Page 1 of 1

How to make an ISO image emulate floppy

Posted: Fri Aug 22, 2014 4:01 pm
by omar
Does anyone know how to make an ISO image using

Code: Select all

genisoimage
? I'm using Debian GNU/Linux 7.6 Wheezy and I know it's possible to emulate floppy with ISO. I just don't know how? There is option

Code: Select all

-no-emul-boot
and

Code: Select all

-hard-disk-boot
but I need floppy emulation.
Any help please? And thank you in advance!

Re: How to make an ISO image emulate floppy

Posted: Fri Aug 22, 2014 6:02 pm
by Nable
Google-fu (i.e. ability to use search tools) is a kind of required knowledge. I gave you link to OSDev wiki page about El-Torito, if you look at the page end, you'll find the link to genisoimage wiki page. That page has the ready example.

Re: How to make an ISO image emulate floppy

Posted: Fri Aug 22, 2014 6:04 pm
by Wajideu
I believe the reason there is a "-no-emul-boot" option is because the default is an emulated disc. There's no special actions you have to take, just write a normal floppy bootloader and assign it as the disc's boot data. Unless you're working with old pc's though, I would suggest using an actual cd boot image. Then you don't have to worry about cramming your bootloader into 510 bytes.