any one know anything about bootable iso's over 4gb. At 4gb my iso boots fine. at 5gbs no operating system is found. so if I add a file or bunch of files that pushes the iso size over 4gb, it no longer boots. Any help is greatly appreciated.

Not completely sure here, but you'd need a optical drive and BIOS capable of booting from a dual-layer DVD (or a Blu-Ray DVD I guess). Never really tried anything over 4GB myself so I don't have any experience. I hope someone else can help.

File order is importand at big images. Bootable 8gb is possible.
Setupldr.bin acess first 4 GB only. Early boot devices has to be below first 4gb.

Create a folder c:\add\ZZZ. add a file or bunch of files c:\add\ZZZ.
At PEBuilder add custom folder c:\add.
That way ZZZ goes at end of media.

If need be you can add a single file greater 4gb too, e.g. a single file at a Blu-Ray.
Update mkisofs.

say that again? slower I almost get it and it sounds like what I should do.

You sure??? I thought it was 2gig?

@teksupddg
Again, slooow:
Create a folder c:\add\ZZZ. add a file or bunch of files c:\add\ZZZ.
At PEBuilder add custom folder c:\add.


@hilander999
Yes, I'm sure. It's about 4 gigs, not 2 gigs.
Maybe 4 gigs less one or two sectors (2048 byte). I don't recall anymore.