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OpenVMS Hobbyist Program | VAX Systems Forums | Emulated VAX Forum
Author Vax 4000/200 VMS 5.5-2 Save_Set to SimH problem

Posts: 12
Joined: 01.03.12
Posted on March 30 2012 10:47

I have been trying to transfer a Vax 4000/200 VMS 5.5-2 actual system to a SimH virtual machine and been having problems.

Here is what I have done so far. On the actual Vax system I created a Save_set on its spare harddrive. Then I FTP'ed out the file as a binary to a Windows PC. I took the save_set vaxdisk1.dat and created a ISO image of it and then mounted it as a rq2 CDROM to my simH. The OpenVMS CDROM backup and restore utility is mounted on rq3. I boot into the rq3 and use its utility to resore the save_set from rq2 CDRom to rq0 disk0 or the simh.

I had to create the ISO image of the save_set with the Linux terminal command dd. Here is the command:

$ dd if=vaxdisk1.dat of=vaxdisk1.iso bs=2k

Note:I am aware of the 512 block size of the FTP binary transfer to Windows therefore I chose the parameter bs=2k. Someone online suggested this.

I am able to boot into SimH with the following vax.ini file and use the backup/restore utility from OpenVMS:

; Load CPU microcode
load -r /home/X/software/simh/BIN/ka655x.bin
; Attach non-volatile RAM to a file
attach nvr /home/X/software/simh/BIN/nvram.bin
; This virtual machine has 64M memory
set cpu 64m
; Define disk drive types. RA92 is largest-supported VAX drive.
set rq0 ra92
set rq1 ra92
set rq2 cdrom
set rq3 cdrom
; Attach defined drives to local files
attach rq0 /home/X/software/simh/BIN/d0.dsk
attach rq1 /home/X/software/simh/BIN/d1.dsk

; Attach the ISO images of drives to its file (read-only)
attach -r rq2 /home/X/software/simh/BIN/vaxdisk1.iso
attach -r rq3 /home/X/software/simh/BIN/vaxvmscd.iso

; Attach the CD-ROM to its file (read-only)
;attach -r rq5 /home/X/software/simh/BIN/vaxvmscd.iso

; Disable unused devices. It's also possible to disable individual devices,
; using a construction like "set rq2 disable" if desired.
set rl disable
set ts disable
; Attach Ethernet to a network interface
set xq mac=08-00-2B-AA-BB-CC
attach xq eth0
; Now start the emulator
boot cpu

So, I have 2 disk drives and 2 CDRoms attached to my SimH
Disk0 rq0 Main disk that I want to copy the save_set to.
Disk1 rq1 Spare drive
CDROM rq2 has my save_set vaxdisk1.dat
CDRom rq3 has the OpenVMS utility on it

I am able to boot and get to the utility prompt and do the backup command from the OpenVMS utility:

Here is the command:
$backup dua2:vaxdisk1.dat/save_set dua0:

but I get the following error after a long time of waiting:

**********error message from termanal window**************
$ backup dua2:vaxdisk1.dat/save_set dua0:
%BACKUP-F-NOHOMEBLK, no valid home block found on DUA2:
If you do not want to perform another standalone BACKUP operation,
use the console to halt the system.

Sooooo ---->

1) Why does it still have a hard time reading the binary blocks?

2) I saw suggestions on some utilities re-aranging the block size but have no clue how to use this utility. Do you have to run this utility in OpenVMS itself as a VAX command. So, I went ahead and booted into my fresh installed OpenVMS Vax and I tried to mount the ISO image and got a error message mounting it. It said that the ISO is not Files 11 file system. Yes I know that but how do I transfer this file into OpenVMS to reconvert the block size?

Side note: I did create a full OpenVMS system install into SimH from the online documentation and I did not have a problem with the OpenVMS CD save_set image installing to Disk0 of SimH. I got to boot it and configure minor stuff. So that worked from the ISO image. Whats the difference in that?

Thanks in advance for all the help.
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