I think that if you only have one partition on the USB hard drive marked as bootable, then it won't care what other partitions are there. Similarly with copying an ISO to a partition.
This might give you some ideas:
https://gparted.org/liveusb.php
tl;dr - you might need to repartition the USB hard drive, but you should be able to do that without data loss. (Always have a backup of critical stuff, of course.)
HTH a little. Good luck!
Cheers,
Scott.
This might give you some ideas:
https://gparted.org/liveusb.php
tl;dr - you might need to repartition the USB hard drive, but you should be able to do that without data loss. (Always have a backup of critical stuff, of course.)
HTH a little. Good luck!
Cheers,
Scott.