-b - run program in batch mode, i.e without any prompt
-g auto - reinstall grub in client disk MBR (only of grub config exists)
-e1 auto - automatically adjust filesystem geometry for a NTFS boot partition if exists
-e2 - sfdisk uses CHS (cylinders, heads, sectors) from EDD (Enhanced Disk Device) (for non-grub boot loader)
-x - use full-duplex network with udpcast in multicast mode
-r - resize the filesystem to fit the partition size
-j2 - clone hidden data between MBR (1st sector, i.e. 512 bytes) and 1st partition
-sc0 - skip checking image before restoring.
-p poweroff power off clients when restoring is finished
--time-to-wait 30  - time to wait in seconds - the count starts when the first client connects
-l - language en_US.UTF-8
startdisk - operate on all partitions of the disk
multicast_restore - restore client using multicast
core_linux - image file to restore
sda - target disk to be overwritten