4.9 RC2/swap file

[Michael Keener]

hello all
While attempting to perform a standard install, when commiting to write to the Hard drive I get "unable to create swap file-press enter or space to continue" but of course I tried to continue , completed the install but on initial boot 4.9 halted  "with bad super block  magic number wrong"
I have only discovered this error in 4.9 
is this a known bug?
regards/ Semper Fi
Mike