william@beaglebone:~$ apt-cache search linux-image |grep 4.1
Too much output here to view. Narrow search parameters assuming I want a bone kernel, and not ti kernel.
william@beaglebone:~$ apt-cache search linux-image |grep 4.1bone
linux-image-4.0.4-bone4 - Linux kernel, version 4.0.4-bone4
linux-image-4.1.14-bone-rt-r17 - Linux kernel, version 4.1.14-bone-rt-r17
linux-image-4.1.14-bone17 - Linux kernel, version 4.1.14-bone17
linux-image-4.1.4-bone15 - Linux kernel, version 4.1.4-bone15
linux-image-4.2.4-bone2 - Linux kernel, version 4.2.4-bone2
linux-image-4.3.4-bone4 - Linux kernel, version 4.3.4-bone4
linux-image-4.5.0-rc4-bone2 - Linux kernel, version 4.5.0-rc4-bone2
Much more manageable, now I just need to pick one. In this case, let’s assume I want the latest rt image.
william@beaglebone:~$ sudo apt-get install linux-image-4.1.14-bone-rt-r17
Reading package lists… Done
Building dependency tree
Reading state information… Done
Suggested packages:
linux-firmware-image-4.1.14-bone-rt-r17
The following NEW packages will be installed:
linux-image-4.1.14-bone-rt-r17
0 upgraded, 1 newly installed, 0 to remove and 45 not upgraded.
Need to get 26.0 MB of archives.
After this operation, 64.8 MB of additional disk space will be used.
Get:1 http://repos.rcn-ee.com/debian/ wheezy/main linux-image-4.1.14-bone-rt-r17 armhf 1wheezy [26.0 MB]
Fetched 26.0 MB in 1min 13s (353 kB/s)
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = “en_US.UTF-8”
are supported and installed on your system.
perl: warning: Falling back to the standard locale (“C”).
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
Selecting previously unselected package linux-image-4.1.14-bone-rt-r17.
(Reading database … 26266 files and directories currently installed.)
Unpacking linux-image-4.1.14-bone-rt-r17 (from …/linux-image-4.1.14-bone-rt-r17_1wheezy_armhf.deb) …
Setting up linux-image-4.1.14-bone-rt-r17 (1wheezy) …
update-initramfs: Generating /boot/initrd.img-4.1.14-bone-rt-r17
zz-uenv_txt: Updating /boot/uEnv.txt [uname_r=4.1.14-bone-rt-r17]
After which we need to reboot. But first. Let’s confirm we’re not already using that kernel.
william@beaglebone:~$ uname -r
4.1.12-bone-rt-r16
william@beaglebone:~$ sudo reboot
Broadcast message from root@beaglebone (pts/0) (Thu Apr 7 15:37:25 2016):
The system is going down for reboot NOW!
Log in after reboot . . .
william@beaglebone:~$ uname -r
4.1.14-bone-rt-r17
Also keep in mind that the old kernel is still in place, and in fact can be set to be the boot kernel again by making a single modification to one file. So, if in fact you’re done with the old kernel, it may behoove you to remove it least it clogs of your storage, and you soon run out of room.