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floppy will not read boot disk.

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by donmars 1 view

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I am trying to use a boot disk to set up a computer but I keep getting the error-"Invalid System disk, replace disk and press any key." There is nothing wrong with the disk, I have made several of them and they work on other computers but this one. I have replaced the the floppy drive, the cable, disabled the on board controler and replaced it with a ISA FDC board. I did each of these at least twice each. I am stumped. I have played around with many settings in the bios setup also. Any ideas?
thanks

5 replies

by don christner

In the BIOS, are you certain that you have the boot order - floppy then HD? During boot does it look to the floppy (ie, the floppy LED lights up)? Does the floppy disk in question boot other comupters? Post the answers and we can probably help.Don

by don christner

OK, when it first lights the LED, it's checking to see if a drive is present. Since it does not light the LED a second time (to read off of the disk), I think that it's not seeing the floppy drive. Try moving to the other connector on the floppy cable, maybe you have it on the drive B position which it will not boot from?

by donmars

I am accepting your answer don because you did in fact cause me to double check the boot sequence and sure enough though I should know better I actually had it c,a,cdrom. I really thought that it would boot to c then not finding a bootable disk there would move to a. after changing to a,c,cdrom it worked. I do know to place drive a after the twist in the cable by the way. Thanks a bunch for that big hint don.

Don

by donmars

Here Are The Answers__ In the BIOS, are you certain that you have the boot order - floppy then HD?-*"yes it's a,c,cdrom"*- During boot does it look to the floppy (ie, the floppy LED lights up)?-*"yes and no, first on bootup it lights up to see the drive but does not light again to attempt to read the disk in the drive."*- Does the floppy disk in question boot other comupters?-*"yes it does and I made multiple boot disks"*- Post the answers and we can probably help.

Thanks Don

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