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CF as a harddrive - important info

Posted: Sun Jun 24, 2018 9:20 pm
by Kyodai
SkydivinGirl aka Heather has shed some light on the whole CF problem.

So if you ever had any problems booting from a CF you use as a HDD replacement then there might be the problem of "fixed drive vs. removable drive" by many BIOS. I always wondered why my Toshiba Libretto or the IBM PC-110 are so picky about CF, but actually in most of the cases it's some kinda flag that marks them as "removable", preventing many BIOS from booting.

So to make a long story short - there's this tool ATCFWCHG which can change the flag on the CF card.

The command is ATCFWCHG.COM /P /F for a CF on the primary IDE channel.
For secondary IDE channel use ATCFWCHG.COM /S /F instead.

The card needs to be Master on any of these channels for the tool to work.

Also make sure to use "fdisk /MBR" and "sys" on the drive letter to prepare it for being DOS/Windows bootable.

The tool is located here:

I'll make a local mirror when i got some time.