今天早上我进入了 grub 救援模式，并尝试使用 live USB 修复它，但是在运行后lilo -M /dev/sda mbr当我再次使用 live usb 启动时，在成功启动之前出现这些错误：
https://pasteboard.co/I9is2QB.jpg
此外，我的 /dev/sda 无法访问，并且分区未显示fdisk -l：
fdisk: cannot open /dev/loop0: Permission denied fdisk: cannot open /dev/loop1: Permission denied fdisk: cannot open /dev/loop2: Permission denied fdisk: cannot open /dev/loop3: Permission denied fdisk: cannot open /dev/loop4: Permission denied fdisk: cannot open /dev/loop5: Permission denied fdisk: cannot open /dev/loop6: Permission denied fdisk: cannot open /dev/sda: Permission denied fdisk: cannot open /dev/sdb: Permission denied
的输出sudo lsblk为：
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT loop0 7:0 0 1.7G 1 loop /rofs loop1 7:1 0 86.6M 1 loop /snap/core/4486 loop2 7:2 0 140M 1 loop /snap/gnome-3-26-1604/59 loop3 7:3 0 1.6M 1 loop /snap/gnome-calculator/154 loop4 7:4 0 12.2M 1 loop /snap/gnome-characters/69 loop5 7:5 0 21M 1 loop /snap/gnome-logs/25 loop6 7:6 0 3.3M 1 loop /snap/gnome-system-monitor/36 sda 8:0 0 931.5G 0 disk sdb 8:16 1 14.4G 0 disk └─sdb1 8:17 1 14.4G 0 part /cdrom sr0 11:0 1 1024M 0 rom
并且，的输出sudo fsck /dev/sda是：
fsck from util-linux 2.31.1
e2fsck 1.44.1 (24-Mar-2018)
fsck.ext2: Input/output error while trying to open /dev/sda
The superblock could not be read or does not describe a valid ext2/ext3/ext4
filesystem. If the device is valid and it really contains an ext2/ext3/ext4
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
e2fsck -b 8193 <device>
or
e2fsck -b 32768 <device>
答案1
您的问题不清楚。
这里有 2 件事。由于 pastebin 错误，您的硬盘驱动器已损坏/即将损坏，并且您似乎没有以 root 身份执行 fdisk 命令，因此它们失败了。