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.
XDHXT DELL PERC H710P 6Gbps 1GB PCI RAID CONTROLLER 0XDHXT
$59.00
ACASIS 2.5/3.5 inch 2 Bay SATA USB 3.0 Hard Drive Disk HDD SSD Enclosure 4 RAID
$55.45
LSI 9305-16i SATA SAS 12Gbs RAID Controller PCIe 3.0 x8 IT-Mode 4* 8643 SATA
$229.99
Lot of 2 -Dell P2R3R PERC H330 Mini Mono 12Gbps SAS Non-raid Controller 0P2R3R
$39.99
Inspur LSI 9300-8i Raid Card 12Gbps HBA HDD Controller High Profile IT MODE
$15.98
Dell KMCCD PERC H730 1GB Mini Mono RAID Controller
$21.00
LSI MegaRAID 9361-8i 12Gbps PCIe 3 x8 SATA SAS 3 8 Port RAID + BBU & CacheVault
$39.00
DELL PERC H310 RAID Controller with Cables, OHV52W, 6Gb/s SAS SATA PCIe x8
$19.95
ORICO Multi Bay RAID Hard Drive Enclosure USB 3.0/ Type-C For 2.5/3.5'' HDD SSDs
$179.99
Lenovo 930-16i PCIe SAS RAID Controller FRU P/N: 01KN508 Tested Working
$149.99