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This article mainly shows you "centos how to delete redundant boot items", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and learn "centos how to delete redundant boot items" this article.

After the CentOS update, the old kernel is not automatically deleted. So there will be multiple kernel options in the startup options, and you can manually delete the excess kernel using the following command:

1. Check the current kernel version of the system:

# uname-a

Linux localhost.localdomain 3.10.0-229.20.1.el7.x86_64 # 1 SMP Tue Nov 3 19:10:07 UTC 201 GNU/Linux

two。 Check all the kernel RPM packages on the system:

# rpm-qa | grep kernel

Kernel-3.10.0-229.14.1.el7.x86_64

Kernel-3.10.0-229.el7.x86_64

Abrt-addon-kerneloops-2.1.11-22.el7.centos.0.1.x86_64

Kernel-tools-libs-3.10.0-229.20.1.el7.x86_64

Kernel-3.10.0-229.20.1.el7.x86_64

Kernel-tools-3.10.0-229.20.1.el7.x86_64

3. Delete the RPM package of the old kernel

Yum remove kernel-3.10.0-229.14.1.el7

Yum remove kernel-3.10.0-229.el7

4. Restart the system

# reboot

Note: no manual modification of / boot/grub/menu.lst is required

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