my plan is to do a cleanses out all of my USB flash sticks and to emptied them by moving all file to a safe place and then to formatting all of them .and I almost thinking to make an multi-boot windows into one of USB drive but how to make a multi-boot windows into USB drive ? is there any free tool or utility for it ? and I would like to know exactly how many GB needed to makes one windows 7 -32-bit and one windows 7-64-bit and one windows xp-32-bit and one windows 10-64-bit ! and also I want to make a back-up for the system into a 4 GB flash drive which is for recovery if it needed !
I’ve check for a website which is for an official tool but it look like its down
any tutorial or recommendation are highly welcomed !