diff options
Diffstat (limited to 'sbin/reboot/reboot.8')
| -rw-r--r-- | sbin/reboot/reboot.8 | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/sbin/reboot/reboot.8 b/sbin/reboot/reboot.8 index 84dd887..420d4f8 100644 --- a/sbin/reboot/reboot.8 +++ b/sbin/reboot/reboot.8 @@ -28,7 +28,7 @@ .\" @(#)reboot.8 8.1 (Berkeley) 6/9/93 .\" $FreeBSD$ .\" -.Dd October 11, 2010 +.Dd May 22, 2015 .Dd Jan 06, 2016 .Dt REBOOT 8 .Os @@ -43,7 +43,7 @@ .Op Fl lNnpq .Op Fl k Ar kernel .Nm -.Op Fl dlNnpq +.Op Fl dlNnpqr .Op Fl k Ar kernel .Nm fasthalt .Op Fl lNnpq @@ -122,6 +122,13 @@ the flushing of the file system cache is performed (if the .Fl n option is not specified). This option should probably not be used. +.It Fl r +The system kills all processes, unmounts all filesystems, mounts the new +root filesystem, and begins the usual startup sequence. +After changing vfs.root.mountfrom with +.Xr kenv 8 , +.Nm Fl r +can be used to change the root filesystem while preserving kernel state. .El .Pp The @@ -139,6 +146,13 @@ Normally, the utility is used when the system needs to be halted or restarted, giving users advance warning of their impending doom and cleanly terminating specific programs. +.Sh EXAMPLES +Replace current root filesystem with UFS mounted from +.Pa /dev/ada0s1a : +.Bd -literal -offset indent +kenv vfs.root.mountfrom=ufs:/dev/ada0s1a +reboot -r +.Ed .Sh SEE ALSO .Xr getutxent 3 , .Xr boot 8 , |
