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Windows 7: Samsung Magician and TRIM message

31 Mar 2014   #1

Windows 7x64 Home Premium service pack 1
Samsung Magician and TRIM message

I recently installed a Samsung 840 EVO 500GB SSD. I checked first off and TRIM is on. However, when I run the Magician it tells me that my OS(7 x64) doesn't support TRIM. Is it telling me that it doesn't now because Samsung is in charge? Any ideas? Thank you.

My System SpecsSystem Spec
31 Mar 2014   #2

Windows 7 Ultimate x64

See this page for instructions on checking if TRIM is enabled in Windows 7 (use the fsutil method):

Verify That TRIM Is Enabled In Windows 7 | gHacks Technology News

About Samsung "Magician", it purposely interferes with sleep and should NEVER be left running. It's easy to miss, hidden in the notification area as it will be when you close the program. (That's why the default should be "always show" for new icons.) I wrote about the BSOD it caused me here, which was the first BSOD I've seen in several years:

It was a strange day - BSOD, Samsung Magician, Intel RST, hybrid sleep... - [H]ard|Forum

After you finish with it, visit the system tray and close it through its icon. It does not install drivers or leave any services running, so it's safe to use as long as you remember to close it for real. Here are a couple of supporting messages about Magician and sleep, both occurring in threads where people discuss BSODs and attribute it to "Magician":

[SOLVED] ntoskrnl.exe - Tech Support Forum
Samsung SSD Magician - Overclockers UK Forums

Now if you take the Samsung claims about sleep seriously, I'd recommend secure-erasing the drive and exchanging it for something else.

The only reason I have to run Magician is to use its optimizer function, which does a manual TRIM, which I find necessary to do immediately after encrypting a system drive with TrueCrypt. While TrueCrypt doesn't block TRIM on partitions within the scope of system encryption, it doesn't appear to generate any TRIM commands when encrypting a system drive. That is, after doing the system encryption, hours later, I can boot into Parted Magic and examine the disk outside of TrueCrypt with the supplied hex editor. I've found Samsung, Intel, and Crucial drives to be fully filled with gibberish, whereas if TRIM had run, they would contain vast swaths of zeroed sectors. Booting back into Windows, running the Samsung and Intel optimizers on their respective drives, and redoing the Parted Magic test, I find the expected zeroed sectors amidst the encrypted gibberish. Unfortunately, Crucial provides no such software, and the Intel and Samsung programs won't work on Crucial drives, but I achieved the same effect on my M500 using the Sysinternals sdelete to wipe free space.
My System SpecsSystem Spec
01 Apr 2014   #3

Windows 7 Home Premium 64 bit sp1

Quote   Quote: Originally Posted by dancinbear View Post
I recently installed a Samsung 840 EVO 500GB SSD. I checked first off and TRIM is on. However, when I run the Magician it tells me that my OS(7 x64) doesn't support TRIM. Is it telling me that it doesn't now because Samsung is in charge? Any ideas? Thank you.
Are you sure that it says your OS does not support Trim. I have attached a screen shot showing my Samsung 840 Pro 256Gb SSD. If you refer to the screen shot is says IF, not that it does not support Trim.

Samsung Magician and TRIM message-samsung_trim_support.png

My System SpecsSystem Spec

03 Apr 2014   #4

Windows 7x64 Home Premium service pack 1

Thanks to everyone, especially those who queried my reading skills. Up to this point I have had no problems with this drive coming out of sleep mode. So far, my only problem appears to be reading 101. My sincere thanks to all respondents,
My System SpecsSystem Spec

 Samsung Magician and TRIM message

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