Rom trimming? Should I do it?

Discussion in 'Supercard' started by sweis12, Dec 28, 2013.

  1. sweis12
    OP

    sweis12 GBAtemp Maniac

    Member
    1,242
    517
    Oct 20, 2013
    Saint Kitts and Nevis
    I was wondering if it is worth trimming my roms. Are there any disadvantages to trimming roms? Thanks for the help in advance. got the dstwo for christmas.
     
  2. Xexyz

    Xexyz GBATemp's™ Official Xexyz

    Member
    1,393
    470
    Jul 29, 2013
    United States
    沖縄県
    I think it just removes garbage data. You got nothing to lose.
     
    Foxi4 likes this.
  3. user64

    user64 GBAtemp Fan

    Member
    329
    48
    Aug 14, 2013
    Canada
    It really depends on the available space on your microSD card. If you have a decent amount of space to spare, I suposse it'd be a waste of your time. However, I know of no disadvantage to trimming ROMs, so you my as well do so.

    Given that I can buy a 32GB card for 15$ where I live, space shouldn't really be a problem, but there's no harm in trimming.

    NOTE: You might need to have the original untrimmed version of a ROM if you want to apply some kind of patch (i.e. translation) to it.
     
  4. sweis12
    OP

    sweis12 GBAtemp Maniac

    Member
    1,242
    517
    Oct 20, 2013
    Saint Kitts and Nevis
    Thanks, I have a 32gb class 10. I don't need to patch/translate any of my roms so I trimmed them. I saved about .5gb on 2gb of roms. Thanks for clearing this up for me. It saved space on my backupdrive too. I have about 50gb of ds roms. I trimmed them (took under 1 minute) and I saved 10gb lol.
     
  5. FAST6191

    FAST6191 Techromancer

    pip Reporter
    23,842
    9,734
    Nov 21, 2005
    United Kingdom
    Ah.

    Trimming them on a card. No downsides as you gain some space back, in some cases you can even gain quite a bit for a single ROM (whatever the compressed size is in a basic zip/rar it is probably not going to be that far off).

    Trimming them on your hard drive. Assuming you have stuck them in zip files in the first place (no reason no to really) then you will not gain anything. Trouble is if you do trim them then should you try to apply a patch/hack/translation to them now you may come up short as it might need the extra space (some patching methods dislike adding extra space to a file) and might check to make sure you have the same file to begin with.
    It is not fatal and you can probably claw it back but I do not suggest trimming for storage, especially if you zip/rar your ROMs.
     
  6. Pong20302000

    Pong20302000 making notes on everything

    Member
    8,076
    1,933
    Sep 8, 2009
    One's inner self
    depends on your card Kernel Also

    Trimming Roms can cause trouble for the Kernel and AP patches on RGF Kernel and Wood Kernel
    DSTwo should be fine tho
     
  7. sweis12
    OP

    sweis12 GBAtemp Maniac

    Member
    1,242
    517
    Oct 20, 2013
    Saint Kitts and Nevis
    I trimmed all the ones on my card. They all still work fine. I tested Mario Kart DS multi-player and it worked fine, GTS on pokemon heart gold worked fine as well. None of my roms seem corrupted. I played a little bit of all of them. It just saves me a lot of space. Thanks for all the help guys. Also, if I want to put a patch on a rom I always download a fresh rom anyways.
     
  8. user64

    user64 GBAtemp Fan

    Member
    329
    48
    Aug 14, 2013
    Canada
    I think what FAST was saying was that if you keep them on your computer's hdd/ssd in an archive format such as .zip, .7z, or .tar.gz, they won't take up more space regardless of trimming status. Given that trimming as often faster than downloading, it may be beneficial to keep the ROMs on your computer untrimmed.
     
  9. tbgtbg

    tbgtbg Shaking the ring ropes up in the sky

    Member
    1,951
    448
    Nov 27, 2006
    United States
    Yeah, I always trim them for the SD card but keep an untrimmed copy on my computer just in case. I've never really wound up needing that untrimmed one, but I have a big enough HDD that it's not going to make a difference unlike on an SD card where trimming them all could add up to fitting one or two more games.
     
  10. sweis12
    OP

    sweis12 GBAtemp Maniac

    Member
    1,242
    517
    Oct 20, 2013
    Saint Kitts and Nevis
    Update: I am using the GBA emulator, that is posted on the DSTwo website. The trimmed roms don't load. So, yea. It broke all 5 of my gba roms. Good thing I have backups.
     
  11. Xexyz

    Xexyz GBATemp's™ Official Xexyz

    Member
    1,393
    470
    Jul 29, 2013
    United States
    沖縄県
    Are you using TempGBA?
     
    Foxi4 likes this.
  12. sweis12
    OP

    sweis12 GBAtemp Maniac

    Member
    1,242
    517
    Oct 20, 2013
    Saint Kitts and Nevis
  13. Foxi4

    Foxi4 On the hunt...

    pip Reporter
    23,668
    21,702
    Sep 13, 2009
    Poland
    Gaming Grotto
    Depending on whether or not the game has some kind of an AP check which depend on the end of file junk (which is countered on most firmwares these days anyways), trimming does absolutely nothing to the game proper, it only removes garbage data that's there to "fill up" the ROM chip to its total size. It's just 0's, you're losing nothing.
     
  14. sweis12
    OP

    sweis12 GBAtemp Maniac

    Member
    1,242
    517
    Oct 20, 2013
    Saint Kitts and Nevis
    I switched to tempGBA from the one I linked before. The games run smoother, and my trimmed games work! Thanks for the help.
     
    Foxi4 and Xexyz like this.