how is boot.img for cdimagegui created?

[Rob325]

How do I unpack and repack the boot.img to include my own files and modify the existing ones?

I've done some searching and found that I'll need Bart's Boot Image extractor or similar, but how do I re-create the boot.img?

Thanks

[Nepali]

sale teti pani jandainas;;;

use winimage

winimage can handle img files