Tips and Instructional topics. Not for support questions.
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meandean

- meandean
- Posts: 392
- Joined: Wed Mar 09, 2011 5:16 am

## Re: Snapshot : Customising boot menu (isolinux/syslinux)

Sat Nov 12, 2011 6:49 pm

> dzz wrote:Well, the point of this thread was originally an easy way for a user to create/modify and quickly test a custom menu, "custom" being the essence of Snapshot. That's why I wrote in the how-to section (we're really in "discuss" territory now)

And I just wanted to add another method for testing a custom menu to your howto and answer the questions you posed, ergo discussion.

> I didn't mean to suggest changes in original snapshot (working great as-is) which might go against any standards.

Sheesh I am not sure what the original snapshot actually is anymore. Obviously fsmithred can decide what he wants to include in refracta snapshot.
I was just talking about changing stuff for my snapshot scripts. I rewrote mine last nite after reading this thread. It is now all self-contained in one script, no files laying around. I like it! So thanks again for indulging in some discussion.

> what are the "standards" and why.

All kinds of iso-levels, eltorito, emulation and no-emulation, joliet, rockridge, and on and on and on.
Basically (and in very general terms) they try to be sure that different systems can understand the data on the disk.

> So the boot catalog is indeed autogenerated... but *You must specify* where it will go.

Actually I think the point to all that is that with the -c option you get a hidden boot catalog which complies with some standard(s). Otherwise you get a non-hidden boot catalog wich may or may not be compliant.
I would say it probably has to do with ancient computers that didn't really boot from a cd but did boot from floppy. So you create a hidden 'floppy' image on the cd with the proper boot files to make the computer think it is booting a floppy. Once again that is in general terms rather than technical specifics. Which is probably nothing to be concerned about anymore unless someone is still pecking away on a 350mhz PII system from 1997.
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