m1k3e
Member
Hi all,
I recently picked up a DTK turbo XT clone off eBay a few months ago that I finally got around to working on. I managed to get the NEC MFM drive working (even though it was loose in the case!) but the 360KB floppy (Fujitsu M2551A) is driving me crazy so I figured I’d reach out for some much needed help.
When I first received the computer, the drive was set up as the B drive, with a 1.44 MB floppy drive set up as the A drive. The 1.44 MB drive worked without issue, but the Fujitsu drive was DOA. I bought a new old stock M2551A drive off eBay but this new drive couldn’t read or format any known good 360 KB disks.
I loaded ImageDisk onto the computer and got to work trying to get the new drive working. I did the RPM test and it averaged 300 RPM per minute as expected.
I formatted a known good disk on my 5170’s 360 KB drive via DOS and used that disk for the alignment test. The drive failed the alignment test, so I removed the drive and adjusted the stepper motor and top head until all tracks were found and reported 18 hits for both head 0 and head 1.
The drive now appears to be aligned, but I still can’t read or format known good disks via DOS. I get the “data error reading drive A” when formatting or attempting to read a disk.
Am I missing something here? The controller that came with the computer is an LCS-6610F.
I’m using the original floppy cable that came with the computer which appears to be in good condition. The drive is set as DS1 and there is a terminator resistor on the drive. I also tried the drive on a Magitronic XT clone and had the exact same issue, so I’m assuming it’s not the controller or cable.
This is my first time attempting to do any work on a 5.25" drive, so any help would be very much appreciated!
Mike
I recently picked up a DTK turbo XT clone off eBay a few months ago that I finally got around to working on. I managed to get the NEC MFM drive working (even though it was loose in the case!) but the 360KB floppy (Fujitsu M2551A) is driving me crazy so I figured I’d reach out for some much needed help.
When I first received the computer, the drive was set up as the B drive, with a 1.44 MB floppy drive set up as the A drive. The 1.44 MB drive worked without issue, but the Fujitsu drive was DOA. I bought a new old stock M2551A drive off eBay but this new drive couldn’t read or format any known good 360 KB disks.
I loaded ImageDisk onto the computer and got to work trying to get the new drive working. I did the RPM test and it averaged 300 RPM per minute as expected.
I formatted a known good disk on my 5170’s 360 KB drive via DOS and used that disk for the alignment test. The drive failed the alignment test, so I removed the drive and adjusted the stepper motor and top head until all tracks were found and reported 18 hits for both head 0 and head 1.
The drive now appears to be aligned, but I still can’t read or format known good disks via DOS. I get the “data error reading drive A” when formatting or attempting to read a disk.
Am I missing something here? The controller that came with the computer is an LCS-6610F.
I’m using the original floppy cable that came with the computer which appears to be in good condition. The drive is set as DS1 and there is a terminator resistor on the drive. I also tried the drive on a Magitronic XT clone and had the exact same issue, so I’m assuming it’s not the controller or cable.
This is my first time attempting to do any work on a 5.25" drive, so any help would be very much appreciated!
Mike
. Apparently my 360K B: drive on my AT had little problem formatting and reading these disks as 360 KB, but the Fujitsu drive couldn't read or write to them well.