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= INVESTIGATION 1: TROUBLESHOOTING AFTER VM INSTALLS & BACKUPS =
{| width="40%" align="right" cellpadding="10"|- valign="top"|[[Image:grub1.png|thumb|right|100px|Press '''e''' at the Grub Boot Menu.]]|[[Image:grub2.png|thumb|right|400px|Select Linux Kernel and press '''e''' to edit Linux Kernel boot optons ]]|- valign="top"|[[Image:grub3.png|thumb|right|400px|Add word '''single''' at the end of boot options, '''ENTER''' and press '''b''' to boot ]]|[[Image:grub4.png|thumb|right|400px|System boots into text-based mode in root (without prompting for root password!) ]]|}
There are a few "classic problems" that students can encounter with their virtual machines and their host machine after performing lab2. Although all OPS235 students may not encounter these problems, it is good to be aware of them and know how to troubleshoot a problem in order to solve the problem.
'''Troubleshooting consists of 3 basic elements:'''
