White Paper: The TRIM Command



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OK; first things first, Windows XP is no longer a fully supported OS.
What this means to the end user is that nothing will be added,
therefore no TRIM support is in the future for XP. However WIN 7 is
written on a Vista skeleton, so many drivers will work back and forth
between the two. Note I said many that does not mean all.

there will not be TRIM support for XP unless written by the Hrd DRV
manufacturer. If you want to know if trim is working open a DOS prompt
(as am Administrator) in 7 definitely, probably in Vista as well, I
doubt this command exists in XP at all.  Type "fsutil behavior query
DisableDeletNotify" hit enter, if your return is DisableDeletNotify =0
Trim is enabled and functional, if the equals is =1 it is not. So either
you need to flash the SSD firmware if available, or it will not be
working on your drive.

As for support that is questionable as well
as dependant on exactly who you get if you call support, and there
knowledge level. So even if it is or is nor supported by your drive the
easiest way to find out is through the admin DOS prompt as I outlined. I
would copy that command and paste it unless you wanna type if over and
over. The reason I say this is it usually take a few times beforre it
will work correctly. I was also told "by a support rep", that I would
have to enable AHCI mode which is also untrue. It works physically on my
computer in sata mode although I do have raid mode enable in BIOS,
which means the MB may be running SATA/AHCI mode by default.

system won on hothardware.com From the site CyberPower PC, Thermaltake,
Intel, and Kingston (I added the second GPU from my existing system
when I won), I also added the two (WD, Samsung) harddrives from my old
system. I then incorporated my old system with my wifes old computer and
built her an AMD Phenom II X4 BE 965 C3 barn burner, then took all the
excess parts and some I had around the house and built another system
for a familyeithout the means to buy a computer (there daughter is about
to start school so they needed one)!

       Machine name: rapid1
Operating System: Windows 7 Ultimate 64-bit (6.1, Build 7600)
Manufacturer: Gigabyte Technology Co., Ltd.
       System Model:
               BIOS: Award Modular BIOS v6.00PG
Processor: Intel(R) Core(TM) i7 CPU         930  @ 2.80GHz (8 CPUs),
             Memory: 6144MB RAM
Available OS Memory:
6142MB RAM
          Page File: 1589MB used, 6599MB available
Windows Dir: C:\Windows
    DirectX Version: DirectX 11
DX Setup
Parameters: Not found
     Graphics Card1: ATI Radeon HD 5800 Series
Graphics Card2: ATI Radeon HD 5800 Series

      Drive: C:
Space: 40.0 GB
      Model: KINGSTON SNV325S2 ATA Device

Drive: M: (Media)
 Free Space: 695.4 GB
      Model: WDC
WD7501AALS-00E8B0 ATA Device

      Drive: P: (Programs)
Space: 399.4 GB
      Model: SAMSUNG HD753LJ ATA Device

Drive: S: (Backup
 Free Space: 233.7 GB
      Model: SAMSUNG
HD753LJ ATA Device

      Drive: U: (Virtual Memory 1)
Space: 4.0 GB
      Model: WDC WD7501AALS-00E8B0 ATA Device

Drive: V: (Virtual Memory 2)
 Free Space: 4.0 GB

      Drive: D:
      Drive: K:
Model: HL-DT-ST DVDRAM GH24NS50 ATA Device



I have to agree with you here. A lot of the ssd articles on maxpc seem to just be regurgitated snippets from other tech sites. They rarely ever contain hard data, merely hearsay. Also, SSD technology is so different from current drive technology that the methods we have previously used to test drives are being rendered useless. If you want the real down and dirty about SSDs head over to anandtech. Hes been doing real research for some time now and can show hard data to back up the findings.



Been watching SSDs thinking of purchasing, but how the heck do I differenciate which drives support trim and which don't. Am not buying a trim-less drive.




Windows 7 requests the Trim operation for more than just file delete operations. The Trim operation is fully integrated with partition- and volume-level commands like Format and Delete, with file system commands relating to truncate and compression, and with the System Restore (aka Volume Snapshot) feature.


"Or are they just planning on forcing people to either update to Win7 or use a wiper.exe app on a regular basis? "

I wouldn't consider it forcing.  You don't have to use TRIM at all.  And you don't have to upgrade, but native support for TRIM might certainly be a benefit that will impact your decision to upgrade or switch to Linux.  As of right now, your only option is to use the tools provided by the drive manufacturers.  They didn't have to provide those tools either by the way.

It's also worth noting that SSDs are still relatively new consumer technology.  And like any new technology, the first adopters are always going to feel the growing pains.  So, you may feel like you're being forced into a decision, but this is what you signed on for whether you knew it or not.



So it sounds like TRIM support is not on WindowsXP or Vista.  Do you know if there are any plans to add it to those systems?  Or are they just planning on forcing people to either update to Win7 or use a wiper.exe app on a regular basis?

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