I have a bootable USB Linux thumb that I want to backup to have a safety copy. The thumb is a UEFI 64GB drive with several partitions; 1) FAT32 2) ext4 (boot) 3) linux-swap 4) FAT32. I bought another 64GB USB thumb to use as the backup.
Original is 57.33GB formatted, and the new one is slightly smaller 57.30 formatted. I was going to copy 1-to-the-other, but both an app as well as DD complain that the target drive is smaller and abort. I made an IMG of the original, and then tried to use Balena Etcher to flash the IMG to the target, but again the complaint. Making an IMG of each partition and then flashing only results in the whole target becoming that partition only. Shrinking a partition only leaves an unallocated gap, and no progress. Is there a solution to my dilemma that I haven't thought of?
There's more... With a bootable Linux USB thumb that has multiple partitions like this, what tells the OS the mount points to use? Thanks.