I have purchased a 64GB compact flash UDMA card and am unable to boot up in DOS.
The machine I'm running has a Pentium 1.6Ghz process in it just to give you an idea about how "modern" it is compared to say, a 486. The BIOS can see the drive fine.
If I boot the machine using a Windows 98 SE floppy disk (or even a DOS6.22 boot disk), DOS can see the drive perfectly and I can easily work with files.
I have run clearhdd.exe and fdisk.exe to set the drive up, which worked without any problems at all. After that, I used the
format c: /s command which successfully worked and copied the files across.
When the machine boots up though, I get a black screen with a blinking cursor, that's it. I have successfully used a 4GB CF card with this same machine and it booted fine which leads me to believe it's the CF card, however, DOS can see it perfectly.
I suspect that it's not booting because it's looking at the wrong "sector" or part of the disk responsible for booting? I'm not sure.
Any advice would be appreciated.