When enabled, Webmin sets GRUB_DISABLE_RECOVERY=true, which tells GRUB generator scripts to omit recovery-mode entries on distributions that support this option.

On BLS-based systems such as Rocky, AlmaLinux, and RHEL, rescue entries are separate files under /boot/loader/entries. Webmin hides existing BLS rescue entries by renaming their entry files, and restores only entries hidden by Webmin when this option is disabled again. Future kernel or rescue-image updates may create new BLS rescue entries.