I’ll chip in my 5 cents and say that i’ve had good experiences with PUTR, a DOS 
based utility can can read, write, and mount a lot of DEC formats. I quite 
successfully used it to make myself a few bootable RX50 floppies for my 11/23.

Of course, YMMV, and you’ll need a DOS/9x machine to use it, but from my 
experiences, it’s really quite powerful, and though i haven’t used it for disk 
imaging, i’m pretty sure it supports that too.

Josh.

> On May 14, 2023, at 5:12 PM, Chuck Guzis via cctalk <cctalk@classiccmp.org> 
> wrote:
> 
> On 5/14/23 06:58, Warner Losh via cctalk wrote:
>> On Sun, May 14, 2023, 7:47 AM Chris Zach via cctalk <cctalk@classiccmp.org>
>> wrote:
>> 
>>> Hi!
>>> 
>>> Well, after a good bit of work I have finally gotten my Compaq XE4000 up
>>> and running with Windows 98, the BIOS all set, a new battery, and of
>>> course a 1.2mb 5.25 floppy that seems to be working.
>>> 
>> 
>> I'd avoid teledisk.  I'd look at Dave Dunfield's ImageDisk. It produces
>> those img files directly.  It's linked from
>> http://dunfield.classiccmp.org/img/index.htm
> 
> ImageDisk may not be the answer either.
> 
> A problem that crops up if you're trying to run TeleDisk under a Windows
> command prompt.  That messes with the timing.  TD is intended for use
> under real-mode DOS.  That is, if you're in windows, shut down to a DOS
> command prompt.  Do NOT assume that the Windows command prompt out of
> the GUI will do the job.  Or just boot MS-DOS.
> 
> There are certainly Linux programs that can also read RX50 floppies.
> 
> If you want a brute-force read every sector on an RX50 program, I can
> pass that on to see if it works better for you.  It knows the format of
> an RX50 disk, so doesn't have to guess.  I use it myself (the author of
> TeleDisk), though increasingly, I'm relying on MCU-based solutions to
> handle floppies.
> 
> I haven't touched TD since 1999, when we sold the rights to the program.
> It blows my mind that it's in use 24 years after its last incarnation.
> 
> --Chuck
> 
> 

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