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(Gateway 2000) BIOS detects floppy drive but won’t read them.

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First post, by atjohns97

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I recent acquired a Gateway 2000 486SX/25 and I, for the life of me, cannot get this thing to read floppy drives.

It came with a Micronics 09-0093xx board and it came with a MIO-400 KF Revision 6 Floppy/IDE (and game port and COM port) controller.

No matter what drive i try to use, even verified good ones from other computers, they all have “diskette read error” pop up on the bios. First I tried the CMOS battery, nothin’. Then I tried the floppy cables, still nothin’. Just swapped out the power supply too before of voltage dips. Still a big fat nothin. Same error. My next idea is to swap out the controller board, but any other ideas to try before that would be much appreciated.

Thanks

Reply 1 of 3, by Horun

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Can you post a picture of the motherboard and pull the MIO-400 and take it's picture and post it ?
It does sound like a floppy controller issue if the drives work elsewhere AND you have the BIOS set proper.
If you checked the MIO-400 jumpers and they seem proper then I would swap out that controller ASAP !

Hate posting a reply and then have to edit it because it made no sense 😁 First computer was an IBM 3270 workstation with CGA monitor. Stuff: https://archive.org/details/@horun

Reply 2 of 3, by douglar

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Does the floppy light turn on? Does it turn off?

Reply 3 of 3, by atjohns97

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douglar wrote on 2024-08-24, 12:32:

Does the floppy light turn on? Does it turn off?

The floppy drive turns on.

Update. I got the drive reading by changing the power supply again, got far enough to install dos 6.22, now it’s back to not reading floppies again ???? So confused

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