I installed Manjaro on a USB flash drive, chose it when booting and started to boot from it. Does not load, the error is attached to the photo. The same situation occurred earlier with Ubuntu, but it cured by inserting the path to the device instead of the UUID (/ dev / sda), but for some reason, it doesn’t work with Manjaro. I am not very experienced in this matter, so I would like to get an answer as a beginner, detailed in details. I will be very grateful. 
During boot does not see dev / sdb at all, only internal disks with Windows ... 