For people who cannot get persistency to work using the existing guides (like myself), here is another try which works for me (for LinuxCoin install):
You need:
USB thump drive
Windows PC
linuxcoin-vX (whatever version you want, get it here:
http://forum.bitcoin.org/index.php?topic=7374.0)
BOOTICE (get it here:
http://www.pendriveapps.com/bootice-partition-flash-drive-edit-boot-sector/)
unetbootin (get it here:
http://unetbootin.sourceforge.net/)
Creating 2 partitions:A. Put the USB thumbdrive in the Windows PC
B. Format the USB thumbdrive FAT32
C. Start Bootice
(Make sure you have selected the USB thumbdrive. Don't mind the size in this image)
D. Select Parts Manage
E. Select ReFormat USB disk
F. Select USB-HDD mode (Multi Partitions) and click Next
G. Enter 1024 in the first field (Partition1) and select FAT32 on Partition1 and Partition4, leave the rest as it is and click OK.
H. It will ask you to confirm the reformat of the partitions, click OK if you agree and finally you will get a confirmation box telling you all is ok.
I. Close this tool.
J. Start Unetbootin
K. Select to use an ISO
L. enter 1024 in the field for persistence
M. Click Install and wait, when it offers to reboot: exit.
Creating persistency:1. Take the USB thumbdrive from the Window PC and put it in your soon-to-be Linux miner box
2. Boot, select persistence mode
3. When booted, open a root terminal, type:
sudo df
You should now get a list of your drives.
You should see /dev/sda2 mounted under /media/7A6D-A74F (or something like that)
sda is the drive, sda2 is the partition
4.
umount /media/7A6D-A74F
mkfs.ext4 /dev/sda2 -L live-rw
5. It will not give a confirmation, now shut down the system and start it, selecting Persistence mode.
6. After rebooting, open a root terminal and do:
df
look at sda2, it should say: live/cow
For me it reads:
/dev/sda1 = /live/image
/dev/sda2 = /live/cow
Now you have persistence on your USB thumbdrive!
Note: I am obviously no Linux expert, or an expert in anything whatsoever, that is why I had to write this down, so I could do it again every time I need to. Please don't hesitate to correct me on anything, my girlfriend doesn't either...