I bought a 5 pack of Eastfun brand 8gb thumbdrives thinking to use them as small test installs of pups, etc.
But I couldn't get any one of the 5 to work when using Fossapup64 and doing the Install>Bootflash>Create Grub4dos USB (mbr-bios) in any of the formats: f2s, fat32, ext3, ext4.
The boot would always do the same thing with all of the thumb drives. I'd get the boot menu, pick the top entry, and get the normal messages up until the point where it says Waiting for usb. Five dots later, it would fail to find the main Fossapup64 sfs and then a few red lines of panic and shut down.
I have another older 16gb PNY thumbdrive, so I did the same with it and, no problems, Fossapup64 started right up. All of these thumb drives are USB 2.0.
Thinking the PNY drive must be faster than the Eastfuns I did a few read and write tests of large and small files, also hdparm in a terminal, and established that the Eastfuns were actually pretty good for USB 2.0 drives, and faster than the PNY on writes. Eastfuns were about 23-24 mB/sec for both reads and writes, PNY was about 30 on reads and a only 7 on writes. (Write speed was tested with a 2.2 gig file, and checking time to completion.)
I can't help but think that something else than speed must be the problem.
So I thought I'd try actually running a program on both types for comparison. I happened to have Mikes Anydesk portable handy, so copied it to one of the Eastfuns. I got 6 errors while copying. Hmm. So I tried the same thing with the PNY thumb drive and got exactly the same six errors. Hmm. Why is that?
So I copied the Anydesk file to /root/ on the HD and got no errors. Hmm.
The errors all said I didn't have permission to copy the files, and those 6 files also were all file links, not actual files. And they all belonged to Spot. But ALL of the Anydesk files belong to Spot, and most of them copied over fine. So why don't file links copy over, for "permissions" reasons?
So I have two problems -- why can't I get a bootable usb thumbdrive out of this, and why the permissions errors -- or is that a single question, because they are somehow related?