To get KDE4 on your Mandriva Flash, you need to copy the KDE4 module
(kde4.sqfs) and a boot file update (initrd.gz) on your Mandriva Flash
USB key.

First, from your current Linux distribution, make sure your Mandriva
Flash partition is mounted on /media/MDVUSBROOT. It should be
automatic on most recent desktops, else it can be done manually:
- mkdir /media/MDVUSBROOT
- mount /dev/disk/by-label/MDVUSBROOT /media/MDVUSBROOT

Then, copy the kde4.sqfs and initrd.gz in /media/MDVUSBROOT:
- mkdir /media/MDVUSBROOT/.loopbacks/modules
- cp kde4.sqfs /media/MDVUSBROOT/.loopbacks/modules
- cp initrd.gz /media/MDVUSBROOT/.boot/usb/
- umount /media/MDVUSBROOT

Your Mandriva Flash is now ready to run KDE4!
(just select the KDE4 session in the KDE display manager)