Question about write failure during install

[Rick Hubbard]

I am tryin got install FreeBSD on a 380D IBM Thinkpad.  I get my three
floppies to load get a write failure, filesystem is full error when the
about 40% of the load is done from the first .iso disc.  The /mnt/usr file
is set to 84 MB by default and the swap file is 115 MB.  I have tried to
resize the mnt/usr/ file but can't figure out how to do it.

The computer has a 2GB HD and 80MB memory

Thanks,
Rick