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I created a Live Ubuntu-12.04 (64 bits) USB pendrive with USB disk creator from Ubuntu-11.10 (Linux Mint 12). The USB stick is 8GB large. I followed method 0: thus deleted casper-rw file, emptied the trash, resized the bootable partition and created a 4GB ext3 partition labelled casper-rw.

I booted the USB stick on a Dell desktop Core 2 machine. Booted fine. But the casper-rw partition is not mounted. Only the bootable partition /dev/sdf1 is.

$ mount
/cow on / type overlayfs (rw)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
/dev/sdf1 on /cdrom type vfat (ro,noatime,fmask=0022,dmask=0022,codepage=cp437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
/dev/loop0 on /rofs type squashfs (ro,noatime)
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)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
gvfs-fuse-daemon on /home/ubuntu/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=ubuntu)

I can mount it manually though:

$ sudo mount /dev/sdf2 casper/
/dev/sdf2 on /home/ubuntu/casper type ext3 (rw)

$ df -h
Filesystem      Size  Used Avail Use% Mounted on
/cow            1.9G   84M  1.8G   5% /
udev            1.9G  4.0K  1.9G   1% /dev
tmpfs           766M  820K  765M   1% /run
/dev/sdf1       3.3G  797M  2.5G  24% /cdrom
/dev/loop0      660M  660M     0 100% /rofs
tmpfs           1.9G  100K  1.9G   1% /tmp
none            5.0M  4.0K  5.0M   1% /run/locdk
none            1.9G  176K  1.9G   1% /run/shm
/dev/sdf2       4.0G   73M  3.7G   2% /home/ubuntu/casper

my fstab is very limited:

$ cat /etc/fstab
overlayfs / overlayfs rw 0 0
tmpfs /tmp tmpfs nosuid,nodev 0 0

Does anyone know if this method is supposed to work with 12.04? If so, what did I do wrong?

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