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By default, the new .chd saves to the same folder as the original. This takes double space during conversion. To save space:
pkg update && pkg upgrade -y pkg install wget -y Now, download the official MAME tools for Android (ARM64). Replace [latest_version] with the current number (check mamedev.org), for example 0.270 :
Enter . This official MAME tool compresses those bulky .bin/.cue or .gdi files into .chd (Compressed Hunks of Data) files, often shrinking them by 30–50% without losing any gameplay data or speed .
for i in *.cue; do chdman createcd -i "$i" -o "${i%.cue}.chd"; done For Dreamcast ( .gdi ), change *.cue to *.gdi and createcd to createdvd . 1. The "Multiple BIN" Trap If your game has Game.cue + Game (Track 1).bin , Game (Track 2).bin ... This is perfect. CHDMAN loves that. However , if you have a single BIN file (e.g., Game.bin only), you need a CUE sheet. You can generate a CUE sheet inside Termux: chdman android
cd storage/shared/ROMs/ToConvert To convert a single game:
chdman createcd -i "Game.cue" -o "/path/to/ExternalSD/Game.chd" Do not compress PSP ( .iso to .cso ) or Nintendo DS ( .nds ) files with CHDMAN. Those use different algorithms. Stick to PS1, Saturn, Dreamcast, Sega CD, PCE CD, and MAME Hard Drive images. Final Verdict: Is it worth it on Android? Yes. While CHDMAN is slower on an Android phone than a gaming PC, it is incredibly convenient. You can drop a folder of loose BINs on your tablet before bed, run the batch command, and wake up to a perfectly compressed library ready for DuckStation or RetroArch.
After confirming the CHD works in your emulator, delete the original .bin and .cue files to reclaim your space. Have you successfully compressed a tricky game? Let us know in the comments below! By default, the new
chdman-android-guide
ls *.bin > temp.txt # Manually edit the CUE or use an online CUE creator. Easier fix: Just use .bin files that came with a .cue .
But what if you don't want to boot up your Windows PC or Mac just to compress a ROM? chdman-android-guide ls *.bin >
Now navigate to your ROM folder:
Extract it and move CHDMAN:
By default, the new .chd saves to the same folder as the original. This takes double space during conversion. To save space:
pkg update && pkg upgrade -y pkg install wget -y Now, download the official MAME tools for Android (ARM64). Replace [latest_version] with the current number (check mamedev.org), for example 0.270 :
Enter . This official MAME tool compresses those bulky .bin/.cue or .gdi files into .chd (Compressed Hunks of Data) files, often shrinking them by 30–50% without losing any gameplay data or speed .
for i in *.cue; do chdman createcd -i "$i" -o "${i%.cue}.chd"; done For Dreamcast ( .gdi ), change *.cue to *.gdi and createcd to createdvd . 1. The "Multiple BIN" Trap If your game has Game.cue + Game (Track 1).bin , Game (Track 2).bin ... This is perfect. CHDMAN loves that. However , if you have a single BIN file (e.g., Game.bin only), you need a CUE sheet. You can generate a CUE sheet inside Termux:
cd storage/shared/ROMs/ToConvert To convert a single game:
chdman createcd -i "Game.cue" -o "/path/to/ExternalSD/Game.chd" Do not compress PSP ( .iso to .cso ) or Nintendo DS ( .nds ) files with CHDMAN. Those use different algorithms. Stick to PS1, Saturn, Dreamcast, Sega CD, PCE CD, and MAME Hard Drive images. Final Verdict: Is it worth it on Android? Yes. While CHDMAN is slower on an Android phone than a gaming PC, it is incredibly convenient. You can drop a folder of loose BINs on your tablet before bed, run the batch command, and wake up to a perfectly compressed library ready for DuckStation or RetroArch.
After confirming the CHD works in your emulator, delete the original .bin and .cue files to reclaim your space. Have you successfully compressed a tricky game? Let us know in the comments below!
chdman-android-guide
ls *.bin > temp.txt # Manually edit the CUE or use an online CUE creator. Easier fix: Just use .bin files that came with a .cue .
But what if you don't want to boot up your Windows PC or Mac just to compress a ROM?
Now navigate to your ROM folder:
Extract it and move CHDMAN:
