xubuntu - Increase persistent Casper RW file - Ask Ubuntu

completely new linux, decided install xubuntu onto usb using universal usb installer. have 64gb usb stick. set up, booted live - persistent , seemed alright until decided install basic programs. realized 4gb persistent file not enough. decided try , resize partitions , 1 can see fat32 partition cannot unmount because 'the cd rom busy'. how increase size of casper -rw file (file or partition because can't see in gparted or fdisk -l?) or there way create persistent partition , resize current one? appreciated. in advance

it looks not possible make casper-rw file greater 4gb because of limitation of fat32, however, not difficult make casper-rw partition.

note: may want backup data before start doing this, data can lost while partitioning, copying, etc.

this outlined in method 0 of https://wiki.ubuntu.com/liveusbpendrivepersistent

you'll have make use live usb in order resize partition. after you've booted other live usb,

1. open gparted
2. resize fat32 partition of original usb drive small can be
3. make new ext4 partition named "casper-rw" (without quotes)
4. click "apply"

now have copy data over

sudo dd if=/path/to/casper-rw of=/dev/sdx 

where sdx new partition created (also add "status=progress" if you're impatient , want see progress me)

after it's done copying, delete original casper-rw file , should go.