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Questions tagged [trim]

An SSD command that tells the drive which blocks of memory are no longer in use, allowing it to erase blocks containing deleted data.

TRIM is a command that tells a solid-state drive () that a block of memory is no longer in use and may be discarded or overwritten. It can improve drive lifespan because the drive no longer has to copy unused data during garbage collection, and can increase by increasing the number of empty pages, which can be written to more quickly than an overwrite.

Using the command requires operating-system and support. It is supported in most operating systems since around 2010.

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How to TRIM/DISCARD a whole SSD partition on Linux?

My partition /dev/sda3 on an SSD drive doesn't contain any filesystem, but it contains garbage. How do I do a TRIM/DISCARD operation on the whole partition?
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How badly do SSDs degrade without TRIM?

SSDs have been out for a few years, and have seen all kinds of usage patterns. Windows and Linux support the TRIM command, with Mac OS still trailing behind here. Update (2011): It appears OSX Snow Leopard has support for TRIM in Apple-branded…
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VirtualBox and SSD's TRIM command support

I am aware of the huge number of posts on the internet saying that this would not work and why and I really spent days looking for the solutions months ago but I've found yesterday some tips how to "enable TRIM command support" for guest machines.…
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How can I see if Windows 7 is using TRIM for my SSD drive?

I recently upgraded the firmware on my SSD to support TRIM and upgraded to Windows 7. How can I tell whether Windows is recognizing the drive as SSD and using TRIM correctly?
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SSD garbage collection time

Let's assume I store sensitive information on a SSD and I want to erase it without secure erasing the whole drive. I erase or overwrite the file. The OS supports TRIM, so the block containing the sensitive information is marked for the garbage…
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Can I use something like the SSD TRIM command on a SD card?

SSD flash hard drives have started to support TRIM in order to avoid the slowdown that occurs after a while. How do I do something similar on a SD card ? Like reformating the SD card, but at a lower-level to avoid the automatic wear-leveling.
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Virtual machines and TRIM

Although TRIM support was introduced to make SSD work better, it should also help virtual machines optimizing virtual disks (for example to know which parts of virtual disks needs no storage on physical partitions). Does any VM machine use TRIM this…
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What does TRIM on an HDD mean?

I was examining a new hard drive when I noticed something peculiar: It's a 1 TB HDD from Seagate, and CrystalDiskInfo shows that it supports TRIM! AFAIK, TRIM is some SSD feature that allows the controller to recycle and erased unused pages for…
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Best program to trim silence beginning and end of mp3 files?

I have a bunch of mp3 files that have silence at the beginnings and ends, is there any program to trim this automatically? I would prefer that I can just give it a list of files to trim as opposed to having to do them individually.
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SSD: "The volume is too fragmented to complete this operation"

I am currently configuring a Thinkpad E540, having inserted a 256 GB M.2 SSD into the corresponding slot, in order to run Windows 8 from the SSD instead of using the preconfigured 16 GB SSD as a cache for the hard drive. All was well at first, but…
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What is TRIM exactly?

From the Wikipedia page of TRIM I get the impression that TRIM was introduced to lower the writes to a SSD, but letter the file system taking case of which blocks are unused. If that is correct, does that mean, that SSD's that don't use TRIM writes…
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Is there Linux support for TRIM on SSD drives?

Does any know if there is a way to enable TRIM support on Linux for SSDs? This is included with Windows 7, and I was surprised that I couldn't find much information about it under Linux. Info on SSD and TRIM can be found here -…
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How should my computing tendencies change after installing a SSD?

I am about to install an Intel X25-M SSD in my MacBook. What should I know beforehand? I understand that you do not need to defrag the drive as it does not increase performance and decreases drive life. Is it correct that Mac OS X does not…
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Is TRIM supported on RAID 0 configurations for SSD drives in Windows 7?

I know this question has probably been asked at some point in the past, but I am trying to figure out if Windows 7 supports passing TRIM commands through RAID controllers yet. I am trying to decide between buying a single SSD drive and utilizing…
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Does Linux support TRIM for SSDs on LVM?

I am getting a SSD and need to know, does Linux support TRIM if I set up LVM on top of the SSD? I'm finding conflicting information. I'm currently running Ubuntu 10.10 with kernel 2.6.35-28.
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