just tried to upgrade my testbed RADIUS 4.8 server to 4.9RC3

[Diana Eichert]

and I get the dreaded message

Write failure on transfer! (wrote -1 bytes of xxxxx bytes)

after searching through the various archives it appears this is somehow
realted to sysinstall getting confused re: mountpoints.  However no one
seems to really have a fix for it.

I've been running FBSD since 2.1.6 and had never seen this error before
myself.

it's not the easiest system to work on, RLX blade server, serial console
only, no floppy or CD-ROM, PXE booted the original 4.8 install on it.