Check out Ventoy! Unless you need a single ISO on the drive, it's just something you install to it and then copy and paste ISOs to the folder on it. No flashing needed, it runs them for you. I've got 128GB drives almost filled with every ISO I could possibly want.
Also worth noting, you should create file named .ventoyignore in the directories with other files. Otherwise Ventoy searches everything which slows it down.
Note that some devices aren't able to correctly mount the second partition.
I guess this is because the first partition is used to boot ventoy, while the second partition holds data and some devices (e.g. printers) won't mount the second partition.
PS: I nearly wasn't able to hold a presentation because of this, luckily a second stick/phone/copy on web storage saved me, iirc.
This only ever really applies to devices without UIs or otherwise embedded OSs, and personally I wouldn’t trust a drive with more than a handful of files in such a device anyway.
I've definitely done that before! I'll use a Ventoy as a portable OS to test things I don't want to break my main system, then shut it down to reset to normal. It's nice to not need a second stick to bring in or save other files while doing that.
I need this, my local dollar store sells 32GB USB2 key for $5, I have one for MX, MX-AHS, MX32bits, antix, etc I have multiple 32GB keys with just 1 or 2 GB used, I will check this ventoy!
It would definitely be worth checking out, I wiped all of my individual sticks after I started using it. Also, I don't know if the speed would make much difference in your use case, but SanDisk 32GB USB3.0 drives are usually less than $8.
Those small USB drives are too slow anyway, often limited to USB 2.0 interfaces or slow flash modules. I've switched over to an SSD specifically because of how slow booting and installation is from a standard 10-year-old USB stick.
Put your SSD into this case and enjoy proper CD/DVD/BluRay emulation, multiple VHDs and much more.
EDIT: Not an ad, @Okus@lemmy.dbzer0.com . Just the only case that has all these features. And it's no affiliate link, so I don't even get anything if somebody clicks on it.
Sounds like the regular way still works for you then! I've given away most of my smaller drives, I'm pretty sure I don't have anything smaller than 32GB right now.
For rpi images i think the best option would be PINN; but it's not a 1:1 equivalent since every time you add an image it needs to wipe partitions and start from zero.
It does support arm!! Most arm devices do not support UEFI though, and have very proprietary boot processes requiring custom kernels and such, so your milage may vary. UEFI arm (like on Libre Computer boards) will work flawlessly.
It still works for installing the OS though, at least in the case of Nix. I've not tried Guix so far, but I've installed NixOS on two machines in the past year using Ventoy.
Interesting. I wonder if it's an incompatible UEFI/BIOS? Both of the machines I put it on were fairly new, one was first boot on a server I built, the other was a recent laptop that I decided to run it on for a while.