foursixnine

# install fsarchiver
# In Fedora/RedHat system's :: yum install fsarchiver sfdisk dd 
# In Debian/Ubuntu System :: apt-get install fsarchiver sfdisk dd 

DEVICE_TO_BACKUP=/dev/sdb # assuming /dev/sda is where you have booted ur primary OS
mkdir ./backup_with_fsarchiver # create a directory
cd ./backup_with_fsarchiver # enter into newly created directory
# only get the first 512 bytes  # read mbr in wiki for more details
dd if=$DEVICE_TO_BACKUP of=mbr count=1 bs=512 
sfdisk -d $DEVICE_TO_BACKUP > partition.sfdisk

foursixnine

perl -M'Digest::MD5 qw(md5_hex)' -e 'print md5_hex("`date +%d%m%y`")'