I don't know what's going on exactly, but I've been getting flash drive corruption when booting with UEFI on my HP EliteDesk 800 G1.
I boot with the Knoppix 8.2 DVD, install to flash drive with fat32 and a persistent image file and reboot.
In the bios startup boot menu (F9 on the HP) I get two selections for my flash drive boot, the same drive listed in two locations: one in UEFI and the other in Legacy mode.
I thought, oh it will boot into UEFI mode, let's try it!
It seems like every time I've tried a UEFI boot it will clobber my flash drive, overwriting the first sectors of the flash drive and in general corrupting it.
I start seeing a bunch of inode errors in my dmesg log.
It's done this a couple of times now, so I'm going to see if just booting with Legacy mode will be safe.
It could be the HP system, the flash drive, or maybe booting with UEFI mode.
USB Flash Drive Memory Thumb Photo Sticks For iPhone iPad 128/256/512GB 1TB 2TB
$25.33
SanDisk 32GB Ultra Dual Drive USB Type-C, USB 3.1 Flash Drive - SDDDC2-032G-G46
$10.99
SanDisk 16GB Ultra USB 3.0 Flash Drive - SDCZ48-016G-U46
$6.25
SanDisk 128GB Ultra Flair USB 3.0 Flash Drive - SDCZ73-128G-G46
$12.99
New TESLA OEM Model S,3,X,Y USB Flash Drive for Dashcam & Sentry Mode 128GB
$18.99
Lenovo USB 16TB 3.0 USB Flash Drive Thumb Disk Silver Transfer Metal Memory
$24.99
Mechanical Style Flash Drive USB 3.0 High Speed 16TB Large Capacity Waterproof
$8.37
Sandisk 16GB 32GB 64GB 128GB Cruzer Blade Flash Drive Memory Stick USB Lot Pack
$4.99
USB Flash Drive Memory Stick Pendrive Thumb Drive 4GB, 8GB, 32GB, 64GB 128GB LOT
$249.37
Lot USB Flash Drive Memory Stick Pendrive Thumb Drive 2GB,4GB, 8G, 32G, 64G 128G
$414.85