How to hide administrator account or root in Login screen?
30157
How do I hide a particular user from the login screen?
26168
How do I hide the System Reserved partition?
44231
Remove sudo privileges from a user (without deleting the user)
19654
Turn off Automatic login with Windows 7
111479
How do you keep the password hidden when invoked during the su command?
91693
How to password protect grub menu entry?
33361
Get rid of the power and accessibility options on Windows 8 logon screen
139476
Ubuntu 18 Disable Auto Login
4227
How do I login as root?
54482
Why is there no option to login as root?
19521
Why is it bad to log in as root?
77181
How do I log out of `sudo su`?
78415
How to change administrator username?
20946
Use one password for administration and another for system login
119958
Disable a user's login without disabling the account
119421
Windows Server 2008 R2: User account set to not show on login
9117
How to Run an app as Administrator without the prompt?