Re: Digest for zoomfloppy-users@googlegroups.com - 1 update in 1 topic

[John Saller]

I never had any luck with imgcopy with a 1581! 

I use cbmcopy -w -d 1581 -fD 8 .test.d81 or

Read a file called cbmfile from drive 8 and store its binary value into the file file.bin, automatically selecting the fastest transfer method 

cbmcopy -r -d 1581 8 cbmfile -o file.bin 

     

On Tue, Oct 14, 2025 at 6:42 PM <zoomflop...@googlegroups.com> wrote:

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• I can't get imgcopy to work with a 1581 drive - 1 Update

I can't get imgcopy to work with a 1581 drive

Dan Gahlinger <dgah...@gmail.com>: Oct 14 04:33AM -0400 I've tried Linux, Raspberry Pi and Windows 11 - using latest opencbm code from github cbmctrl and d64copy both work perfectly fine with a 1541 drive and cbmctrl works with the 1581 as well but I can't get imgcopy to work this is what I get on linux/raspberry Pi   imgcopy -drive-type=1581 8 disk.d81 [Warning] growing image file to 3200 blocks Segmentation fault (core dumped) imgcopy --drive-type=1581 8 disk.d81   I thought imgcopy could work with the 1541 as it lists the drive type, but when I tried, I got this: imgcopy -v --drive-type=1541 --end-track=35 8 trydisk.d64 [Fatal] invalid drive or image type   And on windows 11 it starts up, but the drive stops spinning, with the light still green and the program exits without creating the image, the zoomfloppy LED continues to flash though   imgcopy -v --drive-type=1581 8 disk.d81 [Info] drive 08 (CBM-1581) [Info] set transfer struc. [Info] open source disk. [Info] open destination. [Warning] growing image file to 3200 blocks [Info] open imagefile ok. disk.d81 [Info] copying tracks 1-80 (3200 sectors)   C:\opencbm-0.4.99.104\amd64>   -- Greetings from somewhere in the space-time continuum,   Dan.

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[John Saller]

I use 1581CP54 for full 1581 disk copies which is a pain but it is fast and accurate.

[John Saller]

I never had any luck with imgcopy with a 1581! 

I use cbmcopy -w -d 1581 -fD 8 test.d81 or

Read a file called cbmfile from drive 8 and store its binary value into the file file.bin, automatically selecting the fastest transfer method 

cbmcopy -r -d 1581 8 cbmfile -o file.bin 

[Dan Gahlinger]

well I have a reliable workaround, but it uses the greaseweazle rather than zoomfloppy
so you'd need a greaseweazle (v4 or newer) and you'll need a PC 720k floppy drive and cable

the command I use is:

gw read --tracks "c=0-81:h=1" --retries 10 --revs 5 --format commodore.1581 3disk200.d81

the retries and revs give it the best possible chance to read data from the disk
the "h=1" tells it to only read head 1, as it's a 720k disk not a 1.44MB
if you try it without this, image creation will fail.
this seems to be just how greaseweazle does it.

I'll give your cbmcopy commands a try as well,
I'm also going to try imgcopy with a 1571 drive

I used to use imgcopy with 1541, 1571 and 1581 in the past, long ago, but don't know why 1541 and 1581 are failing now.
I'm curious to see what happens whey I try with a 1571 drive these days

would be nice to figure out what's going on with it

and yeah, 1581CP54 is highly problematic, it's old DOS, so virtualbox, dosbox, QEMU, PC86, etc
but then you have to configure all the USB passthrough stuff, which is a pain
or an old DOS PC, which is equally problematic.

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[Dan Gahlinger]

I finally got zoomfloppy to work with a 1581 drive

John, try this out, here's the command I used:

imgcopy -v --no-warp -ts2 --drive-type=1581 8 testing.d81

still outstanding:

as of now, I can't find any way to create a D71 image with zoomfloppy
I tested with  a 1571 drive and I get this error message:

[Fatal] invalid drive or image type

it's the exact same error as with a 1541 drive
this is using --drive-type=1541 or --drive-type=1571
even using that same command line from the 1581 and changing the drive type, same fatal error

so hopefully Spiro can give some guidance on what I'm doing wrong, etc

Dan.