更新系統(Arch Linux)

$ pacman -Syu

$ pacman -Syyu

$ yay -Syu

error: failed to commit transaction (invalid or corrupted package)

$ pacman -Sy archlinux-keyring

The requested URL returned error: 404

$ pacman -Syu

cannot open root device

1. 使用和系統相同的Live CD/USB開機

code:bash

sudo fdisk -l

sudo mount /dev/sdax /mnt

sudo mount --bind /dev /mnt/dev

sudo mount --bind /dev/pts /mnt/dev/pts

sudo mount --bind /proc /mnt/proc

sudo mount --bind /sys /mnt/sys

sudo chroot /mnt fish

例如位在EFI分割區上

code:bash

sudo mount /dev/sday /mnt/boot

3. 重新產生initramfs檔案

code:bash

mkinitcpio -p linux

4. 再次重新啟動