---
type: lookup
id: g64-47-53-52-2d-31-35-34-31
asset: file-format-signatures
title: "47 53 52 2D 31 35 34 31 — File format magic numbers"
sources:
  - https://en.wikipedia.org/wiki/List_of_file_signatures
source_quote: "g64 | <https://en.wikipedia.org/wiki/Commodore_64> Commodore 64 1541 disk image (G64 format)"
generated: true
verified: false
harvested: 2026-08-03
stale_after: 2027-08-03
hex_signature: "47 53 52 2D 31 35 34 31"
offset: "0"
extension: "g64"
format: "Commodore 64 1541 disk image (G64 format)"
unverified_fields: hex_signature, offset
---
**Hex signature:** 47 53 52 2D 31 35 34 31

**Offset:** 0

**Extension:** g64

**Format:** Commodore 64 1541 disk image (G64 format)

> g64 | <https://en.wikipedia.org/wiki/Commodore_64> Commodore 64 1541 disk image (G64 format)

Source: <https://en.wikipedia.org/wiki/List_of_file_signatures>