Installation and Hard Drive space

[jam man]

I've been trying to load up this laptop (with 4.9 if
it matters) which only has 750megs of storage...I
thought this should be enough, but I get errors while
installing: /usr: files system full.I hope I dont have
install skack (lol)! I have /usr partitioned at 620
megs (/ at 80)or so, and have chosen to install
minimal without ports (I have tried this in expert
mode and standard mode, but still recieve the same
error). Is there something wrong, or does the most
minimal installation of FreeBSD need more than 620megs
in /usr??? Any reply would be appreciated.