DOS ain't dead

Adding large disk support to INT13h (Users)

posted by mceric, Germany, 02.04.2024, 20:57

Hi!

I think Ontrack and EzDrive did both: Implement a geometry transform to make the best use of MS DOS CHS limits to reach 8.4 GB with "more heads" and implement LBA. And even if they did not: If you wrote a loader for XT-IDE compiled with LBA enabled, it will help you to use LBA and far more than 8.4 GB on LBA-enabled DOS versions like FreeDOS

Eric

PS: Other things like BDA (BIOS data area) also steal a few KB from conventional memory, so I guess people are used to that.

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FreeDOS / DOSEMU2 / ...

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