[TUHS] DEC RL01/RL02 RX01/RX02 Disk Image Creator

Paul Riley paul at rileyriot.com
Tue Jun 2 08:45:07 AEST 2020


Thanks for your help. You’ve correctly interpreted my question.

Is the disk image independent from the disk hardware? I’d assume that
different disks may have different block sizes etc, so the disk type may be

The target system is LSX, a cut-down version of V6 designed to run on the
LSI-11. There are very few system utilities in the standard build (no mount
for example). The second floppy is permanently mounted at boot time. I’m
interested in making source file floppies on my modern system to use on the
LSX, so I want to be able to create an image file from a source folder tree.


On Mon, 1 Jun 2020 at 9:05 pm, Clem Cole <clemc at ccc.com> wrote:

> On Mon, Jun 1, 2020 at 6:19 AM Paul Riley <paul at rileyriot.com> wrote:
>> Is there a Windows or Linux utility to create a disk image in any of the
>> above formats, from a local folder tree?
> What I think you are asking, is there a utility for a modern OS that will
> walk a local folder tree on my OS and create a new file whose structure is
> that of the file system for OS <insert yours here>.
> The issue is not the device as much as the OS and disk file layout.    As
> far as UNIX (or simh at the OS level) is concerned, the disk is just a
> linear array of bytes, addressed by blocks.  The physical format is not
> seen by UNIX.
> There are numerious utilities, as well as 'foreign file systems' that are
> available.   For instance, many Unix's can write RT-11 and MS-DOS format
> with standard utilities.   It really depends the OS.  That said,
> if the target OS is modern enough to support NFS or Samba, the easiest way
> might be export the file system from local system, and then running a
> simulated OS, 'mount' the file system.
*Paul Riley*

Mo: +86 186 8227 8332
Email: paul at rileyriot.com
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