我已经安装了 Arch Linux /dev/sda2，它被标记为boot.
但我所有的旧文件和文档都/dev/sda1无法访问。
当我运行时sudo mount /dev/sda1 /mnt，出现错误：
mount: /mnt: wrong fs type, bad option, bad superblock on /dev/sda1, missing codepage or helper program, or other error.
如何恢复我所有的旧文件？
输出fdisk -l：
Disk /dev/sda: 298.09 GiB, 320072933376 bytes, 625142448 sectors
Disk model: HGST HTS545032A7
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0xe324f148
Device Boot Start End Sectors Size Id Type
/dev/sda1 2048 534985522 534983475 255.1G 83 Linux
/dev/sda2 * 541278208 625142447 83864240 40G 83 Linux
/dev/sda3 534986752 541278207 6291456 3G 83 Linux
Partition table entries are not in disk order.
/dev/sda3是一个交换
输出lsblk /dev/sda1：
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda1 8:1 0 255.1G 0 part
输出file -s /dev/sda1
/dev/sda1: Linux rev 1.0 ext4 filesystem data, UUID=c5c99a23-3374-4e5f-acf0-8ecd014e26cd (extents) (64bit) (large files) (huge files)
输出e2fsck -f -n /dev/sda1
e2fsck 1.45.6 (20-Mar-2020)
The filesystem size (according to the superblock) is 78142464 blocks
The physical size of the device is 66872934 blocks
Either the superblock or the partition table is likely to be corrupt!
Abort? no
Pass 1: Checking inodes, blocks, and sizes
Inode 789314 extent tree (at level 2) could be narrower. Optimize? no
Inode 813861 extent tree (at level 1) could be narrower. Optimize? no
Inode 1322338 extent tree (at level 1) could be shorter. Optimize? no
Error reading block 67108896 (Invalid argument) while getting next inode from scan. Ignore error? no
Error while scanning inodes (16654338): Can't read next inode
e2fsck: aborted