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clean up.

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This commit is contained in:
stanley lieber 2011-04-17 08:17:01 +00:00
parent 9d24a107a5
commit 26984c0350
1 changed files with 28 additions and 31 deletions
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57
sys/man/8/9boot
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@ -6,7 +6,7 @@ started by BIOS or chainloaded by partition bootsector
.SH DESCRIPTION
The bootloader is responsible for reading the
.IR plan9.ini (8)
boot parameters and boot a kernel. It interprets the
boot parameters and booting a kernel. It interprets the
.B bootfile=
parameter as a file path on the current boot media
to locate the kernel image. The path should be in all
@ -15,19 +15,19 @@ lower case except for
wich supports case sensitive file names. Read parameters
are echoed on the console. The boot procedure
can be interrupted by pressing any key after the configuration
was read. Then a interactive boot console is shown with a
was read. The interactive boot console is indicated with a
.B >
prompt. The syntax of the boot console is the same as in
the
.IR plan9.ini (8)
file. The word
.B clear
will reset all current parameters and
will reset all current parameters. The word
.B boot
will end the console and start booting the kernel. The boot
console is entered automatically when boot failed, no
will end the console and resume booting the kernel. The boot
console is entered automatically when: boot failed, no
.B bootfile=
parameter is specified or no
parameter was specified or no
.IR plan9.ini (8)
was found.
.SH FAT BOOTING
@ -36,42 +36,39 @@ The
program is responsible for loading the kernel from
the
.IR 9fat
partition into memory and pass it the
partition into memory and passing it the
.IR plan9.ini (8)
boot parameters. It gets chainloaded by
.IR pbs
boot parameters. It is chainloaded by
.IR pbs,
wich locates it in the root of the active
FAT partition as
.B 9BOOTFAT
file.
Then
FAT partition. The
.B plan9.ini
is read from the root directory of the FAT
file is read from the root directory of the FAT
filesystem.
.SH CDROM BOOTING
Booting from cdrom requires
.SH CD-ROM BOOTING
Booting from CD-ROM requires
.IR 9bootiso
to be included in the iso image under
.B 386/9bootiso
and also
set as a non emulation bootblock see
to be included in the ISO-9660 image under
.B 386/9bootiso,
set as a non emulation bootblock. See
.IR mk9660 (8).
The BIOS loads the first 2K of
.B 386/9bootiso
into memory and passes execution to it. The program
then reads the rest of its code from the file to chainload itself.
into memory and then executes the program. The remainder
of the file is then read to complete the chainloading process.
Boot parameters are read from
.B cfg/plan9.ini
file.
.B cfg/plan9.ini.
.SH NETWORK BOOTING
With a PXE capable BIOS and network card, it is possible for
With a PXE capable BIOS and network card it is possible for
a machine to download
.IR 9bootpxe
from a tftp server and load the kernel from there. The
and a kernel from a tftp server. The location of
.IR 9bootpxe
is defined by the
.B bootf=/386/9bootpxe
in the machines
line in the tftp server's
.IR ndb (6)
entry will tell the PXE BIOS to use it.
entry.
.BR
Once started,
.IR 9bootpxe
@ -79,8 +76,8 @@ will read the file
.B /cfg/pxe/$ether
from the tftp server, where
.B $ether
is the mac address of the used network card
in lower case hex, and use it as
is the MAC address of the client's network card
in lower case hex, and use this as its
.IR plan9.ini (8)
file.
.SH SOURCE