hard linked folder (files) with windows

to link a folder to another one "the hard way" (e.g. to link "%AppData%\Local\Google\User Data" to another location) us the cmd and option "mklink /J [fromfolder] [tofolder]"
J = Junction

(for files use /H instead of /J)

adduser to sudo group

adduser <name> sudo

user <name> has to login again for using the sudo command!

mount cdrom

that easy:
mount -t iso9660 /dev/cdrom /media/cdrom