1.) ISO pop-up box does not appear in step 4.15
Solution: Go to the storage tab in the virtual machine settings and attach the ISO file
2.) Guest additions CD can not be mounted
Solution: CD is already mounted,
open the CD and press run software in the file explorer
3.) Kernel Error -1908
4.) Kernel CPU error - Wrong CPU detected (x86)
Solution: Select Ubuntu 64-bit, not 32-bit
5.) No menu present in Virtual Box when in the virtual machine
Solution: The machine started in scaled mode instead
of windowed mode. Can press Cntrl-C to switch to windowed mode, which
displays the menu.
6.) Synaptic package manager - Quick filter box does not display
after (sudo apt-get install apt-xapian-index and sudo
update-apt-xapian-index -vf) commands.
Solution: seems this is just a time issue. For
whatever reason, the quick filter box may not appear until after some
restarts.
7.) Hash mismatch in sudo apt update/(I/O error during install)