Linux Red Hat 7 forgot root password

Red Hat 7 Two ways to change the root password

Method One:

1. Restart the system and press "E"

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2. At the end of the linux16 line, add the following information and press "Ctrl+x" to start

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3. Re-mount the file system and change the root directory

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4. Change the root password

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5. Create related files in the root directory (for re-tagging selinux environment values)

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6. Exit, the system will restart

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Method Two:

1. Restart the system and press "E"

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2. The "RHGB quiet" in this line of linux16 is modified to "init=/bin/sh", which replaces the default daemon process with the shell and then presses "ctrl+x" to start

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3. Mount the file system as writable mode, because the root directory load permission is RO, so you need to re-mount the permissions to RW

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4. Change the root password

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5. Create related files in the root directory (for re-tagging selinux environment values)

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6. Run the command "Exec/sbin/init" to start the system normally

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Linux Red Hat 7 forgot root password