Step-by-Step: Resetting a Linux Password via LiveUSB and chroot
Boot from a LiveUSB
Use any Linux Live distro (Ubuntu, Fedora, Arch, etc.).
Most modern distros support chroot, but some minimal ones (like Tiny Core or Puppy Linux) might not include it by default.
Open a Terminal
Identify the root partition
sudo fdisk -l
Look for the Linux partition (usually something like /dev/sda2). (rarely will /etc be on it's own partition, but I have seen it).
Mount the root partition
sudo mount /dev/sda2 /mntShow more lines
Mount necessary virtual filesystems
sudo mount --bind /dev /mnt/dev
sudo mount --bind /proc /mnt/proc
sudo mount --bind /sys /mnt/sys
Chroot into the installed system
sudo chroot /mnt
Reset the password
passwd username
Replace username with the actual user account name.
Exit and clean up
exit
sudo umount /mnt/devsudo
umount /mnt/procsudo
umount /mnt/syssudo
umount /mntShow more lines
Reboot
sudo reboot
Notes on Compatibility
Ubuntu, Debian, Fedora, Arch, Manjaro, Mint — all support chroot out of the box.
Minimal distros — may require installing coreutils or util-linux to get chroot.
BusyBox-based systems — have a lightweight chroot, but it may lack full functionality.
Boot from a LiveUSB
Use any Linux Live distro (Ubuntu, Fedora, Arch, etc.).
Most modern distros support chroot, but some minimal ones (like Tiny Core or Puppy Linux) might not include it by default.
Open a Terminal
Identify the root partition
sudo fdisk -l
Look for the Linux partition (usually something like /dev/sda2). (rarely will /etc be on it's own partition, but I have seen it).
Mount the root partition
sudo mount /dev/sda2 /mntShow more lines
Mount necessary virtual filesystems
sudo mount --bind /dev /mnt/dev
sudo mount --bind /proc /mnt/proc
sudo mount --bind /sys /mnt/sys
Chroot into the installed system
sudo chroot /mnt
Reset the password
passwd username
Replace username with the actual user account name.
Exit and clean up
exit
sudo umount /mnt/devsudo
umount /mnt/procsudo
umount /mnt/syssudo
umount /mntShow more lines
Reboot
sudo reboot
Notes on Compatibility
Ubuntu, Debian, Fedora, Arch, Manjaro, Mint — all support chroot out of the box.
Minimal distros — may require installing coreutils or util-linux to get chroot.
BusyBox-based systems — have a lightweight chroot, but it may lack full functionality.
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