Thanks for the clarification and information. I will keep these things 
in mind.

Regards,

Will

On 12/5/15 1:53 PM, Clem Cole wrote:
> You are most welcome -- BTW:  the first name is Clement, my last is 
> Cole and my friends call me Clem.
>
> One thing to remember... when woring with older versions of UNIX its 
> not a good idea to be modify in the a partition that is live. Later 
> versions were better about keeping the buffering system of your way.
>
> Ken wrote the standalone tools for V7 so you do those sort of low 
> level things from it.
>
> Best wishes.
>
> Clem
>
> On Sat, Dec 5, 2015 at 2:47 PM, Clem Cole <clemc at ccc.com 
> <mailto:clemc at ccc.com>> wrote:
>
>     Ah I gather you are running on rp0 (ie it's mounted as root).
>
>     Do the dd from the standalone system or boot from an rk05
>
>     On Sat, Dec 5, 2015 at 12:44 PM, Will Senn <will.senn at gmail.com
>     <mailto:will.senn at gmail.com>> wrote:
>
>
>
>         On 12/5/15 11:26 AM, Clem Cole wrote:
>>
>>         On Sat, Dec 5, 2015 at 12:03 PM, Will Senn
>>         <will.senn at gmail.com <mailto:will.senn at gmail.com>> wrote:
>>
>>             I am unable to boot from the RP06 disk that I installed
>>             into the boot block onto via:
>>             dd if=/usr/mdec/hpuboot of=/dev/rp0 count=1
>>
>>         ​ Doing this from memory as couple of issues:
>>
>>         1.) do an ls -l of /dev/*rp*  you need to use the raw
>>         (character) driver not the blocked driver
>>         2.) I believe the hp/rp driver is partitioned.   Make sure
>>         you use the proper partition.​
>>
>>
>         Clem,
>
>         I tried it with the raw device and partition 0. Here are the
>         devices and my approach:
>
>         # ls /dev/*rp*
>         /dev/rp0
>         /dev/rp3
>         /dev/rrp0
>         /dev/rrp3
>
>         # /etc/mount /dev/rp3 /usr
>         # dd if=/usr/mdec/hpuboot of=/dev/rrp0 count=1 conv=sync
>         0+1 records in
>         1+0 records out
>         or
>         # dd if=/usr/mdec/hpuboot of=/dev/rrp0 count=1
>         0+1 records in
>         0+1 records out
>
>         # sync
>         # sync
>         # sync
>         CTRL-E
>
>         Simulation stopped, PC: 002306 (MOV (SP)+,177776)
>         sim> q
>         Goodbye
>
>         TERRA:bostic-v7 wsenn$ pdp11 nboot.ini
>
>         PDP-11 simulator V4.0-0 Beta        git commit id: 0f43551d
>
>         Disabling XQ
>
>         Hangs either way!
>
>
>

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