2008/1/8, Mehdi Dogguy <mehdid@gmail.com>:
> Do you use SquashFS on your LiveCD ?
> It's  usually the case  on LiveCDs  ... but  squashfs is  a compressed
> read-only filesystem  and I think we don't  want to have such  a fs on
> our usb key.

It's SquashFS with LZMA compression plus AUFS (UnionFS redesigned from scratch).
http://en.wikipedia.org/wiki/UnionFS

The read-only filesystems are in fact .lzm files which are mounted as
loop-device. As a matter of fact the filesystem where they really
reside doesn't matter much.
I won't give you further information though because, as I'm not fond
of the idea of making a ro filesystem writable, I've not spent much
time on the topic and therefore can't be sure to properly answer.


 ---

Adrien Nader