emanuel stiebler emu at e-bbes.com
Sun Aug 15 07:32:57 CDT 2021

On 2021-08-14 12:18, Douglas Taylor via cctalk wrote:
> I ran into a YouTube video, that it is 5 years old, titled "Ultrix-11
> 3.1 on an emulated PDP-11/73" and I found it very interesting.
> It shows installation of Ultrix-11 under SIMH.  The fellow steps through
> the installation process and appears to be quite knowable.
> I wanted to replicate it but couldn't locate the *.tap file used in the
> video that was an image of the bootable TK50 distribution.
> Bitsavers and tuhs.org have Ultrix-11 files, but not the bootable tape
> image.
> Anyone know where the tape image is located?

The "install tape" was distributed as a series of  files which have to
be written to a real tape with different block sizes. So if you have a
directory with more than one .tap file, look for a shell script to write
those to a tape drive ... There you will see, which file made the real
boot tape ...

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