Setting up a SCSI2SD on HP 167xxA for CDROM and HDD targets

This quick guide contains instructions on how to setup, configure, burn, and launch an install from a SCSI2SD when inserted into an HP/Agilent Logic Analyzer on the 16700 series. A fresh install is always recommended, just like for other operating systems like Windows. I do not recommend imaging your previous SCSI drive, and then trying to burn it directly onto the card.

I’m using a 32GB SD card for this. You’ll need to play with the sector count field if you vary from this.

Setting up SCSI2SD

1. Using the SCSI2SD utility, configure (2) devices, one to function as the HDD, and one to function as the CDROM. I’m going to use Device 1 as my HDD, Device 2 as my CDROM.
2. For both devices, make sure the “Enable SCSI Target” is checked.
3. All values not specified are don’t care/defaults work.

4. For Device 1, set the SCSI ID to 6 and Device Type to harddrive.
5. Set the SD card start sector to 0, uncheck Auto beneath it.
6. Set the sector size to 512.
7. Set the sector count to 60356248. This will cover sector 0-60356247 for HDD.

8. For Device 2, set the SCSI ID to 0 and Device type to CDROM.
9. Set the SD card start sector to 60356248, uncheck Auto beneath it.
10. Set the sector size to 2048
11. Set the sector count to 488282

Make sure you save your configuration back to the SCSI2SD.

Writing the ISO to the SDCARD

You’ll need a linux box for ease of use. If you don’t know linux, but you’re doing stuff like this, then learn it.

Using linux, plug your sdcard into an sdcard reader/writer, and usb to a linux machine.
Determine using which drive your your card is showing up as. It’s probably the last entry.

dmesg | tail

[1892303.748444] sd 9:0:0:1: [sdd] 62333952 512-byte logical blocks: (31.9 GB/29.7 GiB)

Mine is showing up here as /dev/sdd.

using the linux dd command

dd if=./CDROMFILENAMEHERE.ISO of=/dev/sdd bs=512 seek=60356248 status=progress

IF YOU PICK THE WRONG /dev/sdX device you can easily trash the hard drive of the computer you’re using. CHECK AND DOUBLE-CHECK.

You can take a look at /proc/partitions and make sure your entry looks correct:

cat /proc/partitions

8 48 31166976 sdd

sdd is showing 32GB here….. I don’t have any other 32GB drives on my machine, this must be the right one.

sdcard back into the SCSI2SD, back into the 167xx

COMMANDS ON THE 167xx

“sea” to search

You should see PATH P0 as “SESCSI.6.0” (corresponds to your HDD setting above)
You should see PATH P1 as “SESCSI.0.0” (corresponds to your CDROM setting above)

“boot p1”, select N to interact with IPL prompt

and then follow the setup prompts……you basically just click next next next finish ala Windows here

That will install HP-UX 10.20 and the logic analyzer app to the HDD portion of the card.

At next boot, you’ll want to boot off of p0, because that’s your HDD.

UPDATE: Please see https://www.techtravels.org/2019/11/16700a-internals-w-scsi2sd-installed/ for images of the installed SCSI2SD. I’ve used this method probably a half dozen times across three different 167xx’s that I own.