RHEL Recover root Password: Difference between revisions
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== | == Red Hat Enterprise Linux == | ||
# Reboot OS into emergency mode. | # Reboot OS into emergency mode. | ||
# During the GRUB2 countdown, Edit the first line by pressing <tt>'''"e"'''</tt>. | # During the GRUB2 countdown, Edit the first line by pressing <tt>'''"e"'''</tt>. | ||
| Line 27: | Line 6: | ||
### Immediately following the <tt>'''"quiet"'''</tt> keyword append <tt>'''"rd.break"'''</tt> | ### Immediately following the <tt>'''"quiet"'''</tt> keyword append <tt>'''"rd.break"'''</tt> | ||
# Continue the boot process. | # Continue the boot process. | ||
# | #: Press <tt>'''Ctrl-x'''</tt> to boot. | ||
# The system will boot into emergency mode and the <tt>'''switch_root'''</tt> prompt will appear. | # The system will boot into emergency mode and the <tt>'''switch_root'''</tt> prompt will appear. | ||
# Remount the <tt>'''/sysroot'''</tt> filesystem as <tt>'''rw'''</tt>. | # Remount the <tt>'''/sysroot'''</tt> filesystem as <tt>'''rw'''</tt>. | ||
# | #: <tt>'''# mount -o remount,rw /sysroot'''</tt> | ||
# chroot to the <tt>'''/sysroot'''</tt> filesystem. | # chroot to the <tt>'''/sysroot'''</tt> filesystem. | ||
# | #: <tt>'''# chroot /sysroot'''</tt> | ||
# Create a new password. | # Create a new password. | ||
# | #: <tt>'''# passwd'''</tt> | ||
# Update the SELinux Security Context. | # Update the SELinux Security Context. | ||
# | #: <tt>'''# touch /.autorelabel'''</tt> | ||
# Exit the <tt>'''/sysroot'''</tt> chroot. | # Exit the <tt>'''/sysroot'''</tt> chroot. | ||
# | #: <tt>'''# exit'''</tt> | ||
# Exit emergency mode. | # Exit emergency mode. | ||
# | #: <tt>'''# exit'''</tt> | ||
== Further Reading == | == Further Reading == | ||
# [https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system_administrators_guide/ch-working_with_the_grub_2_boot_loader#sec-Changing_and_Resetting_the_Root_Password RHEL7 Changing and resetting the root password] | |||
# [https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/configuring_basic_system_settings/changing-and-resetting-the-root-password-from-the-command-line_configuring-basic-system-settings#resetting-the-forgotten-root-password-on-boot_changing-and-resetting-the-root-password-from-the-command-line RHEL8 Changing and resetting the root password] | |||
# [https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/configuring_basic_system_settings/changing-and-resetting-the-root-password-from-the-command-line_configuring-basic-system-settings RHEL9 Changing and resetting the root password] | |||
[[Category:Linux]] | [[Category:Linux]] | ||
Latest revision as of 19:14, 2 April 2026
Red Hat Enterprise Linux
- Reboot OS into emergency mode.
- During the GRUB2 countdown, Edit the first line by pressing "e".
- Locate the line that reads "linux".
- Immediately following the "quiet" keyword append "rd.break"
- Locate the line that reads "linux".
- Continue the boot process.
- Press Ctrl-x to boot.
- The system will boot into emergency mode and the switch_root prompt will appear.
- Remount the /sysroot filesystem as rw.
- # mount -o remount,rw /sysroot
- chroot to the /sysroot filesystem.
- # chroot /sysroot
- Create a new password.
- # passwd
- Update the SELinux Security Context.
- # touch /.autorelabel
- Exit the /sysroot chroot.
- # exit
- Exit emergency mode.
- # exit