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Boot disk with greaseweazle

Drashiel

New Member
Joined
Nov 21, 2025
Messages
6
Hi,

After several months of searching, I found a pretty decent IBM 5160 at the correct price and bought it. This unit doesn´t have a hard drive, but 2 Tandy DD disk drives.
Time to put this little boy on working condition, I have a greaseweazle connected to a TEAC 5.25 HD drive. Using greaseweazle I wrote on a DD 5.25 floppy a MS-DOS boot disk. When I try to use to boot the 5160, it says that there is no system disk, replace and press any key.
I think that Tandy drive is working because when I try to boot with a MS-DOS Spanish boot disk, the message is written in Spanish, so my assumption is a problem with the boot sector.
I tested on a virtual machine the images used and can boot a virtual computer, so it looks like the images are correct. Also, greaseweazle checks for written sectors, and there are no errors here.
Could it be the different drive heads size the culprit of this issue?
Hope anyone can give me some light here...
Thanks,
Regards.
 
Sometimes HD drives have a hard time writing on a disc that has already been written on a DD drive. The DD drive will pick up the old DD data and not the thinner strip of data from the HD drive.

One thing you could try if you don't care about the disc contents would be to try to demagnetize the disc by holding a strong magnet near it and then re-writing.

Another would be to temporarily unplug one drive from the 5160 and connect it to the Greaseweazle to do the write. (preferrably the one you're going to boot from, in case the drives aren't in strong alignment with each other. I have a Kaypro 2X where a disc written in drive A can't be read by drive B or vice versa)
 
Hi Hak,
I think that maybe set the Drive as 40 tracks instead of 80. I'll do more tests and last option Will be remove the tandon Drive and use with greaseweazle.
 
The GW can wipe a disk so that it can be written with an 80-track drive and read with a 40-track. It usually works.

You must make sure when writing the disk that you have step 2 set.
 
I feel a bit stupid... Mistakenly marked the drive as a 40-track, but it is an HD drive. After marking it as 80-track, the disks are fine, and I´m able to boot from floppy.

Thanks to all for your suggestions.
 
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