Linux forgot root password

Restart the system first, in reading seconds 3,2,1, the mouse must point into the virtual machine, this time press any key, will be out of line below this

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Press E to enter the Grub edit mode, which will now appear

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Move the cursor to the kernel line, and then press E to enter the edit interface of the kernel, and then the interface that appears, the last party input

Single (some input s or 1)

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When you press ENTER again to confirm,

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Press B to boot into single-user mode.

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Linux forgot root password