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OPS235 Lab 3 - CentOS7 - SSD

7 bytes removed, 08:38, 15 June 2016
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*I Forgot My '''root''' Password
*I Can't Start My Virtual Machine
 
'''Troubleshooting consists of 3 basic elements:'''
*Having '''Tenacity''' and '''patience''' (ability to focus on finding the cause of the problem)
 
 
If you cannot log graphically into your machine (first two common problems), there is a trick to boot your system into '''single-user''' mode. This mode does not provide networking, graphics, or logging in as other regular users, but can connect to a text-based interface as the '''root''' user. This method will only work if a GRUB (<u>'''Gr'''</u>and '''<u>U</u>'''nified <u>'''B'''</u>oot-loader) password has not been set, or that you haven't forgotten the GRUB password.
 
 
 
'''Steps to Boot into "Single-User Mode":'''
{| width="50%" align="right" cellpadding="10"
[[Image:grub2_1.png|thumb|right|600px|Add the boot option '''single''' and then press '''ctrl-x''' to boot into single user mode]]
|}
===Part 2: Booting into Single-User Mode===
If you cannot log graphically into your machine (first two common problems), there is a trick to boot your system into '''single-user''' mode. This mode does not provide networking, graphics, or logging in as other regular users, but can connect to a text-based interface as the '''root''' user. This method will only work if a GRUB (<u>'''Gr'''</u>and '''<u>U</u>'''nified <u>'''B'''</u>oot-loader) password has not been set, or that you haven't forgotten the GRUB password.
'''Perform the following steps:'''
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