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[MrBananaMan]

what exactly does trim do and is it usually safe to use on every game? do some games get messed up down the road in some spots with it trimmed? how much space can you save?

[iignotus]

Roms are dumped to the full size of the chip they're stored on, no matter how large the actual code segment is. A game could only have 35mb of data to it, but if the nearest sized chip is 64mb (512Mbit), that will be used since a 32mb (256Mbit) chip would not hold it all. Trimming the Rom removes this extra space at the end of the file to save room on your memory card. However, I've heard that due to the way data segments are stored in DS games, things like wireless play may stop functioning with trimmed roms; though this has never happened to me personally.

It's usually safe to trim roms. You should do it to all of them, and only stop if you encounter problems.

[MrBananaMan]

thanks for the reply.

[Banjojohn]

The savegame has nothing to do with the trimming, right. I have lots of games, that i've played non-trimmed. Those savegames can easily be used, if I trim the games, right?

[Devil_Spawn]

The savegame has nothing to do with the trimming, right. I have lots of games, that i've played non-trimmed. Those savegames can easily be used, if I trim the games, right?

this is correct