How to edit bootable ISO for free?

FREE ISO Editor

(by 2016)

Method 1:

• Use SecureCD creator. It is free ISO editor & ALL-IN-ONE solution! (You wont need premium features. However, it is free too)

Method 2:

• Download WinIso (Trial version make modification only max.100mb file). However, you can freely EXTRACT any iso file, then modify it as you need, then :

• Download ImgBurn and create a bootable ISO from extracted folder. (Instead of ImgBurn you can also use Folder-ISO-creator or Folder2Iso, but I am not sure if they can create bootable images).

Method 3 (untested by me)

• TotalMounter (free) is said to do the job

Method 4 (untested by me)

• there also exists ISOpen (FREE) that claims to modify ISO files directly, but latest version seemed crap/non-working/malicious to me... Do at your own risk, or test only in VirtualBox windows as recommended for crap apps.);
  

== Commercial(Trial) software ==

• gBurner ( during 30 day trial period, you can modify ANYTHING! after that, only 300mb files);
  
• ISO master + Poweriso + MagicISO + UltraISO + WinISO (filesize limits, about 300mb);
  

WinRAR, 7zip, MagicISO and imgBurn all let you open and edit files, although WinRAR is paid for (eventually, that is).

I just came across a program which did this for me: ISO Master

Only thing is, it's Linux-only. I searched for Windows-based software for two days but did not come across anything that could edit a bootable ISO file.

Image Master or Deep Burner seems to be the windows solutions to ISO Master.

I would use 7-zip to extract the ISO, hack about with this, LC ISO Creator and then either ImgBurn to burn the ISO or ImDisk to mount it.

AnyBurn can do it. It lets you modify the contents of an ISO image. It supports bootable images: it can add, remove or keep boot information.