Bill Davidsen <[EMAIL PROTECTED]> wrote:
> This has been on my "someday list" for a while, does it have the
> capability of taking a bootable image, letting me change the non-boot
> files, and then giving me another burnable image? I'm thinking Linux
> install disks with the extras and upgrades added, to simplify creation.
> While I know how to make bootable media, from scratch if need be, I
> don't much enjoy the steps. :-(
This will not work without non-artficial intelligence as you need tricks to
make a CD boot on every BIOS.
The best way to re-create a bootable CD is to manually find the boot image
first. This can be done by calling "isodebug":
isodebug -i /tmp/sol-nv-b87-x86-dvd.iso
ISO-9660 image created at Mon Apr 7 12:32:02 2008
Cmdline: 'mkisofs 2.01 -b boot/grub/stage2_eltorito -c .catalog -no-emul-boot
-boot-load-size 4 -boot-info-table -relaxed-filenames -l -ldots -r -N -d -D -V
SOL_11_X86 -o .../solarisdvd.iso .../solarisdvd.product'
As yoou see, the boot image is "boot/grub/stage2_eltorito", however only the
first 2048 bytes of this file are announced in the ElTorito header:
isoinfo -d -i /tmp/sol-nv-b87-x86-dvd.iso
CD-ROM is in ISO 9660 format
System id: Solaris
Volume id: SOL_11_X86
Volume set id:
Publisher id:
Data preparer id:
Application id: MKISOFS ISO 9660/HFS FILESYSTEM BUILDER & CDRECORD CD-R/DVD
CREATOR (C) 1993 E.YOUNGDALE (C) 1997 J.PEARSON/J.SCHILLING
Copyright File id:
Abstract File id:
Bibliographic File id:
Volume set size is: 1
Volume set sequence number is: 1
Logical block size is: 2048
Volume size is: 1984486
El Torito VD version 1 found, boot catalog is in sector 10559
NO Joliet present
Rock Ridge signatures version 1 found
Eltorito validation header:
Hid 1
Arch 0 (x86)
ID ''
Key 55 AA
Eltorito defaultboot header:
Bootid 88 (bootable)
Boot media 0 (No Emulation Boot)
Load segment 0
Sys type 0
Nsect 4
Bootoff 2940 10560
What you see with this output is that the file /boot/grub/stage2_eltorito
starts at Sector # 10560.
As ElTorito only announces 2048 bytes from:
-r--r--r-- 1 0 0 133008 Apr 2 2008 [ 10560 00]
stage2_eltorito
(this output if from isoinfo -i /tmp/sol-nv-b87-x86-dvd.iso -lR)
it is obvious that any automated attempt to re-create a bootable DVD from the
Solaris install DVD will not work. BTW: Linux CDs/DVDs look very similar.
Jörg
--
EMail:[EMAIL PROTECTED] (home) Jörg Schilling D-13353 Berlin
[EMAIL PROTECTED] (uni)
[EMAIL PROTECTED] (work) Blog: http://schily.blogspot.com/
URL: http://cdrecord.berlios.de/old/private/ ftp://ftp.berlios.de/pub/schily
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