LiveUSB operational issues

Question

I'm running UNETBOOTIN on my USB stick. Ubuntu 10.04.02 is running OK, but I have two usability questions:

1) Is there a way to enlarge the persistent storage now that I've found need for more than 100MB originally allocated?

2) How do I mount the actual "Windows" side of the stick? I can't seem to find something specific in mount:

ubuntu@ubuntu:~$ mount | sort
aufs on / type aufs (rw)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
/dev/loop0 on /rofs type squashfs (ro,noatime)
/dev/sda1 on /media/SYSTEM type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096,default_permissions)
/dev/sda2 on /media/OS type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096,default_permissions)
/dev/sdb1 on /cdrom type vfat (ro,noatime,fmask=0022,dmask=0022,codepage=cp437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
gvfs-fuse-daemon on /home/ubuntu/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=ubuntu)
none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
none on /dev/shm type tmpfs (rw,nosuid,nodev)
none on /dev type devtmpfs (rw,mode=0755)
none on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
none on /proc type proc (rw,noexec,nosuid,nodev)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
none on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /var/lock type tmpfs (rw,noexec,nosuid,nodev)
none on /var/run type tmpfs (rw,nosuid,mode=0755)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev)

Gnome's Places menu only lists SYSTEM (mostly the r/w Casper filesystem portion of the LiveUSB stick) and OS (my local Windows hard drive). Both are visible as fuseblock /sda devices, so there's nothing to un-hide.

Answer 1

Answer to the first part:
It's a good idea to backup the image first.

Add 500MB of zeroes to the end of the image casper-rw. Make sure you use >> (append) and not > (overwrite).

dd if=/dev/zero bs=1M count=500 >> casper-rw

Resize the filesystem to cover the entire image file

resize2fs casper-rw

That should be it.

Answer 2

For the first part, I agree with bbaja42's answer. If you have space on the stick, consider adding more than 500 MB; it fills up faster than you might think.

Second part:

/dev/sdb1 on /cdrom type vfat

This is the stick's main partition, despite the name of the mount point.