“pacman -Syu”“可能”破壞了我的系統，因為未安裝引導

我在我的 RaspberryPi2 上執行 4.9.61-1-ARCH armv7l。我通過升級它破壞了我的系統。為了修復它，我從另一個 Arch ARM 安裝中使用 chroot 進入 sdc2，但我沒有掛載引導分區 sdc1 是因為無能。我跑了pacman -Syu，現在我的系統再次啟動，並且只要我知道就可以正常執行，但是我收到以下警告：

[2017-11-28 22:34] [ALPM] upgraded linux-raspberrypi (4.9.61-1 -> 4.9.65-1)
[2017-11-28 22:34] [ALPM-SCRIPTLET] WARNING: /boot appears to be a seperate partition but is not mounted.
[2017-11-28 22:34] [ALPM-SCRIPTLET]          You probably just broke your system. Congratulations.
[2017-11-28 22:34] [ALPM-SCRIPTLET] >>> Updating module dependencies. Please wait ...


[2017-11-28 22:34] [ALPM] running '99-linux-raspberrypi.hook'...
[2017-11-28 22:34] [ALPM-SCRIPTLET] ==> Building image from preset: /etc/mkinitcpio.d/linux-raspberrypi.preset: 'default'
[2017-11-28 22:34] [ALPM-SCRIPTLET]   -> -k 4.9.65-1-ARCH -c /etc/mkinitcpio.conf -g /boot/initramfs-linux.img
[2017-11-28 22:34] [ALPM-SCRIPTLET] ==> Starting build: 4.9.65-1-ARCH
[2017-11-28 22:34] [ALPM-SCRIPTLET]   -> Running build hook: [base]
[2017-11-28 22:34] [ALPM-SCRIPTLET]   -> Running build hook: [udev]
[2017-11-28 22:34] [ALPM-SCRIPTLET]   -> Running build hook: [autodetect]
[2017-11-28 22:34] [ALPM-SCRIPTLET]   -> Running build hook: [modconf]
[2017-11-28 22:34] [ALPM-SCRIPTLET]   -> Running build hook: [block]
[2017-11-28 22:34] [ALPM-SCRIPTLET]   -> Running build hook: [filesystems]
[2017-11-28 22:34] [ALPM-SCRIPTLET]   -> Running build hook: [keyboard]
[2017-11-28 22:34] [ALPM-SCRIPTLET]   -> Running build hook: [fsck]
[2017-11-28 22:34] [ALPM-SCRIPTLET] ==> WARNING: No modules were added to the image. This is probably not what you want.
[2017-11-28 22:34] [ALPM-SCRIPTLET] ==> Creating gzip-compressed initcpio image: /boot/initramfs-linux.img
[2017-11-28 22:34] [ALPM-SCRIPTLET] ==> Image generation successful

另一個pacman -Syu告訴我“無事可做”

現在我想知道這是否會導致問題，也許與未來的升級有關。是否建議降級 linux-raspberrypi 並再次執行升級，或者我在這里安全水域，因為它似乎工作？

/boot 文件夾內容的修改日期與引導分區的修改日期相匹配，所以我按照評論中的建議複製了它們——工作正常。

首先，將 /boot 中的所有內容複製到一個臨時目錄，

$ sudo cp -R /boot /tmp/boot
$ ls /tmp/boot # verify that everything copied over

然後刪除 /boot 中的所有內容，

$ sudo rm -ir /boot/*

然後掛載你的引導目錄，

$ sudo mount -a # mounts all filesystems mentioned in fstab
$ sudo mount | grep boot # verify boot is mounted

然後將所有內容複製回/boot，

$ sudo cp -R /tmp/boot/* /boot/
$ ls /boot # verify files copied over successfully
$ sudo rm -rf /tmp/boot # delete temporary directory

引用自：https://unix.stackexchange.com/questions/407739