ArkOS Dual SD Manager is a Bash script designed for ArkOS that allows easy dual SD card management.

The script automatically detects the presence of a second SD card and merges the ROM folders so the system can use both cards as a single library.

It also provides automatic save synchronization between the two cards.

• Automatic external SD card detection

• Automatic save synchronization for: .srm
.sav
.state*
.png
.cfg
.ini
.json
.dat
.bin
*.save
*save*/**
*Save*/**

• The script automatically syncs save files in both directions (This ensures your progress is never lost when switching or removing the external SD card.) :
  SD2 → SD1
SD1 → SD2
  

• Automatic switching between: Internal SD only mode
Dual SD mode
  

• Support for tools sd2 and themes sd2 scripts

• Automatic EmulationStation restart when needed.

• The background service checks the SD card status every 10 seconds.

• Internet connection (first-time install only)
• Supported SD2 card format: exFAT, FAT32
• The tools and themes folders are required.
• ArkOS system folder are required for games
• Don't use Switch to SD2 for ROMs
• Remove the SD2 card from the TF2 slot before updating the cores, portmaster, or firmware.

1. Download the ArkOS Dual SD Manager.sh script.
2. Copy it to one of the following directories: roms/tools
3. Launch it from the Tools section on your device.