raspberry pi password reset (라즈베리파이 패스워드 리셋/초기화)

Step 1 – Grab The SD Card

Power down the Pi and remove the SD card. Insert it into your PC.

Step 2 – Edit cmdline.txt

The boot partition should be visible and contain a file named “cmdline.txt”. Edit this file in a text editor and add the following to the end of the existing text :

init=/bin/bash

If the original content was :

dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait

it should now look like :

dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait 

init=/bin/bash

Make sure it is all one line! Save the text file and eject the SD card from the PC.

Step 3 – Reset the Password

Insert the card into a Pi that is connected to a monitor and keyboard. Power up the Pi. There may be a delay but you should be presented with a flashing cursor.
At the prompt type the following command :

mount -rw -o remount /

then

passwd pi

shutdown -P 0

Step 4 – remove init=/bin/bash