5.25 floppy not recognized in BIOS.

We have a Chinon FR-506 floppy drive that we've installed in a relatively new Pentium III machine running FreeDos 8.  We need to install some programs to the system and without them the system is pretty much useless.  The floppy is a 1.2mb 5.25 and worked in the last system it was in (an old 386).  We've tried the drive as both the A drive and the B drive.  When we try to access the disc it errors out saying the disk was not found.  Is there any fix to get FreeDos to recognize the drive, or is it a setting on the motherboard?  Alternately, are we doing something wrong with the cable connection?  When the drive is plugged in backwards, the light stays on on the drive and FreeDos says the drive is not ready.  When it is plugged in correctly it gives a seek error.  So, we need FreeDos to find the floppy.
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Gary CaseRetiredCommented:
It's generally a BIOS setting -- you need to let the BIOS know this is a 5.25" 1.2mb device and not a 1.44mb 3.5" floppy.   Look in the BIOS setup program and you should be able to resolve this very quickly.   Also, many newer systems have no provisions for dual floppies -- so you'll have to have JUST the 5.25" connected (i.e. NOT the 3.5" drive which I assume you also have).

clintstewartAuthor Commented:
Thank you garycase for your reply.  We've already tried all the Bios setting we can think of, including setting it as a 3.5 even though it is a 5.25.  A recent discovery: a single 3.5 works fine on this Bios so it probably only supports one drive.  Still no luck.
Gary CaseRetiredCommented:
Does the BIOS have a 5.25" setting?
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Gary CaseRetiredCommented:
... you also most likely need to use a single drive cable => if the 5.25" drive is connected on the 2nd connector of a dual drive cable, it most likely won't work on a controller that only supports one drive.
Gary CaseRetiredCommented:
... probably the easiest alternative here (assuming you have the old system available -- or at least another system that the drive works on) is to simply copy the 5.25" floppies you need to 3.5" disks.

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clintstewartAuthor Commented:
Tnks garycase for all the help. I found an older system in my attic that had both a 3.5" and 5.25". It booted and we were able to copy all info to the 3.5" flops. But there was this one particular 5.25" that had an important file in a bad sector. Not sure were going to be able to retrieve it because the customer does not want to spend any more for data recovery.

I think that should wrap it up for this question!

Gary CaseRetiredCommented:
If it's data, I can't help.   If it's an old program disk with a bad sector, I may be able to help out here.  I have a LOT of old programs archived.   Send me an e-mail note with the details.

You might also try using the 5.25" drive you had from the customer's PC instead of the drive that's in your old PC (just temporarily replace it -- outside the case is fine if the data cable reaches).   5.25" floppies can be very sensitive to alignment ==> it's not uncommon to be able to read one on the drive it was written on but not on other drives.

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