User manual

Etherboot User Manual
your BOOT-Prom or available from the contrib
directory of the "etherboot" package.
<esc>[a;b;c;d-<data>
same as above, but pack pixels into three
bits. The first pixel is stored in the three
most significant bits of the first data
byte.
Note that you usually have to specify any control characters directly (rather than in hex form) in
your
/etc/dhcpd.conf file.
TAGS 192 thru 207
these tags define all of the valid boot images and override any settings that are given with the
filename field in your
/etc/dhcpd.conf. It is allowed to leave gaps in the list. This has an impact
on how the default image will be selected.
All entries are of the form
label:server:gateway:filename:passwd:flags:cmdline
For future extensibility, it is permitted to append an arbitrary amount of other colon separated
entries as long as the limit of 255 characters per tag is not exceeded. Non-existent entries can be left
empty. This means that the default value for this particular entry will be used. Trailing colons can be
omitted.
label
this is the text string that is displayed to the user. It can contain arbitrary characters, except for
a colon. Embedding arbitrary control characters is not recommended, but you might be able to
include ANSI escape sequences (if enabled in the ROM) for changing text attributes as long as
you restore the attributes at the end of the string. It probably does not make very much sense to
leave this entry empty.
server
(This field is no longer supported. Its contents will be ignored.)
gateway
(This field is no longer supported. Its contents will be ignored.)
filename
name of the boot image that has to be loaded by TFTP. If this entry is omitted, then the
machine boots locally from disk. If enabled in the BOOT-Prom, you can specify
pseudo-filenames for booting from a local blockdevice (floppy, harddisk, ...); these filenames
have to match the pattern "/dev/[fh]d*". If the BOOT-Prom does not have support for these
pseudo-filenames, you can still boot from blockdevices by storing an boot image as generated
by mknbi-blkdev under the name of the desired blockdevice (symbolic links will do). In
Etherboot 4.6.2 and later, a - in this field means use the filename specified in the
BOOTP/DHCP reply. This saves on menu size.
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