ptutil

Partitiontable manipulation utility is created to do modifications to an already existing partition table. For embedded devices often it is needed to have a primary and a backup root file system. To switch between them in case of a software update or a corrupted primary system without an user interaction, this tool could help.

Table of Contents

• What's new
• Dependencies
• How to build
• Example

Versioning

major.minor.patch

What's new

Version 0.1.0: First version for gpt manipulation (x64 tested only)

• gpt header validation and invalidation
• dumping gpt and partition entries

Dependencies

• gcc >= 4.7.3 (c11 support)
• GTest (optional)

How to build

mkdir build && cd build
cmake ..
make

Example

# To validate primary gpt:
./ptutil --primary --validate ./disk.img

# Invalidates the primary gpt:
./ptutil --primary --invalidate ./disk.img

# To repair an invalidated gpt header call:
./ptutil --primary --validate -r ./disk.img

To dump informations:

./ptutil --primary -d ./disk.img