I have a live USB made with the standard Ubuntu disk image creator for 16.04 LTS. In the current state, I can boot to this disk, but it still requires the original USB to run properly at all times.
Attempting to pull the drive and use the system generates a large amount of I/O errors, further suggesting that the USB drive is actually needed for things not already loaded into RAM (For example, Firefox worked without the USB, but I used it once before already.
apt, on the other hand, did not.)
Is there a way to copy the entire Ubuntu live disk to RAM, so I can remove the drive and free up a USB slot for other things?