There's no emunandtool, so I have to use dd, a utility I am tempted to call "Disk Destroyer." I tried to move my emunand partition and games from a 16GB SD to a 32GB SD using dd and I think I messed up the partition table. Everything seems fine on the 3DS, but I can't write to the card on my PC. I keep getting strange errors in syslog when I insert the card: Code: [ 25.074350] mmc0: cannot verify signal voltage switch [ 25.184338] mmc0: new ultra high speed SDR50 SDHC card at address aaaa [ 25.199483] mmcblk0: mmc0:aaaa SS32G 29.7 GiB and all sorts of weird stuff about trying to write beyond the end of the device when I try to copy files to the card. It then goes read-only. (I'm not going to attempt it again, so I can't post the specific error messages.) Here is what I did: 1. Back up emunand from old 16GB SD card: Code: dd if=/dev/mmcblk0 of=dummy.bin count=1 dd if=/dev/mmcblk0 of=emunand.bin count=1 skip=1953792 dd if=/dev/mmcblk0 of=emunand.bin count=1953791 skip=1 seek=1 2. Copy all SD content, just dragged and dropped the Nintendo folder onto my desktop. 3. Formatted/paritioned the NEW 32GB card for emunand using the gateway menu. 4. Restored my old emunand backup to the emunand partition to the card: Code: dd if=dummy.bin of=sd_tmp.bin count=1 dd if=emunand.bin of=sd_tmp.bin skip=1 seek=1 dd if=emunand.bin of=sd_tmp.bin count=1 seek=1953792 dd if=sd_tmp.bin of=/dev/mmcblk0 bs=8M rm sd_tmp.bin 5. Copied Nintendo folder SAVs, and various other 3DS cruft onto the remaining 30.8 GB partition. I think I must have screwed something up because the filemanager says I have a 30.8GB partition but the Ubuntu Disks partitioner/editor utility says something else! See screenshots. I am not sure how to use dd to properly fix the partition table. I'm pretty sure I messed it up with the restore in step 4. fdisk agrees with Disks: the partition table from my old card ended up on the new card! Code: Welcome to fdisk (util-linux 2.25.1). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. Command (m for help): p Disk /dev/mmcblk0: 29.7 GiB, 31914983424 bytes, 62333952 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x00000000 Device Boot Start End Sectors Size Id Type /dev/mmcblk0p1 2097152 31213567 29116416 13.9G c W95 FAT32 (LBA) I suppose I should actually look at the stuff I copy and paste into shell scripts out of these forums: dd if=dummy.bin of=sd_tmp.bin count=1 When restoring to a LARGER SD card, you do not want to copy the old dummy.bin! SOLVED. DOH!