Any secret to burning bootable CD's?

[The Hoelschers]

Got a nifty little pgm (mondo-archive) to try backing up to CD.  It goes
through and makes ISO images of the hard drive, and it's all pretty
cool.  I know I have decent ISO's 'cuz I can mount as loop dev's and
read away.

Now I try burning using Xcdroast.  Get a nice CD, but it ain't bootable.

Looked through cdrecord manpage and don't see any nifty flag to make
bootable.

The image does have a boot.cat file in the root directory, and various
mindi-boot.<size here>.img files in /images, and my bios is set to boot
from CD, but no-go.  Am I missing something?  Here is an ls -l of the
image;

[root at BigBoss loop]# ls -l
total 47
dr-xr-xr-x    2 root     root        38912 Oct  2 13:02 archives/
-r--r--r--    1 root     root         2048 Oct  2 13:02 boot.cat
dr-xr-xr-x    2 root     root         2048 Oct  2 11:56 images/
dr-xr-xr-x    3 root     root         2048 Oct  2 11:54 mnt/
dr-xr-xr-x    3 root     root         2048 Oct  2 11:56 usr/
[root at BigBoss loop]# cd images
[root at BigBoss images]# ls -l
total 13378
-r--r--r--    1 root     root      1652684 Oct  2 11:53 1.tar.gz
-r--r--r--    1 root     root      1643629 Oct  2 11:53 2.tar.gz
-r--r--r--    1 root     root       358933 Oct  2 11:53 3.tar.gz
-r--r--r--    1 root     root          256 Oct  2 11:56 df.txt
-r--r--r--    1 root     root      1763328 Oct  2 11:54
mindi-boot.1722.img
-r--r--r--    1 root     root      2949120 Oct  2 11:54
mindi-boot.2880.img
-r--r--r--    1 root     root      1763328 Oct  2 11:53 mindi-data-1.img
-r--r--r--    1 root     root      1763328 Oct  2 11:53 mindi-data-2.img
-r--r--r--    1 root     root      1763328 Oct  2 11:53 mindi-data-3.img
[root at BigBoss images]#
[root at BigBoss images]#   

Thanks -

Chris.

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