# phpman > info > systemd-remount-fs.service

[SYSTEMD-REMOUNT-FS.SERVICEsystemd-remount-fs.servSYSTEMD-REMOUNT-FS.SERVICE(8)](https://www.chedong.com/phpMan.php/man/SYSTEMD-REMOUNT-FS.SERVICEsystemd-remount-fs.servSYSTEMD-REMOUNT-FS.SERVICE/8/markdown)

NAME
       systemd-remount-fs.service, systemd-remount-fs - Remount root and
       kernel file systems

SYNOPSIS
       systemd-remount-fs.service

       /lib/systemd/systemd-remount-fs

DESCRIPTION
       systemd-remount-fs.service is an early boot service that applies mount
       options listed in [fstab(5)](https://www.chedong.com/phpMan.php/man/fstab/5/markdown), or gathered from the partition table (when
       [systemd-gpt-auto-generator(8)](https://www.chedong.com/phpMan.php/man/systemd-gpt-auto-generator/8/markdown) is active) to the root file system, the
       /usr/ file system, and the kernel API file systems. This is required so
       that the mount options of these file systems -- which are pre-mounted
       by the kernel, the initial RAM disk, container environments or system
       manager code -- are updated to those configured in /etc/fstab and the
       other sources. This service ignores normal file systems and only
       changes the root file system (i.e.  /), /usr/, and the virtual kernel
       API file systems such as /proc/, /sys/ or /dev/. This service executes
       no operation if no configuration is found (/etc/fstab does not exist or
       lists no entries for the mentioned file systems, or the partition table
       does not contain relevant entries).

       For a longer discussion of kernel API file systems see API File
       Systems[1].

       Note: systemd-remount-fs.service is usually pulled in by systemd-fstab-
       [generator(8)](https://www.chedong.com/phpMan.php/man/generator/8/markdown), hence it is also affected by the kernel command line
       option fstab=, which may be used to disable the generator. It may also
       pulled in by [systemd-gpt-auto-generator(8)](https://www.chedong.com/phpMan.php/man/systemd-gpt-auto-generator/8/markdown), which is affected by
       systemd.gpt_auto and other options.

SEE ALSO
       [systemd(1)](https://www.chedong.com/phpMan.php/man/systemd/1/markdown), [fstab(5)](https://www.chedong.com/phpMan.php/man/fstab/5/markdown), [mount(8)](https://www.chedong.com/phpMan.php/man/mount/8/markdown), [systemd-fstab-generator(8)](https://www.chedong.com/phpMan.php/man/systemd-fstab-generator/8/markdown), systemd-
       [gpt-auto-generator(8)](https://www.chedong.com/phpMan.php/man/gpt-auto-generator/8/markdown)

NOTES
        1. API File Systems
           <https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems>

systemd 249                                      [SYSTEMD-REMOUNT-FS.SERVICE(8)](https://www.chedong.com/phpMan.php/man/SYSTEMD-REMOUNT-FS.SERVICE/8/markdown)