DOS boot disk blues

Discussion in 'General Computer Support' started by radman, Mar 23, 2012.

  1. radman

    radman

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    Please don't everyone laugh at once but heres my problem.

    I have an old medical system that uses a DOS 3.3 boot disk which has gone bad due to age, I have the flies on my old computer but it has DOS 7.0 on it so the disks I make with it will not work. My first problem was I had to format the diskettes as 720kb using <format a:/f:720> and it worked after I covered the hole on the disk with tape, but my problem now is I'm not sure if formatting the disk this way is changing it from HD to DD and if its giving it 9 sectors per track and I want the disk to think the files were written to it by an older version of DOS than 7.0 the system will only accept DOS versions older than 6.0. Can anyone help me please.

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    Last edited: Mar 23, 2012
    radman, Mar 23, 2012
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