UNIX Fourth Edition
Here you can find the contents of the UNIX v4 tape ready for bootstrapping, including a tar file of the filesystem.
unix_v4.tap is the original tape file in simh format
bootstrap are the first 38400 bytes of the tape
disk.rk is the rest of the tape, an RK05 image
unix_v4.tar is the filesystem extracted
install.ini is an ini file for simh to install the system
boot.ini is an ini file for simh to boot the system
At first I extracted the disk image manually from the tape, which resulted in bootstrap and disk.rk . These are really nothing more than the first 38400 bytes of the raw tape content and the rest. Because unix_v4.tap is block based, one first has to strip it of its block sizes to get the raw content.
Actually it's easier to just use the tape as it is and install a new system from it.
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