I used to have to run a manual full trim about once a year to keep the speed up, but perhaps coinciding with my shift to APFS a few years ago that doesn't seem to have been necessary in recent years. The Cindori Trim apps were specifically made 'for those of us without Apple-supported SSDs' in the early years. I don't have their newest Sensei version, as I'm still on Mojave. Instead I originally used Trim Enabler, then Disk Sensei, both from Cindori. Partly because of that warning from Apple, I never used their method. It never sleeps, so that drive has been running about 6 years with no signs of quitting. The computer is a 4,1 Mac Pro, firmware upgraded to a 5,1 with dual 6-core Westmeres. It was my boot drive for 5 years, now used as a secondary with a slightly faster, newer Samsung MZ7LN on a PCIe card as boot drive.Īt a rough guess based on uptime & Activity Monitor's disk usage panel, I'm writing about 1TB, reading 500GB, per week. THAT THE ENTIRE RISK AS TO SATISFACTORY QUALITY, PERFORMANCE, ACCURACY AND EFFORT IS WITH YOU.Īnecdotally, I've been using Trim on my Samsung EVO 840 since I got it in 2014. BY USING THIS TOOL TO ENABLE TRIM, YOU AGREE THAT, TO THE EXTENT PERMITTED BY APPLICABLE LAW, USE OF THE TOOL IS AT YOUR SOLE RISK AND APPLE MAKES NO WARRANTIES,ĮXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THIS TOOL OR ITS USE ALONE OR IN COMBINATION WITH YOUR DEVICES, SYSTEMS, OR SERVICES. This tool is provided on an “as is” basis. Before using this tool, you should back up all of your data and regularly back up data while TRIM is enabled. It should not be used in a commercial operating environment or with important data. Use of this tool to enable TRIM may result in unintended data loss or data corruption. IMPORTANT NOTICE: This tool force-enables TRIM for all relevant attached devices, even though such devices may not have been validated for data integrity while using TRIM. I've heard conflicting advice on whether to enable TRIM so I went to Terminal and did a trial run even though I don't have the SSD. Note that no downloads of TRIM Enabler are hosted here.I'm receiving a Samsung 860 evo tomorrow. You can get it from the Wayback Machine instead: Download TRIM Enabler 2.2 from The Internet ArchiveĪpple added TRIM support to Mac OS X in Snow Leopard update 10.6.7, but it only works on Apple SSDs. Third party SSDs never have TRIM enabled. There is an exception: in Mac OS X 10.10.4 and later have a command you can run in a terminal called “trimforce” that will enable TRIM support for ALL SSDs, not just Apple SSDs. What do you do if you’re on an older version of OS X? Well, Apple doesn’t give you trimforce on older versions, so the only answer is to “hack” the storage driver in OS X to bypass the check. The tool of choice to do this for several years was called TRIM Enabler, with the last version supporting OS X 10.6 “Snow Leopard” being TRIM Enabler 2.2, the holy grail of flipping the TRIM switch on older OS X versions. However, sometime in 2014, the author of TRIM Enabler made it a paid program and took away the free download for TRIM Enabler 2.2, opting to only make it available if you bought a newer version despite TRIM Enabler 2.2 being totally free to download and use. There are no other downloads of the old 2.2 version available. I’m upgrading a machine stuck on 10.6.8 and I didn’t want to pay for what was once a 100% free program. I’m sharing this link to the old software to help fellow aging Mac enthusiasts out.ġ0.6 10.6.8 2.2 2006 Apple iMac Mac Mac Mini Mac OS X OS X Snow Leopard TRIM TRIM Enabler Post navigation Then I scanned the Internet Archive’s Wayback Machine and found a working DMG for TRIM Enabler 2.2 in there. TRIM is critical for SSD health over time. TRIM tells the SSD that data in a block is no longer needed. Without TRIM, the drive can’t clean itself up internally because it has to assume that any block which was written is still needed, and depending on the amount of over-provisioning in the drive, you could end up in trouble without TRIM. Flash memory doesn’t work like a normal disk it can be written in “pages” (small, i.e. 4KB) but can only be erased in “blocks” (a set of many pages, i.e. It is common for a flash block to end up with some pages used and others free, and the drive tries to get ahead of user demand by garbage collecting (consolidating) these partially filled blocks into a smaller number of blocks (that have a lot more data per block), then erasing the newly freed blocks so they’re ready to go if a big burst of disk writes comes in. TRIM is how the OS says “I’m not using this data anymore, so you can mark it as free,” so getting TRIMmed is a vital component of the SSD’s garbage collection system, not just a nice-to-have feature that magically speeds things up.
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