INACCESSIBLE_BOOT_DEVICE when booting from USB

According to this thread, the USB 3.0 drivers aren’t loaded at the stage of the boot process where Windows tries to access the boot partition.

To make Windows load the USB drivers sooner:

1. Press Win+R, type ‘regedit’ and press Enter.
2. Enter HKLM\SYSTEM\HardwareConfig\ in the address bar at the top.
3. Enter each folder and set BootDriverFlags to 14 (hexadecimal).