无法修复损坏的驱动器

如何解决无法修复损坏的驱动器

设备 A 有 3 个分区。第一个分区挂载在主机 A (ext4) 上。我在主机 B 上安装了相同的分区（天哪！我为什么要这样做？）这使主机 A 中的文件系统成为只读的。主机 A 上没有挂载其他设备。我无法在主机 A 上挂载其他分区。第一个分区已从主机 B 上卸载。但是，主机 A 上的分区仍处于只读状态。我不知道如何安全地修复分区，因为我拥有所有文件和操作系统代码。我无法创建备份，因为没有安装其他分区。

错误：

[    4.079185] EXT4-fs error (device ngd-blk1): ext4_validate_block_bitmap:385: comm systemd-tmpfile: bg 289: bad block bitmap checksum
[    4.095477] Aborting journal on device ngd-blk1-8.
[    4.117064] EXT4-fs (ngd-blk1): Remounting filesystem read-only
[    4.122997] EXT4-fs error (device xxx) in ext4_free_blocks:4973: Filesystem Failed CRC
[    4.141449] EXT4-fs error (device xxx) in ext4_do_update_inode:5149: Journal has aborted
[    4.162541] EXT4-fs error (device xxx) in ext4_do_update_inode:5149: Journal has aborted
[    4.173726] EXT4-fs error (device xxx) in ext4_ext_remove_space:3067: IO failure
[    4.182532] EXT4-fs error (device xxx) in ext4_do_update_inode:5149: Journal has aborted
[    4.195663] EXT4-fs error (device xxx) in ext4_truncate:4420: IO failure
[    4.206581] EXT4-fs error (device xxx): ext4_evict_inode:283: comm systemd-tmpfile: Couldn't truncate inode 2359299 (err -30)
[    4.226586] EXT4-fs error (device xxx) in ext4_evict_inode:294: IO failure