"Inappropriate behavior" of a CF card in my old system \ VOGONS

"Inappropriate behavior" of a CF card in my old system

Topic actions

First post, by muon

Posted on 2018-01-27, 09:36

muon Offline

Rank Member

Rank: Member
Posts: 204
Joined: 2017-09-16, 09:35

Hi!
I have a Transcend Compact Flash of 256 MB. I use in my retro PC with a CF to IDE adapter without any problems The exactly model is Industrial CF300 like this picture:

I can configure to work like a primary, secondary IDE hard disk without any issues

Last month I bought another CF, the same model, but 512MB of capacity. Now I have a problem: I can NOT boot form MS-DOS 6.22 with this CF card

71jfpXU40RL._SX355_.jpg

The CF is properly detect by BIOS. I can configure like primary and secondary IDE but it doesn't boot. If I put a boot disk in the drive A , system starts properly and the CF works properly like C hard drive, but it never boots.

Yesterday I made another test: I installed W95 OSR2 and CF boots without any problems

Any ideas why the 512MB CF does not boot in MS-DOS

Reply 1 of 4, by derSammler

Posted on 2018-01-27, 09:54

derSammler Offline

Rank l33t

Rank: l33t
Posts: 3886
Joined: 2017-04-14, 11:30

Just boot from floppy once and issue the command "fdisk /mbr". After that, it will most likely boot just fine into MS-DOS.

Reply 2 of 4, by PTherapist

Posted on 2018-01-27, 12:49

PTherapist Offline

Rank Oldbie

Rank: Oldbie
Posts: 939
Joined: 2017-03-24, 02:00

As you didn't mention in your post, after booting from a DOS floppy -

Have you tried doing sys c:

Reply 3 of 4, by muon

Posted on 2018-01-27, 18:06

muon Offline

Rank Member

Rank: Member
Posts: 204
Joined: 2017-09-16, 09:35

PTherapist wrote:
As you didn't mention in your post, after booting from a DOS floppy -

Have you tried doing sys c:

Yes, I did

I've tried:

format c: /s

format c: and then sys c:

Install MS-DOS from the original MD-DOS floppies

Change the BIOS parameters (cyl, heads, etc)

Change the parttions with fdisk (only one partition in CF card, two partions...)

I always get negative results

Reply 4 of 4, by muon

Posted on 2018-01-27, 18:09

muon Offline

Rank Member

Rank: Member
Posts: 204
Joined: 2017-09-16, 09:35

derSammler wrote:
Just boot from floppy once and issue the command "fdisk /mbr". After that, it will most likely boot just fine into MS-DOS.

I haven't tried "fdisk /mbr ". Tomorrow I'll do it , but I bet it doesn't change anything.

Go to top of page Go to top of page

Back to General Old Hardware