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e2fsck — Check a Linux ext2/ext3/ext4 filesystem. The partition should be unmounted. More information: <https

Submitted by: @import:tldr-pages··
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commandext3ext4e2fsckclichecklinuxext2
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Problem

How to use the e2fsck command: Check a Linux ext2/ext3/ext4 filesystem. The partition should be unmounted. More information: <https://manned.org/e2fsck>.

Solution

e2fsck — Check a Linux ext2/ext3/ext4 filesystem. The partition should be unmounted. More information: <https://manned.org/e2fsck>.

Check filesystem, reporting any damaged blocks:
sudo e2fsck {{/dev/sdXN}}


Check filesystem and automatically repair ([p]reen) any damaged blocks:
sudo e2fsck -p {{/dev/sdXN}}


Check filesystem in read only mode:
sudo e2fsck -c {{/dev/sdXN}}


[f]orce checking even if the filesystem seems clean:
sudo e2fsck -f {{/dev/sdXN}}


Perform an exhaustive, non-destructive read-write test for bad blocks and blacklist them:
sudo e2fsck -fccky {{/dev/sdXN}}

Code Snippets

Check filesystem, reporting any damaged blocks

sudo e2fsck {{/dev/sdXN}}

Check filesystem and automatically repair ([p]reen) any damaged blocks

sudo e2fsck -p {{/dev/sdXN}}

Check filesystem in read only mode

sudo e2fsck -c {{/dev/sdXN}}

[f]orce checking even if the filesystem seems clean

sudo e2fsck -f {{/dev/sdXN}}

Perform an exhaustive, non-destructive read-write test for bad blocks and blacklist them

sudo e2fsck -fccky {{/dev/sdXN}}

Context

tldr-pages: linux/e2fsck

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