If you have a large E2B USB drive (up to 2TB), then you can easily boot from a backup ISO file and save the backup onto the same E2B USB drive (or any other connected drive or network drive).The E2B USB drive can be made using the 'Gear wheel' button on Make_E2B.exe so that the MBR partitions are a follows:Ptn1: 127GiB NTFSPtn2: 1GiB FAT32Ptn3: NTFS (remaining space)Ptn4: (must be unused for E2B