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= INVESTIGATION 1: TROUBLESHOOTING AFTER VM INSTALLS & BACKUPS =
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[[Image:grub1.png|thumb|right|400px600px|Press '''e''' at Grub Boot Menu to edit]]
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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.
'''Steps to Boot into "Single-User Mode":'''
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[[Image:grub2_1.png|thumb|right|400px600px|Press '''e''' at the Grub Boot Menu.]]
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#Boot-up your c7host. As soon as the Grub Boot menu appears, press the letter '''e''' (for "edit").