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 V6FS Max Size 

This may sound random, but Wikipedia led me astray on my home work and I should try to prevent it for others.  The given max size in:
""The actual maximum was 8,847,360 bytes, with 7 singly-indirect blocks and 1 doubly-indirect block; PWB/UNIX 1.0's variant had 8 singly-indirect blocks, making the maximum 524,288 bytes or half a MiB.""
is incorrect.
According to the Version 6 Manual, http://wwwlehre.dhbw-stuttgart.de/~helbig/os/v6/doc/V/fs.html, the max size is 32, but cannot be larger than 16 bue to only storing 24-bits of filesize info in each inode rather than 25.  The 8,847,360 number obtained above was the result of calculating it with 4 byte addresses, which is obviously incorrect given the definition in the manual.   "