Press SELECT+START... it's a very basic progress status, but much better than nothing
Nope... also use a different thread for that kind of questions. This thread is for webMAN MOD commands.
Convert the game or files to multi-part ISO (*.iso.0, etc) and you can mount it on FAT32...
multiMAN mark with an underscore prefix the folders of games containing split files (*.66600, etc)
I don't recall if multiMAN requires or not the underscore to merge the files...
If the folders do not have the same name, webMAN MOD will copy the source because it detects them as different games.
webMAN does not support games with split files. However when a game folder with files larger than 4GB is copied to USB, it will split the large files as *.666**
Nope. Only FAT32 and NTFS for external drives.
I haven't used a Raspberry, but a quick search in Google suggests to use the following command to format in NTFS:
sudo apt-get install ntfs-3g
sudo mkfs.ntfs /dev/sda1 -f -v -I -L untitled