One thing to note with that image is that it was imaged with 2352 byte
sectors. I couldn't directly mount the image file on a Windows system. I
used ImgBurn to burn the image to a physical CD, then used ImgBurn to
read it back into a new image with 2048 byte sectors. I was then able
to mount that image file on a Windows system, and also attach the 2048
byte sector image file to a SIMH VAX running OpenVMS and mount it there.

It took a bit to figure out how to install DNAS V2.4 on OpenVMS from the CD.

First I copied DNASVAX.EXE from the CD to a scratch directory, for example:
$ COPY DUA1:[DNAS.OPENVMS]DNASVAX.EXE;1 DUA0:[SCRATCH]

Then run that self-extracting file DNASVAX.EXE in the scratch directory,
for example
$ SET DEF DUA0:[SCRATCH]
$ RUN DNASVAX.EXE

That should extract the backup file DNAS024.BCK into the scratch directory.

Then restore the installation file set from the backup file DNAS024.BCK,
for example:
$ BACKUP DNAS024.BCK/SAVE_SET DUA0:[SCRATCH]

Then run VMSINSTAL to install from the DNAS024 installation files
restored from the backup file DNAS024.BCK, for example:
$ @SYS$UPDATE:VMSINSTAL DNAS024 DUA0:[SCRATCH] OPTIONS N 

Among other things that installs copies of MNENG2.SYS, MNENG3.SYS,
and WWENG2.SYS to SYS$COMMON:[DECSERVER].

After doing all of that I was able to get a DECserver 90TL to boot
from the MNENG3 image. I haven't looked at it to see what operational
changes there might be between the MNENG1 image I already had and the
MNENG3 image.

Note that this only works on a DECserver 90TL with a 4MB SIMM
installed. With a 1MB SIMM installed there is only enough memory for
the MNENG1 image.

Apparently the MNENG2 image is a compressed version of the MNENG3
image. It took the DECserver 90TL over 6 minutes to download the MNENG2
image and then decompress it and initialize compared to only just over
1 minute to download the MNENG3 image and initialize. The only reason
to use the MNENG2 image is on a DECserver 90M which only has 1MB of
flash to store the image. A DECserver 90M with 4MB of flash can store
the MNENG3 image.

Example of successfully booting a 4MB DECserver 90TL from the MNENG3 image:

Local -901- Initializing DECserver 90TL 08-00-2B-A1-DB-53 FW V 2.0.0 HW 3.0

Local -960- Available Memory 4 Mbytes
Local -969- Requesting Specified Software MNENG3
Local -953- [MOP] Attempting to locate load host [ETHERNET]
Local -955- [MOP] Host AA-00-04-00-46-04 located [ETHERNET]
Local -956- [MOP] Requesting load from host AA-00-04-00-46-04
Local -903- [MOP] Loading from host AA-00-04-00-46-04
Local -904- Image load complete

Local - Telnet listener failed to bind socket
Local - LPD listener failed to bind socket
Local - No internet address - SNMP not enabled
Local -040- Software initialization complete


Network Access SW V2.4 BL50 for DS90TL

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