On 2015.06.04 19:28, JAYDEN CHARBONNEAU wrote:
> As for the ISO that gave an
> error,it was Mateusz's unofficial FDNPKG .iso.

Ah OK.

That ISO uses El-torito with a (FreeDOS) floppy image, so it's not 
compatible with Rufus yet (I have an enhancement [1] for El-Torito 
support, but it's a lot more tricky than it looks, even if the image is 
a FreeDOS one, as you'll usually get hardcoded A: paths all over the 
place, which need to be converted).

Using 7-zip and Rufus here's what I'd do:
1. Using Rufus create a FreeDOS bootable USB (no need to point to an 
ISO, just select FreeDOS)
2. Using 7-zip, open all_cd.iso and then, still in 7-zip, open 
[BOOT]\Bootable_1.44M.img -> you will see the FreeDOS content from the 
El-Torito bootable image
3. Extract that content to the root of the USB you created with Rufus, 
overwriting anything that's already on the USB
4. Edit CONFIG.SYS and AUTOEXEC.BAT on the USB and change any A: path to C:
5. Go back to the root of the ISO in 7-zip and extract everything except 
the [BOOT]\ directory onto the USB.

Of course there may be more tweaking to do, but that should get you 
closer to running that all_cd content from USB.

Regards,

/Pete

[1] https://github.com/pbatard/rufus/issues/63


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