# How to install the microcode CPU in SLES11SP4?

**URL:** <https://forums.suse.com/t/how-to-install-the-microcode-cpu-in-sles11sp4/32209>\
**Category:** SLES Hardware\
**Created:** [March 28, 2018, 10:10pm UTC](https://forums.suse.com/t/how-to-install-the-microcode-cpu-in-sles11sp4/32209 "2018-03-28T22:10:00Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![eugene\_str](https://avatars.discourse-cdn.com/v4/letter/e/f475e1/32.png) [@eugene\_str](https://forums.suse.com/u/eugene_str)\
**Post date:** [March 28, 2018, 10:10pm UTC](https://forums.suse.com/t/how-to-install-the-microcode-cpu-in-sles11sp4/32209/1 "2018-03-28T22:10:00Z")

</div>

Hi !  
How to install the microcode ( [https://downloadmirror.intel.com/27591/eng/microcode-20180312.tgz](https://downloadmirror.intel.com/27591/eng/microcode-20180312.tgz) ) CPU in SLES11SP4?

---

<div class="post-metadata">

**Author:** ![malcolmlewis](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/malcolmlewis/32/11375_2.png) [@malcolmlewis](https://forums.suse.com/u/malcolmlewis)\
**Post date:** [March 28, 2018, 10:41pm UTC](https://forums.suse.com/t/how-to-install-the-microcode-cpu-in-sles11sp4/32209/2 "2018-03-28T22:41:45Z")

</div>

[QUOTE=eugene\_str;51830]Hi !  
How to install the microcode ( [https://downloadmirror.intel.com/27591/eng/microcode-20180312.tgz](https://downloadmirror.intel.com/27591/eng/microcode-20180312.tgz) ) CPU in SLES11SP4?[/QUOTE]  
Hi and Welcome to the Forum 🙂  
This system is not registered for updates/patches etc?

You need to compile with iucode\_tool and rebuild initrd, is this on your system or available?

If you look at the spec file it shows the commands to run…  
[https://build.opensuse.org/package/view\_file/openSUSE:Factory/ucode-intel/ucode-intel.spec?expand=1](https://build.opensuse.org/package/view_file/openSUSE:Factory/ucode-intel/ucode-intel.spec?expand=1)

I see there is also a recent update for microcode\_ctl which complements this update;  
Download link: [https://download.suse.com/Download?buildid=nMTzOG1w2fU~](https://download.suse.com/Download?buildid=nMTzOG1w2fU~)