I am installing ubuntu clients with fai using this HDD_SINGLE disk config:
# Standard client formatting using setup-storage
#
# <type> <mountpoint> <size> <fs type> <mount options> <misc options>
disk_config disk1 disklabel:msdos bootable:1

primary         /       90%     ext4    rw,relatime,errors=remount-ro
primary         -       10%     swap    sw



After a succesfull installation, when someone wants to install ubuntu with a 
usb stick or cd on that pc , they getting an error in their installer disk 
config : cannot make ext4 partition.

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