 19:19