Forgot password in linux VirtualBox SOLVED!

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Forgot password in linux. VirtualBox. SOLVED!

1. restart.
2. press left shift
3. chose second option + Enter
4. chose second option again + Enter
5. choose root
6. Enter
7. input: 
 mount -rw -o remount /

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
remember that you will be root when you're in 
recovery mode so just be careful after you've 
remounted the disk.
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

8. passwd {username}
9. insert password
10.1 exit
11. resume + enter + wait
12. restart again to fix the size of the screen