Disk
tune2fs
Adjust tunable parameters on ext2/ext3/ext4 filesystems.
Synopsis
syntax
tune2fs [OPTION]... DEVICE
Examples
Show filesystem details
sudo tune2fs -l /dev/sda1
Set volume label
sudo tune2fs -L mydata /dev/sdb1
Set fsck after 30 mounts
sudo tune2fs -c 30 /dev/sda1
Reduce reserved blocks to 1%
sudo tune2fs -m 1 /dev/sda1
Common options
| Flag | Description |
|---|---|
| -l | List filesystem superblock contents |
| -L | Set volume label |
| -c | Set max mount count before fsck |
| -i | Set check interval |
| -m | Set reserved blocks percentage |
| -j | Add journal (convert ext2 to ext3) |
About tune2fs
The `tune2fs` command adjust tunable parameters on ext2/ext3/ext4 filesystems. Disk commands handle low-level storage operations including partitioning, formatting, filesystem checks, and block device management.
These tools are critical during system installation, storage expansion, data recovery, and performance tuning. Always exercise caution — disk operations can cause data loss if used incorrectly.
The command accepts 6 commonly used flags shown above, though the full set of options is available in the man page (`man tune2fs`). The 4 examples on this page cover typical real-world usage patterns that you can copy and adapt for your own workflows.
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More Disk Commands
Other commands in the Disk category