I did some work on a Centos LiveUSB system. I created some files etc.
I later moved to a complete linux install and want to read the previous LiveUSB filesytem straight from the usb key.
From my research, the LiveUSB seems to use a Union filesystem.
I think these are the files that form the data of the filesystems.
[root@hostname ~]# ls /mnt/hgfs/H_UsbKey/LiveOS/ -lah total 2.8G drwxrwxrwx. 1 root root 0 Dec 16 04:32 . drwxrwxrwx. 1 root root 0 Dec 31 1979 .. -rwxrwxrwx. 1 root root 28K Dec 16 04:32 livecd-iso-to-disk -rwxrwxrwx. 1 root root 12K Dec 15 07:32 osmin.img -rwxrwxrwx. 1 root root 4.0G Mar 9 23:56 overlay-LIVE-C060-D3BD -rwxrwxrwx. 1 root root 1.6G Dec 15 03:41 squashfs.img