我的外置硬盘有两个分区。sdb1关闭笔记本电脑并再次打开后，分区仍然丢失。但如果我在格式化驱动器后重新启动，驱动器可以正常工作。但是一旦我关闭并再次打开，驱动器就会丢失。我尝试格式化并重新分区几次。自从我将驱动器从 转换为 以来，问题就出现了fat32。ext4但sdb2工作正常。
我是新手。我有该驱动器的备份，但我想修复它。请帮助我。
更新：我现在创建了 3 个分区。sdb1仍然不起作用。sdb2 & sdb3仍然是工作文件。所以我删除了sdb1它并保持未分配状态，因为如果我保留它，引导加载会非常慢。可能需要 2 分钟。这不是解决方案，所以如果有人能帮助我，我将不胜感激。谢谢
这是 Gnome Gparted 显示的内容。
e2label: Attempt to read block from filesystem resulted in short read while trying to open /dev/sdb1 Couldn't find valid filesystem superblock. tune2fs 1.45.5 (07-Jan-2020) tune2fs: Attempt to read block from filesystem resulted in short read while trying to open /dev/sdb1 Couldn't find valid filesystem superblock. Couldn't find valid filesystem superblock. dumpe2fs 1.45.5 (07-Jan-2020) dumpe2fs: Attempt to read block from filesystem resulted in short read while trying to open /dev/sdb1 Unable to read the contents of this file system! Because of this some operations may be unavailable. The cause might be a missing software package. The following list of software packages is required for ext4 file system support: e2fsprogs v1.41+.
命令 blkid
/dev/sdb2: LABEL="DEVPOINT"
UUID="27fef8c5-4bf0-4af2-b974-095943ef1a97" TYPE="ext4"
PARTUUID="dae1d3d3-72c5-41b3-a9a9-b2e323af02ff" /dev/sda1:
UUID="385D-275B" TYPE="vfat" PARTUUID="0000a47d-01"
sudo fdisk -l
Disk /dev/sdb: 931.53 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: TOSHIBA MQ01ABD1
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: gpt
Disk identifier: 047BA8A3-3425-48BC-8983-62CFCDD18ADB
Device Start End Sectors Size Type
/dev/sdb1 2048 996300799 996298752 475.1G Linux filesystem
/dev/sdb2 996300800 1953523711 957222912 456.5G Linux filesystem
Disk /dev/sda: 223.58 GiB, 240057409536 bytes, 468862128 sectors
Disk model: Corsair Force LE
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x0000a47d
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 1953791 1951744 953M ef EFI (FAT-12/16/32)
/dev/sda2 1955838 468860927 466905090 222.7G 5 Extended
/dev/sda5 1955840 468860927 466905088 222.7G 83 Linux