Vipersan wrote on 2021-10-14, 21:18:Why is it that some CF cards do not boot ?
I have a 512mb and a 1gb CF ..
I have successfully got DOS on the 512 which boots no […]
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Why is it that some CF cards do not boot ?
I have a 512mb and a 1gb CF ..
I have successfully got DOS on the 512 which boots no problem..
The Transcend 1GB refuses to boot even though the DOS files were written to it successfully..
I also tried creating an active partition on this CF card ...and then tried to read the partition information using Fdisk ...and no partitions existed even though I just created it with Fdisk.
I seem to remember reading a long time ago that there was a program that could flip a bit on the CF card making it useable as a hard drive...not just as a storage medium.
..or did I dream it ?
rgds
VS
In my opinion these problems are caused by the PC BIOS, I recently solved it, by chance I found the solution, I had a 128MB from SanDisk and a 512MB Unigen, neither of them worked as a boot disk, the PC is a 386DX with BIOS AMI, I haven't tried other cards like 486 or Pentium, but I think it works there too (you have to try).
In short I inserted the 8MB Canon card and set the values (cyln 245) (head 2) (Sec 32) for that card to work, then I replaced it with the 128MB one but I forgot to change the values from BIOS, from Windows 98 boot disk I created the DOS bootable partition, then from DOS I formatted all 128MB without problems (even if there is an 8MB disk in the BIOS).
An important thing in my opinion is not to bring the CF via USB adapter in today's Windows, to load the software I only used floppies, but I think CD-ROMs are fine too.
AMD 286-16 287-10 4MB HD 45MB VGA 256KB
AMD 386DX-40 Intel 387 8MB HD 81MB VGA 256KB
Cyrix 486DLC-40 IIT387-40 8MB VGA 512KB
AMD 5X86-133 16MB VGA VLB CL5428 2MB and many others
AMD K62+ 550 SOYO 5EMA+ and many others
AST Pentium Pro 200 MHz L2 256KB