UNIX V4 tape successfully recovered: First ever version of UNIX written in C is running again

UNIX V4, the first ever version of the UNIX operating system in which the kernel was written in the then-new C programming ...
Fudzilla

Unix v4 clawed back from a 1970s tape

Computer History Museum software curator Al Kossow has pulled the contents from a more than half-century-old tape found at ...