# Change kernel boot parameters at livecd iso. **URL:** \ **Category:** SUSE Studio / Studio Express\ **Created:** [November 23, 2016, 12:26am UTC](https://forums.suse.com/t/change-kernel-boot-parameters-at-livecd-iso/29033 "2016-11-23T00:26:02Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![z1trus](https://avatars.discourse-cdn.com/v4/letter/z/c77e96/32.png) [@z1trus](https://forums.suse.com/u/z1trus)\ **Post date:** [November 23, 2016, 12:26am UTC](https://forums.suse.com/t/change-kernel-boot-parameters-at-livecd-iso/29033/1 "2016-11-23T00:26:02Z")
I need to add ‘toram’ boot parameter at livecd iso. Not during boot (not manually). But as part of string in isolinux.cfg. How can I do it in SuseStudio? Custom scripts applied to the appliance, before making iso. So I can change boot parameters into /etc/default/grub, but can’t in ‘/boot/x86\_64/loader/isolinux.cfg’ Or how can I modify ISO image (add parameter into isolinux.cfg manually) and keep ISO bootable? I tried genisoimage, xorriso, mkisofs … and images had been unbootable (after I unpack-change-pack it again) ## – z1trus z1trus’s Profile: [http://forums.opensuse.org/member.php?userid=80469](http://forums.opensuse.org/member.php?userid=80469) View this thread: [http://forums.opensuse.org/showthread.php?t=521207](http://forums.opensuse.org/showthread.php?t=521207) ---
**Author:** ![pelupes](https://avatars.discourse-cdn.com/v4/letter/p/97f17d/32.png) [@pelupes](https://forums.suse.com/u/pelupes)\ **Post date:** [June 24, 2017, 10:13pm UTC](https://forums.suse.com/t/change-kernel-boot-parameters-at-livecd-iso/29033/2 "2017-06-24T22:13:55Z")
I would actually also want to know this… I have overlay files to big for the defailt ramdisk\_size leading to boot failure of an ISO image; if you change the ramdisk\_size manually at boot it works but it would be nice to specify a different default.