svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.
reboot(8)
reboot(8) System Administration Commands reboot(8)
NAME
reboot - restart the operating system
SYNOPSIS
/usr/sbin/reboot [-c comment] [-f [-e environment] | -p] [-dlnq]
[boot_arguments]
DESCRIPTION
The reboot utility restarts the system.
Oracle Solaris supports two methods of reboot:
PROM
The kernel transfers control to the PROM monitor, firmware, or hy‐
pervisor, which loads the next kernel into memory and then trans‐
fers control to the loaded kernel. This is the same method used
when initially powering up a system.
Fast
The running kernel loads the next kernel into memory, and then
transfers control to the newly loaded kernel directly, bypassing
the PROM, firmware, or hypervisor. This has the potential to run
much more quickly than a PROM boot, and minimizes downtime. Note
that the system may fall back to PROM reboot if fast reboot is not
possible. The most common reason for such a fall back is a driver
failing to quiesce a hardware device in preparation for a fast re‐
boot. See quiesce(9e).
The default method of reboot is controlled on a per-system basis by the
config/fastreboot_default property of the svc:/system/boot-config:de‐
fault SMF service. The -p or -f option can be used to override the sys‐
tem default, and explicitly specify which reboot method is to be used
for the reboot initiated by this command.
Although reboot can be run at any time, shutdown(8) is normally used
instead to warn all users logged in of the impending loss of service
and to cleanly stop running services. See shutdown(8) for details.
The reboot utility performs a sync(8) operation on the disks, and then
a multi-user reboot is initiated. See init(8) for details. The reboot
utility may also update the boot archive as needed to ensure a success‐
ful reboot.
The reboot utility normally logs the reboot to the system log daemon,
syslogd(8), and places a shutdown record in the login accounting file
/var/adm/wtmpx. These actions are inhibited if the -n or -q options are
present.
Normally, the system reboots itself at power-up or after crashes.
The reboot utility must be run with an effective uid of 0, which may be
provided by the Maintenance and Repair rights profile.
OPTIONS
The following options are supported:
-c comment
Include the supplied comment in any messages logged and as much of
the comment as will fit into the wtmpx record. If a crash dump is
being forced make the comment available in the crash dump. The com‐
ment will need to be quoted according to the shell's quoting rules.
-d
Force a system crash dump before rebooting. See dumpadm(8) for in‐
formation on configuring system crash dumps.
-e environment
If fast rebooting, reboot to the specified boot environment.
-f
Fast reboot, bypassing firmware and boot loader. The new kernel
will be loaded into memory by the running kernel, and control will
be transferred to the newly loaded kernel. If disk or kernel argu‐
ments are specified, they must be specified before other boot argu‐
ments.
See EXAMPLES for details.
The -p and -f options are mutually exclusive.
-l
Suppress sending a message to the system log daemon, syslogd(8)
about who executed reboot.
-n
Avoid calling sync(2) and do not log the reboot to syslogd(8) or to
/var/adm/wtmpx. The kernel still attempts to sync filesystems prior
to reboot, except if the -d option is also present. If -d is used
with -n, the kernel does not attempt to sync file systems.
-p
Reboot to prom. This flag can be used to reboot the system through
firmware without changing the default reboot behavior as denoted by
the config/fastreboot_default property setting in the system/boot-
config service.
The -p and -f options are mutually exclusive.
-q
Quick. Reboot quickly and ungracefully, without shutting down run‐
ning processes first.
OPERANDS
The following operands are supported:
boot_arguments
An optional boot_arguments specifies arguments to the uadmin(2)
function that are passed to the boot program and kernel upon
restart. The form and list of arguments is described in the boot(8)
and kernel(8) man pages. If the arguments are specified, whitespace
between them is replaced by single spaces unless the whitespace is
quoted for the shell. If the boot_arguments begin with a hyphen,
they must be preceded by the -- delimiter (two hyphens) to denote
the end of the reboot argument list.
EXAMPLES
Example 1 Passing the -r and -v Arguments to boot
In the following example, the delimiter -- (two hyphens) must be used
to separate the options of reboot from the arguments of boot(8).
example# reboot -dl -- -rv
Example 2 Rebooting Using a Specific Disk and Kernel
The following example reboots using a specific disk and kernel.
example# reboot disk1 kernel.test/unix
Example 3 Fast Rebooting
The following examples use the -f option to perform fast reboots.
If the service svc:/system/boot-config:default is enabled and the prop‐
erty config/fastreboot_default is set to true, the -f option can be
omitted.
On an x86 system, the following command reboots to the default entry in
the GRUB (see grub(7)) menu file menu.lst.
example# reboot -f
The following command reboots to another ZFS root pool.
example# reboot -f -- 'rpool/ROOT/root2'
The following command reboots to mykernel on the same disk with -k op‐
tion.
example# reboot -f -- '/platform/i86pc/mykernel/amd64/unix -k'
The following command reboots to mykernel off another root disk mounted
on /mnt.
example# reboot -f -- '/mnt/platform/i86pc/mykernel/amd64/unix -k'
The following command reboots to /platform/i86pc/kernel/$ISADIR/unix on
another boot environment named second_root.
example# reboot -f -e second_root
The following command reboots to the same kernel with -kv options.
example# reboot -f -- '-kv'
The following commands disable the fast-reboot-by-default behavior.
example# svccfg -s "system/boot-config:default" \
setprop config/fastreboot_default=false
example# svcadm refresh svc:/system/boot-config:default
The following commands re-enable the fast-reboot-by-default behavior.
example# svccfg -s "system/boot-config:default" \
setprop config/fastreboot_default=true
example# svcadm refresh svc:/system/boot-config:default
Example 4 Rebooting to a Particular GRUB Menu Entry
The following commands will reboot to entry 2 in the GRUB menu.
example# bootadm list-menu
the location for the active GRUB menu is: /rpool/boot/grub/menu.lst
default 0
timeout 10
0 zfsbe1
1 zfsbe1 failsafe
2 zfsbe2
3 zfsbe2 Solaris xVM
4 zfsbe2 failsafe
example# reboot 2
FILES
/var/adm/wtmpx
login accounting file
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ Availabilitysystem/core-os
SEE ALSO
mdb(1), sync(2), uadmin(2), reboot(3C), wtmpx(5), attributes(7),
grub(7), boot(8), bootadm(8), dumpadm(8), halt(8), init(8), kernel(8),
shutdown(8), svcadm(8), svccfg(8), sync(8), sysadm(8), syslogd(8)
Rebooting a System in Booting and Shutting Down Oracle Solaris 11.4
Systems
NOTES
The reboot utility does not execute the scripts in /etc/rcnum.d or exe‐
cute shutdown actions in inittab(5). To ensure a complete shutdown of
system services, use the shutdown(8) or init(8) commands to reboot a
Solaris system. Both commands perform a clean shutdown of the system.
As such, all file system changes are written to disk, and all system
services, processes, and the operating system are terminated normally.
System services managed by SMF are shutdown in reverse dependency or‐
der.
Reboot may be blocked if an admin has used sysadm(8) to place the sys‐
tem into a noreboot maintenance mode, or if the config/noreboot prop‐
erty is set to true on the svc:/system/boot-config SMF service.
Oracle Solaris 11.4 23 Jun 2025 reboot(8)