On Thursday 20 September 2001 01:35, you wrote:
> Today's sync pulled in isolinux directory. What is it for?
{ What is ISOLINUX? }
ISOLINUX is a boot loader for Linux/i386 that operates off ISO 9660/El Torito
CD-ROMs in "no emulation" mode. This avoids the need to create an "emulation
disk image" with limited space (for "floppy emulation") or compatibility
problems (for "hard disk emulation".)
{ How Can I Make a Bootable CD With ISOLINUX? }
Make sure you have a recent enough version of mkisofs. I recommend mkisofs
1.13 (distributed with cdrecord 1.9), but 1.12 might work as well (not
tested.)
To create an image, create a directory called "isolinux" underneath the root
directory of your ISO image master file tree. Copy isolinux.bin, a config
file called "isolinux.cfg" (see syslinux.doc for details on the configuration
file), and all necessary files (kernels, initrd, display files, etc.) into
this directory, then use the following command to create your ISO image (add
additional options as appropriate, such as -J or -R):
mkisofs -o output.iso \
-b isolinux/isolinux.bin -c isolinux/boot.cat \
-no-emul-boot -boot-load-size 4 -boot-info-table \
root-of-iso-tree
ISOLINUX resolves pathnames the following way:
A pathname consists of names separated by slashes, Unix-style.
A leading slash means it searches from the root directory; otherwise the
search is from the isolinux directory (think of this as the "current
directory".)
. and .. in pathname searches are not supported.
The maximum length of any pathname is 255 characters.
Note that ISOLINUX only uses the "plain" ISO 9660 filenames, i.e. it does
not support Rock Ridge or Joliet filenames. It can still be used on a disk
which uses Rock Ridge and/or Joliet extensions, of course. Under Linux, you
can verify the plain filenames by mounting with the "-o norock,nojoliet"
option to the mount command. Note, however, that ISOLINUX does support "long"
(level 2) ISO 9660 plain filenames, so if compatibility with short-names-only
operating systems like MS-DOS is not an issue, you can use the "-l" or
"-iso-level 2" option to mkisofs to generate long (up to 31 characters) plain
filenames.
ISOLINUX does not support discontiguous files, interleaved mode, or logical
block and sector sizes other than 2048. This should normally not be a
problem.
ISOLINUX is by default built in two versions, one version with extra
debugging messages enabled. If you are having problems with ISOLINUX, I would
greatly appreciate if you could try out the debugging version
(isolinux-debug.bin) and let me know what it reports.
--
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MandrakeSoft's VAR and System Integrator
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