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.
Western Digital 1TB Caviar WD1002FBYS Enterprise SATA Hard Disk Drives
$24.99
1TB Samsung 840 EVO Internal 2.5" SATA III SSD MZ7TE1T0HMHP Solid State Drive
$69.83
Western Digital 1TB WD Blue SA510 SATA SSD Internal 2.5”/7mm Cased - WDS100T3B0A
$89.99
1TB Samsung SSD 840 EVO Internal 2,5" SATA III MZ7TE1T0HMHP MZ-7TE1T0 1GB Cache
$70.80
Patriot P210 128GB 256GB 512GB 1TB 2TB 2.5" SATA 3 6GB/s Internal SSD PC/MAC Lot
$19.99
1000 GB HHD 2.5" 1TB Mixed Brands Samsung WD HGST TOSHIBA, Tested Formatted
$14.90
2 PACK Seagate ST1000LM035 Mobile HDD 1TB 2.5" SATA III Laptop Hard Drive
$26.85
Samsung - Geek Squad Certified Refurbished 980 PRO 1TB Internal SSD PCIe Gen ...
$71.99
1TB/2TB USB 3.0 Flash Drive Thumb U Disk Memory Stick Pen PC Laptop Storage lot
$580.99
Type C USB 3.0 Flash Drive Thumb Drive Memory Stick for PC Laptop 1TB 2TB lot
$703.19