partition-backup

Overview

Before flashing experimental kernels, custom ROMs, GSI images, or low-level root modifications, creating raw block-level backups of critical partitions (such as boot, init_boot, vendor_boot, persist, and modem efs) is the single most effective insurance policy against bricking an Android device.

Developed by rhythmcache, partition-backup is a comprehensive system utility that simplifies the extraction and archival of raw partition images. Providing both a standalone command-line executable (partition) and an integrated WebUI dashboard for modern root managers, it allows users to safely dump and restore partition blocks without requiring a PC or tethered ADB connection.

Command-Line Interface (partition)

Run the partition command with root privileges inside Termux:

Usage: partition [OPTIONS]

Options:
  -b, --backup PARTITIONS     Backup partitions (comma-separated list, e.g. boot,vendor)
  -d, --directory DIR         Target backup directory (default: current working directory)
  -l, --list                  List all available block partitions on the device
  -h, --help                  Show help information

Common Usage Examples

1. List available partitions:

   su -c partition -l

2. Back up critical boot and vendor partitions to internal storage:

   su -c partition -b boot,vendor_boot,init_boot -d /sdcard/PartitionBackups

3. Back up all standard partitions before flashing a custom ROM:

   su -c partition -b boot,vendor,system,persist -d /sdcard/Download

WebUI Management

For users running KernelSU or APatch, the module includes an intuitive WebUI. Simply open your root manager app, navigate to the module card for Partition Backup, and tap the WebUI button to view all partitions with one-tap backup toggles.

Installation

1. Download the latest partition-backup-*.zip release.
2. Flash the module in Magisk, KernelSU, or APatch.
3. Reboot your device to enable the CLI binary and WebUI assets.