# Linux EXT3/EXT4 jbd2 filesystem Journal — file signature C0 3B 39 98 at offset 0

For Linux EXT3/EXT4 jbd2 filesystem Journal, hex signature is C0 3B 39 98; offset is 0, verified against its source on 2026-09-22.

- **Hex signature:** C0 3B 39 98 _(verified: appears in the quote below)_
- **Offset:** 0 _(verified: appears in the quote below)_
- **Format:** Linux EXT3/EXT4 jbd2 filesystem Journal _(verified: appears in the quote below)_

## What the source says

> C0 3B 39 98 | À;9˜ | 0 | | Linux EXT3/EXT4 jbd2 filesystem Journal [69] |

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-09-22. Review by: 2027-09-22.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).