User manual

Etherboot User Manual

# will keep working even when the network topology is changed. Leaving

# the server IP address and the gateway IP address empty, should

# ensure that booting works even when we go thru "bootpgw" gateways.

# "Technicolor" special effects are achieved by changing the

# foreground text color of the individual labels. You could even embed

# small icons after switching to graphics mode. C.f. "linux-logo.ansi"

# for an example; this will not work, if your BOOT Prom does not have

# support for ANSI escape sequences.

# Passing boot-time parameters to the Linux kernel, requires the

# password "Penguin".

# Booting from the local disk requires the password "Joshua". If the

# BOOT-Prom does not have support for booting from local block devices

# (floppy, harddrive, ...), then you can either omit the filename

# (c.f. README.Security for potential security problems) or your TFTP

# server has to provide a boot image that has been generated by

# mknbi-blkdev.

.imagemenu:\

:tc=.motd:\

:T128=E44574680000:\

:T160="timeout=30:default=207:":\

:T192="ESC[32mLinux 2.0.27ESC[37m:::/tftpdir/image-linux:99625fa1cac27bb6a2b33b7

:T193="ESC[33mDOS 6.2ESC[37m:::/tftpdir/image-dos":\

:T207="ESC[34mLocal DiskESC[37m:::/dev/hda:85b103482a20682da703aa388933a6d8":

# When using more than a handful of vendor parameters, we have to

# specify an extension file "ef". If you are very careful, then it is

# possible to use one extension file for several hosts. Don’t forget

# to run "bootpef" after editing the "bootptab", and make sure that

# you "chroot" into the proper directory, if applicable.

.default:\

:tc=.imagemenu:\

:bf=tftpdir/image-rom:\

:hd=:\

:ht=ethernet:\

:sm=255.255.255.0:\

:vm=auto:\

:ef=extension.bootp:

# Ideally, hosts differ only with respect to their ethernet hardware

# ID and IP number. We let the "bootpd" look up the correct IP number.

thalamus:tc=.default:ha=00400529C11B:ip=thalamus:

cortex: :tc=.default:ha=0000C0531A24:ip=cortex:

Here is an example DHCP speciﬁcation that uses an external menu program. It also illustrates the use of

- in the ﬁlename portion of the menu options to eliminate needless repetition.