I was at UCB during this time. Very exciting! Here's a story people may not know:<p>The dump program, once the FFS was deployed, had not been modified to backup the last fragment of a file (because it was smaller, possibly than 4k). There was a disk crash on the VAX with the BSD source code and the disk company (Ampex, I think) came out and meticulously scrapped the bits off the disk, so CSRG could recovered the source code. There was no complete backup of it anywhere else.<p>That was a fun, early lesson in "test your backups".