# Replace default kernel in an ISO

**URL:** https://forums.suse.com/t/replace-default-kernel-in-an-iso/34952
**Category:** SLED Install-Boot
**Created:** [April 14, 2020, 2:19pm UTC](https://forums.suse.com/t/replace-default-kernel-in-an-iso/34952 "2020-04-14T14:19:10Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![ajithknight](https://avatars.discourse-cdn.com/v4/letter/a/e56c9b/32.png) [@ajithknight](https://forums.suse.com/u/ajithknight)
#### Post date: [April 14, 2020, 2:19pm UTC](https://forums.suse.com/t/replace-default-kernel-in-an-iso/34952/1 "2020-04-14T14:19:10Z")

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Hello,

I would like to replace the existing kernel (kernel-default-4.12.14-94.41.1.x86\_64.rpm) in the ISO with one which i compiled .  
i replaced the kernel RPM files in the SLE-12-SP4-Desktop-DVD-x86\_64-GM-DVD1\suse\x86\_64 folder and renamed them as the original file .  
and then used mksusecd to create another ISO.

While installation, installer shows a check-sum error mismatch but allows to ignore and proceed .  
with this, the PC is booting with the modified kernel .

But I dont think this is the right process .

could someone guide what is the right process for the same ?

Thanks