Question

4

Is it possible that I have more than one Linux kernel installed?

rated 0 times [ 4] [ 0] / answers: 1 / hits: 14589 / 1 Year ago, wed, april 5, 2023, 1:24:28

I was reading this. It's about detecting installed kernels. KERNELS???!! Is it possible that I have more than a kernel?? How is that??!!!!!

...so I followed the command in the instructions and this is my output:

username@hostname:~$ dpkg --list | grep linux-image

rc  linux-image-3.11.0-12-generic             3.11.0-12.19                                 i386         Linux kernel image for version 3.11.0 on 32 bit x86 SMP

ii  linux-image-3.11.0-13-generic             3.11.0-13.20                                 i386         Linux kernel image for version 3.11.0 on 32 bit x86 SMP

ii  linux-image-3.11.0-14-generic             3.11.0-14.21                                 i386         Linux kernel image for version 3.11.0 on 32 bit x86 SMP

ii  linux-image-3.11.0-15-generic             3.11.0-15.25                                 i386         Linux kernel image for version 3.11.0 on 32 bit x86 SMP

ii  linux-image-3.11.0-17-generic             3.11.0-17.31                                 i386         Linux kernel image for version 3.11.0 on 32 bit x86 SMP

ii  linux-image-3.11.0-18-generic             3.11.0-18.32                                 i386         Linux kernel image for version 3.11.0 on 32 bit x86 SMP

rc  linux-image-3.8.0-19-generic              3.8.0-19.30                                  i386         Linux kernel image for version 3.8.0 on 32 bit x86 SMP

rc  linux-image-3.8.0-25-generic              3.8.0-25.37                                  i386         Linux kernel image for version 3.8.0 on 32 bit x86 SMP

rc  linux-image-3.8.0-26-generic              3.8.0-26.38                                  i386         Linux kernel image for version 3.8.0 on 32 bit x86 SMP

rc  linux-image-3.8.0-27-generic              3.8.0-27.40                                  i386         Linux kernel image for version 3.8.0 on 32 bit x86 SMP

rc  linux-image-3.8.0-30-generic              3.8.0-30.44                                  i386         Linux kernel image for version 3.8.0 on 32 bit x86 SMP

ii  linux-image-3.8.0-31-generic              3.8.0-31.46                                  i386         Linux kernel image for version 3.8.0 on 32 bit x86 SMP

rc  linux-image-extra-3.11.0-12-generic       3.11.0-12.19                                 i386         Linux kernel extra modules for version 3.11.0 on 32 bit x86 SMP

ii  linux-image-extra-3.11.0-13-generic       3.11.0-13.20                                 i386         Linux kernel extra modules for version 3.11.0 on 32 bit x86 SMP

ii  linux-image-extra-3.11.0-14-generic       3.11.0-14.21                                 i386         Linux kernel extra modules for version 3.11.0 on 32 bit x86 SMP

ii  linux-image-extra-3.11.0-15-generic       3.11.0-15.25                                 i386         Linux kernel extra modules for version 3.11.0 on 32 bit x86 SMP

ii  linux-image-extra-3.11.0-17-generic       3.11.0-17.31                                 i386         Linux kernel extra modules for version 3.11.0 on 32 bit x86 SMP

ii  linux-image-extra-3.11.0-18-generic       3.11.0-18.32                                 i386         Linux kernel extra modules for version 3.11.0 on 32 bit x86 SMP

rc  linux-image-extra-3.8.0-19-generic        3.8.0-19.30                                  i386         Linux kernel image for version 3.8.0 on 32 bit x86 SMP

rc  linux-image-extra-3.8.0-25-generic        3.8.0-25.37                                  i386         Linux kernel image for version 3.8.0 on 32 bit x86 SMP

rc  linux-image-extra-3.8.0-26-generic        3.8.0-26.38                                  i386         Linux kernel image for version 3.8.0 on 32 bit x86 SMP

rc  linux-image-extra-3.8.0-27-generic        3.8.0-27.40                                  i386         Linux kernel image for version 3.8.0 on 32 bit x86 SMP

rc  linux-image-extra-3.8.0-30-generic        3.8.0-30.44                                  i386         Linux kernel image for version 3.8.0 on 32 bit x86 SMP

ii  linux-image-extra-3.8.0-31-generic        3.8.0-31.46                                  i386         Linux kernel image for version 3.8.0 on 32 bit x86 SMP

ii  linux-image-generic                       3.11.0.18.19                                 i386         Generic Linux kernel image

username@hostname:~$

Woah! Hold on a second!! So those things are kernels???!! And I had all that in my system and I didn't know??! I didn't install anything!! Or maybe it's the update manager that did this? ... ... ...If it's true then do I need all this?? If no then it should be taking up lots of space of my drive!! And then how do I clean up??

Please explain as much details as possible! It seems that there's a lot that I don't understand!

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answered 1 Year ago attagjump · Accepted Answer

The kernel can be updated during a normal update. All the kernels remain on the hard disk and should be able to be booted from the grub menu presented at boot time. I keep the old kernels, there is no harm in doing so.