How to create a bootable usb if I want to keep the partition tables of my usb?A simple dd on the subpartition (e.g /dev/sdb1) is not going to work.Example: I have the partition# lsblk /dev/sdbNAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTsda           8:0    0 20.0G  0 disk sdb1        8:1    0  4.0G  0 part sdb2        8:2    0  16.0G  0 part I want tohave a live OS on sdb1have data on sdb2 
How to make a USB bootable if there is a partition table that have to be kept
partition;dd;live usb;bootable