gptsync ☆
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Description:
GPT and MBR partition tables synchronization tool
Type: Formula  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  formulae.brew.sh
Category: System utilities
Tags: partitioning gpt mbr disk-utility bootloader system-tools
Install: brew install gptsync
About:
Gptsync is a command-line utility designed to maintain consistency between GPT (GUID Partition Table) and legacy MBR partition tables on the same disk. It resolves conflicts that can arise during dual-boot setups or disk cloning operations by synchronizing partition entries. This ensures system firmware and operating systems can reliably access disk layouts.
Key Features:
  • Bidirectional synchronization between GPT and MBR partition tables
  • Command-line interface for scripting and automation
  • Preserves existing partition data and boot configurations
  • Supports complex disk layouts with multiple operating systems
Use Cases:
  • Resolving boot issues in dual-boot Windows/macOS/Linux environments
  • Fixing partition table inconsistencies after disk cloning or resizing operations
Alternatives:
  • gdisk – gdisk is a more comprehensive GPT manipulation tool, while gptsync focuses specifically on GPT-MBR synchronization
  • fdisk – fdisk handles partition management but lacks specialized GPT-MBR synchronization capabilities
Version History
Detected Version Rev Change Commit
Sep 12, 2025 1:10pm 0 VERSION_BUMP 4408448c
Sep 12, 2024 5:49am 0 VERSION_BUMP d354d94a
Oct 2, 2023 6:59am 0 VERSION_BUMP 92d65a92
Dec 3, 2022 8:05pm 0 VERSION_BUMP 0644a672
Nov 30, 2022 4:27pm 0 VERSION_BUMP eb23820d
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