I download PMS from the Plex website, copied it to boot/extra, installed the package using installpkg /boot/extra/PlexMediaServer-*-unRAID.txz. The server was still online at this point.
Then I went to copy the plex updater from my desktop to /boot/config/plugins but when I went to \\tower\flash there was nothing there just an empty drive.
I shut the sever down via the webgui, pulled the usb and stuck it in my laptop. Windows said there is a problem with your drive do you want to scan. I clicked no and went to the usb via windows explorer and every thing is present.
BUT the server won't boot.