我正在尝试删除加密系统中的旧内核。我得到了标记为清除的内核，但在我努力之后安装成功。
我首先删除以前内核更新留下的临时文件
$ sudo rm -rv ${TMPDIR:-/var/tmp}/mkinitramfs-*
我当前的版本号是 4.4.0-127-generic
经过多次尝试，这是我目前的列表。我试图保留 127（我的当前版本和 124）
$ dpkg -l | tail -n +6 | grep -E 'linux-image-[0-9]+'
pi linux-image-4.4.0-112-generic 4.4.0-112.135 amd64 Linux kernel image for version 4.4.0 on 64 bit x86 SMP
pi linux-image-4.4.0-116-generic 4.4.0-116.140 amd64 Linux kernel image for version 4.4.0 on 64 bit x86 SMP
pi linux-image-4.4.0-119-generic 4.4.0-119.143 amd64 Linux kernel image for version 4.4.0 on 64 bit x86 SMP
pi linux-image-4.4.0-121-generic 4.4.0-121.145 amd64 Linux kernel image for version 4.4.0 on 64 bit x86 SMP
ii linux-image-4.4.0-122-generic 4.4.0-122.146 amd64 Linux kernel image for version 4.4.0 on 64 bit x86 SMP
ii linux-image-4.4.0-124-generic 4.4.0-124.148 amd64 Linux kernel image for version 4.4.0 on 64 bit x86 SMP
ii linux-image-4.4.0-127-generic 4.4.0-127.153 amd64 Linux kernel image for version 4.4.0 on 64 bit x86 SMP
假设我尝试删除 4.4.0-119
我通过删除 initrd.img 文件释放启动空间
$ sudo update-initramfs -d -k 4.4.0-119-generic
update-initramfs: Deleting /boot/initrd.img-4.4.0-119-generic
我尝试清除内核
$ sudo dpkg --purge linux-image-4.4.0-119-generic linux-image-extra-4.4.0-119-generic
dpkg: dependency problems prevent removal of linux-image-4.4.0-119-generic:
linux-signed-image-4.4.0-119-generic depends on linux-image-4.4.0-119-generic (= 4.4.0-119.143).
dpkg: error processing package linux-image-4.4.0-119-generic (--purge):
dependency problems - not removing
(Reading database ... 513541 files and directories currently installed.)
Removing linux-image-extra-4.4.0-119-generic (4.4.0-119.143) ...
run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 4.4.0-119-generic /boot/vmlinuz-4.4.0-119-generic
run-parts: executing /etc/kernel/postinst.d/dkms 4.4.0-119-generic /boot/vmlinuz-4.4.0-119-generic
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 4.4.0-119-generic /boot/vmlinuz-4.4.0-119-generic
update-initramfs: Generating /boot/initrd.img-4.4.0-119-generic
run-parts: executing /etc/kernel/postinst.d/pm-utils 4.4.0-119-generic /boot/vmlinuz-4.4.0-119-generic
run-parts: executing /etc/kernel/postinst.d/unattended-upgrades 4.4.0-119-generic /boot/vmlinuz-4.4.0-119-generic
run-parts: executing /etc/kernel/postinst.d/update-notifier 4.4.0-119-generic /boot/vmlinuz-4.4.0-119-generic
run-parts: executing /etc/kernel/postinst.d/zz-update-grub 4.4.0-119-generic /boot/vmlinuz-4.4.0-119-generic
Generating grub configuration file ...
Warning: Setting GRUB_TIMEOUT to a non-zero value when GRUB_HIDDEN_TIMEOUT is set is no longer supported.
Found linux image: /boot/vmlinuz-4.4.0-127-generic
Found initrd image: /boot/initrd.img-4.4.0-127-generic
Found linux image: /boot/vmlinuz-4.4.0-124-generic
Found initrd image: /boot/initrd.img-4.4.0-124-generic
Found linux image: /boot/vmlinuz-4.4.0-122-generic
Found initrd image: /boot/initrd.img-4.4.0-122-generic
Found linux image: /boot/vmlinuz-4.4.0-121-generic
Found initrd image: /boot/initrd.img-4.4.0-121-generic
Found linux image: /boot/vmlinuz-4.4.0-119-generic
Found initrd image: /boot/initrd.img-4.4.0-119-generic
Found linux image: /boot/vmlinuz-4.4.0-116-generic
Found initrd image: /boot/initrd.img-4.4.0-116-generic
Found linux image: /boot/vmlinuz-4.4.0-112-generic
done
Purging configuration files for linux-image-extra-4.4.0-119-generic (4.4.0-119.143) ...
Errors were encountered while processing:
linux-image-4.4.0-119-generic
这样做会将内核的状态更改为 pi。这是我以前用来删除旧内核的方法。我不确定这里发生了什么变化。
答案1
查看您收到的错误消息：
dpkg: dependency problems prevent removal of linux-image-4.4.0-119-generic:
linux-signed-image-4.4.0-119-generic depends on linux-image-4.4.0-119-generic (= 4.4.0-119.143).
它告诉您，删除这些包后，该包linux-signed-image-4.4.0-119-generic将具有未满足的依赖关系。因此，解决问题的方法应该是也删除这个包，因为它属于您尝试删除的内核。
尝试这个命令：
$ sudo dpkg --purge linux-image-4.4.0-119-generic linux-image-extra-4.4.0-119-generic linux-signed-image-4.4.0-119-generic
答案2
尝试从 apt 中删除：
sudo apt remove --purge linux-image-4.4.0-119-generic linux-image-extra-4.4.0-119-generic