i have a 32 gigs usb drive and, given that most isos are around 2-5 gigs, it’s such a shame to see nearly 30 gigs of perfectly good free space go to waste whenever i need to use it as a bootable drive. is there any way i can burn an iso image to the usb drive while still being able to use its free space?


Shrink the partition with the iso dd’d into it and partition and mkfs the resulting space.
i thought about doing that, but i wasnt sure if that would get recognized as a bootable device (especially on my pc which is still has a bios instead of uefi). ill test it and come back to say if it worked or not
Alternatively, maybe just making a new folder on the USB’s root and putting stuff in there would suffice?
Also if the OP uses Ventoy, from my tests you can put whatever in the partition for the ISOs without interfering in Ventoy’s functionalities.
i typically dd the iso to the usb drive, so thats sadly not possible
wrt ventoy, ive been avoiding it given some security concerns that were raised a while ago: https://github.com/ventoy/Ventoy/issues/2795