#1 2025-02-20 14:29:28

emptyhead41

New Member

Registered: 2025-02-20

Posts: 2

Is there a way to edit the iso?

Unfortunately I'm having a problem using the installer on an old Dell Latitude. After using dd to put the iso onto a usb stick and booting into it, I get some odd error messages ('Failed to open \EFI\BOOT\? - Invalid Parameter' and a couple of others similar). When the GRUB menu appears it's just got a black square where the menu normally is. I'm not able to select anything and it just boots into the live environment.

I wanted then to set up the live environment menu item as the default by editing the config.cfg file. I did this, created an iso from the new files using mkisofs:

mkisofs -o output.iso -b isolinux/isolinux.bin -c boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -J -R -V "BunsenlabsInstall" .

Then used isohybrid to make it bootable (allegedly):

isohybrid output.iso

Unfortunately it's not a bootable image. Not particularly surprising as I didn't really understand what I was doing, particularly with the -b flag in mkisofs and with using isohybrid. So I'm wondering if there's an official procedure to edit the iso and make it bootable?

PS. The USB stick and downloaded iso are fine. The original image works correctly on my main PC, it just gives these errors on the Dell.

Head_on_a_Stick

Member

From: London

Registered: 2015-09-29

Posts: 9,093

Website

Re: Is there a way to edit the iso?

The Debian wiki has a guide that should apply to the BL ISO images:

https://wiki.debian.org/RepackBootableISO

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Para todos todo, para nosotros nada

emptyhead41

New Member

Registered: 2025-02-20

Posts: 2

Re: Is there a way to edit the iso?

The Debian wiki has a guide that should apply to the BL ISO images:

...

That's brilliant, thank you. Feel silly that I didn't check Debian wiki beforehand, but I'll remember now.
Thanks again