alright, linux is a tricky OS, but its all we got on the box. your problem is obvious: your current user cannot write to the drive. its a retarded bitch of an issue with linux. all the open source bloviating about 'user security' can go out the window to me, because most people are the *only* users logging into the system. but, i digress.
let me start by saying reformatting your drive should have nothing to do with this problem - it is straight up a matter of user permissions.
if you want to have root access from the get go: reinstall your linux, and when it asks if you want to automatically log on, select NO!NOTE THAT YOU *WILL* NEED A KEYBOARD IF YOU DO THIS SO YOU CAN TYPE IN YOUR ROOT NAME AND ROOT PASSWORD (ROOT / ROOT BY DEFAULT)personally, due to ram limits, i stick with DSL, so my input may not help you at all.
on DSL, do the following to move files from your loopback to your F partition:
run the program emelfm in root mode (which is an option off the bat in DSL)
(a sample of what emelfm looks like)
from this 2 panel file manager, you can browse to one file location on the left panel, and on the right panel, browse to where you want to move files to on your box partitions, provided they are mounted by default.
assuming your partitions are mounted, in your right panel browse to (on DSL mind you)
.../mnt/hda55 (being your F partition)from your left panel, you can now highlight your files, and
move them into your respective F drive directories. an example for me is, i downloaded a video file to
.../dsl/home and i want to move it
out of the loopback file system into my main partitions so i can view it in XBMC,
i keep my left panel in
.../dsl/home, browse my right panel to
...mnt/hda55/VIDEO (F partition, VIDEO folder) and select
MOVE from the middle command menu, and my file is
moved from the loopback into my selected partition/folder.
after this is done, i properly reboot my system thru the DSL reboot option, browse to my video folder on XBMC, and watch my freshly downloaded movie (pr0n, napoleon dynamite, plan 9 from outer space, whatever it may be...)
i use this for downloading music torrents, video torrents and single files like pictures, etc.. to be able to download files to begin with, you must be sure your web browser or torrent application has root access! in DSL, to open firefox in root access, you open a terminal window,
"sudo " into root, then run the command "firefox". once FF is in root mode, test download a picture. it will download into
.../dsl/home/to mount your drives, open your FSTAB file in emelfm in root mode, edit your partitions to AUTO, and reboot. once rebooted, repeat my directions for moving files, as your disk partitions will now be mounted and writable thru root mode.
this is in DSL! i know nothing of gentoo or other linux systems! i actually have taken a liking to DSL and am finding it very easy to use. we dont get a whole lot of linux support here, but whatever i know about, i will always help with. keep in mind however,
a linux guru, i am not!