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removing debug and PAE kernels

asked 2015-01-13 17:53:20 -0500

george gravatar image

updated 2015-06-02 03:11:19 -0500

I want to remove kernel-3.17.8-200.fc20.i686+debug and kernel-3.17.7-200.fc20.i686+PAE Yum remove seems not working It would be nice if someone tell me the exact command to remove the above kernels george

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answered 2015-01-13 18:22:58 -0500

empateinfinito gravatar image

Hello george, first list all kernel packages installed

rpm -qa | grep -i kernel

and later make run :

yum remove packagesname

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answered 2015-01-13 18:18:46 -0500

sideburns gravatar image

The correct name for the PAE kernel you want to remove is kernel-PAE and the debug kernel is kernel-PAEdebug. To remove the kernels that you don't want, run this command as root:

yum remove kernel-PAE\*

Note that I did not specify the -y switch because this lets you see exactly what's getting removed. Also, you should know that yum will not remove the kernel that's currently in use. If you want to be sure just what kernel you're running, simply run uname -r to find out.

BTW, by default, yum only keeps the three most recent kernels of any type, removing older ones as needed. (This gives you a safety net, in case the newest doesn't work properly.) Unless you're short on space, there's generally no reason to worry about older kernels because they'll go away on their own as newer ones get installed.

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answered 2015-01-13 18:23:59 -0500

skytux gravatar image

Use yum in a terminal to install/remove/update:

$ sudo yum remove kernel-debug-3.17.8-200.fc20.i686

Same thing with kernel PAE.

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The latest kernel-3.17.8-200.fc20.i686 is also not working. when it is updated from 3.17.4 version it is installing and then hangs for more than an hour and then black screen appear with curson blinking. When I reboot from boot menu it says kernel panic -not syncing VFS : unable to mount root fs on unknown-block(0,0). The same thing happened with kernel-3.17.7-200.fc20 and kernel-3.17.6-200.fc20 Now I am using kernel-3.17.4 version. Any help is appreciated

george gravatar imagegeorge ( 2015-01-14 06:57:59 -0500 )edit

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Asked: 2015-01-13 17:53:20 -0500

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Last updated: Jan 13 '15