Bootcamp on SSDs - Trim

Discussion in 'MacBook Pro' started by Frozo., May 20, 2013.

  1. Frozo. Guest


    I've searched the forums but couldn't find what I was looking for, basically as I know with SSDs you need TRIM enabled, and that's fine, what I'm unsure about is whether you need TRIM on both the OS X partition and the Windows partition?

    Cheers :) :apple:
  2. SandboxGeneral Moderator emeritus


    Sep 8, 2010
    Yes its its a good idea. I run TRIM on OS X and in Windows 7 on my MacBook Pro. There are no issues that I am a aware of by doing this.
  3. Frozo. Guest

    Thank you for the response :)
  4. dusk007 macrumors 68040


    Dec 5, 2009
    You need Trim whenever you delete stuff or else it won't actually be deleted but can only be overwritten.
    I assume you delete files in Windows AND OSX.
  5. maflynn Moderator


    Staff Member

    May 3, 2009
    Yep, TRIM should be enabled in both OS's to take advantage of what TRIM does, and keep the SSD running optimally. Since its an OS level service, it needs to be enabled in both :)
  6. UBS28 macrumors 6502a

    Oct 2, 2012
    You can leave Trim disabled if the SSD has garbage collection?
  7. dusk007 macrumors 68040


    Dec 5, 2009
    Every SSD has garbage collection and it is NOT a replacement for Trim. Garbage collection works much better because it knows what data is garbage if trim is enabled. Otherwise it needs a big spare area to keep performance up and that still goes at the cost of more load and higher write amplification.
    GC was never a substitute for Trim. That is just something they told people so they wouldn't worry in the early days. Modern SSD GC relies on Trim being enabled because they usually don't keep any decent amount of spare area set aside anymore.

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