why does apt upgade generate several images

[Colin Law]

On Fri, 25 Feb 2022, 06:52 robert rottermann, <robert at redcor.ch> wrote:

> Hi there
>
> I just did an apt upgrade, the process displayed (among else):
>
> /etc/kernel/postinst.d/zz-update-grub:
> Sourcing file `/etc/default/grub'
> Sourcing file `/etc/default/grub.d/init-select.cfg'
> Generating grub configuration file ...
> Found linux image: /boot/vmlinuz-5.4.0-100-generic
> Found initrd image: /boot/initrd.img-5.4.0-100-generic
> Found linux image: /boot/vmlinuz-5.4.0-99-generic
> Found initrd image: /boot/initrd.img-5.4.0-99-generic
> Found linux image: /boot/vmlinuz-5.4.0-96-generic
> Found initrd image: /boot/initrd.img-5.4.0-96-generic
>
>
> why so many images?. Why not only one?
>

Because a couple of previous kernel versions are kept in case you find an
issue and need to go back to an earlier one.

Colin
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