Replacing Switch SD card

Migration to bigger SD card

No tool under Linux can extend ExFAT filesystem. Files have to be copied.

On new SD card replicate partition layout. Disk Destroyer can be used to initialize the partition with same IDs etc. But there is no point in DD'ing data as we can't resize the filesystem afterwards.

Make sure that fdisk -l shows same details for both SD cards: new and the original.

On new SD card delete the partition and create new. Observe the starting sector number - use same as the original partition (it is not the suggested default value in my case).

Check the output of blkid to see the UUID of the original SD card filesystem.

Format new partition and set ID to be the same as original mkfs.exfat -i <UUID> <new SD card p1>. ID can also be set later with tune.exfat -I 0x<UUID in hex> <new SD card p1>.

Check again with blkid to see if UUIDs are matching. If they are not, the new card will "work" in Switch but no game will start, complaining to go back to Home screen and start it again.

Now mount both cards and copy file over to the new card.

After umount'ing you can put new card in Switch and it should work and you should have more space for games.