It happens with normal USB drives as well. If you log off of Linux Mint, it actually says "remove your drive and press enter' or something similar. If you don't, it won't always recognize it on reboot. The same must apply to booting from an SD card as well, sschueller.

lohiaprateek, we haven't had a brave enough tester to confirm how it will affect the bootloader, or if it even rests on that part of the device. My goal was to get Nokia to support increasing the built in storage and allowing it to be partitioned and turned into a bootable drive, without using an SD card on this and or future devices.