Remove the redundant kernel after Linux update
I use the FREDOA 21 in order to make the network card driver unknowingly upgraded several systems, each boot after a number of cores let me choose, really a headache, especially like Bo Master this kind of forced people, looking at the upset, so I want to delete the redundant kernel, recommended to retain two cores, a loaded up-to-date, One is the bottom version of the stable, double insurance for a rainy day, began to think very complex, after all, is the core, I also want to engage in operating system, the core of this study, work. But later thought, actually the kernel sounds tall, that is, a software is not.
1. First look at the kernel you are using now do not delete the wrong:
uname-a
2. Then find and show how many kernels and related versions of the files you have now:
Rpm-qa | grep kernel
3. Now select the kernel you need to delete and the relevant files
yum Remove kernel-3.1xxxx ....
yum Remove Kernel+headers .....
4. This will be OK, if the restart after the table of knowledge is still entering/etc to find grub2.cfg Some grub2-ef.cfg delete the information inside, is the information displayed when the boot, so it is completely OK.
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Remove the redundant kernel after Linux update
