On 7/28/20 7:09 PM, Warner Losh wrote:

Both of the 2bsd tapes you found are from the days when Berkeley just sent patches to the 7th Edition out. The 2.8BSD tape was the first one to have a kernel that was bootable from the tape. The 2BSD tapes originally had 2 files on them. The first one was a binary copy of tar that ran on V7. The second was a tarball of all the rest. As you discovered, they shipped with a label like:
        Second Berkeley Software Tape
        May 10, 1979    TAR 800BPI

        %dd if=/dev/mt0 bs=1b skip=1 of=tar
        %chmod 755 tar
        % tar x

        10000 blocks
but the 2bsd.tar.gz file has just the second file.

The spensor_2bsd.tar.gz has a tar binary in it:
tar tvf spencer_2bsd.tar.gz | head
-rw-r--r--  0 0      0       24688 Feb 17  1980 tar
-rw-r--r--  0 0      10       3687 Feb 17  1980 tar.1
-rw-r--r--  0 0      10        456 Feb 17  1980 tar.ms
-rw-r--r--  0 0      10      15216 Feb 17  1980 install.ms
if you are looking for that pre-built. If you are looking to create a tape with tar on it to extract other tar tapes, you'd need to use a variation on the maketape.pl with a block size of 1 so the above dd will work on the target system...

Warner
OK. That makes sense. I'll just work with it as is on my v7 system.

Will

-- 
GPG Fingerprint: 68F4 B3BD 1730 555A 4462  7D45 3EAA 5B6D A982 BAAF