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Book8088's CF2IDE stumps Freedos boot (Users)

posted by bocke, 04.02.2024, 15:06

> XT-class BIOSes don't usually support LBA, so the DOS kernel has to use CHS
> to access the sectors on the disk.
>

XT IDE universal BIOS is not "an usual" XT BIOS. It's a modern implementation of a BIOS extension that enables the use of IDE drives on retro machines that usually didn't support them.

Citing Lo-tech Wiki:
> The Vintage-Computer.com XT-IDE Community Project has developed several
> variations of an 8-bit ISA card that enables standard ATA (IDE) disks (and
> hence SATA or Compact Flash) to be used in an XT-class machine. The boards
> uses LBA addressing, and hence supports drives up to 137GB.

The rest of post is also offpoint. We didn't really usually try a random images. We figured out that the geometry is important early on in the topic.

The biggest problem is that FreeDOS fdisk didn't work on the machine. So it wasn't possible to partition the disk on the machine.

We did try some unusual things like trying to use FreeDOS sys on an MS-DOS partitioned disk because that is one of rare things we could try.

CF cards partitioned under an alternative FreeDOS 1.3 machine didn't work on the Book8088 either.

P.S. I appreciate anyone willing to try to help, but please read the whole topic carefully before replying. Often times what you suggest has been already tried several times.

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