boot(4) UNIX System V boot(4)
NAME
boot
DESCRIPTION
Options for the boot program can be set or changed with keywords in
/etc/default/boot. The following are recognized by boot.
AUTOBOOT=YES or NO
Indicates whether or not boot starts loading the kernel
immediately or displays a boot prompt first.
BOOTMSG=string The default boot message is changed to string.
BOOTPROMPT=string
The default boot prompt is changed to string.
DEFBOOTSTR=bootstring
Sets default bootstring to bootstring. This is the
string used by boot when the user presses RETURN only to
the boot prompt or when boot times out.
INITPROG=path Specifies an initialization program to be loaded and run
before boot sizes memory.
MEMRANGE=range[,range...]
Tells boot where to look when sizing memory. A range is
a pair of decimal addresses, separated by a dash (such as
1M-4M), followed by a set of one-byte flags. This ses sf
flags should be encoded as an integer in the range of
0-55. Use a colon (:) to separate addresses from flags.
Note that only two flags are currently defined: 0
(indicates no special properties) and 1 (indicates memory
for which DMA is not allowed). All other flags are
currently undefined and reserved for future use. In
addresses, use ``M'' to indicate the word ``megabyte''
and ``K'' to indicate the word ``kilobyte.'' Both upward
(such as 15M-16M) and downward (such as 16M-15M) address
ranges are supported. The first address in the pair is
inclusive; the last address is exclusive. When sizing
the base memory (0-640K usually) the boot code will check
the CMOS for the current base memory setting. If this
value is less than the current base memory value, the
kernal will use this lower value instead of 640K.
PANICBOOT=YES or NO
If this is set to YES, when the system panics, it will
automatically do a soft reboot to bring the system back
up. If this is set to NO, the system will just wait in
panic until the system is manually rebooted by the user.
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boot(4) UNIX System V boot(4)
TIMEOUT=number If boot is waiting for a boot line from the user and
TIMEOUT is set, boot will wait for number seconds, then
use the default boot line defined by DEFBOOTSTR.
FILES
/etc/default/boot
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