steven36 Posted November 22, 2020 Share Posted November 22, 2020 After the release of two Windows 10 feature updates and numerous cumulative updates, Microsoft has still not fixed a bug causing Windows Defrag to TRIM non-SSD drives. In May 2020, Microsoft released Windows 10 2004, the May 2020 Update, and introduced two bugs causing SSD drives to be defragged too often and for the TRIM operation to be attempted on non-SSD drives. The first bug prevented the Windows 10 Automatic Maintenance feature from remembering when a drive was last optimized when the operating system was restarted. The forgetting of the previous optimization date would cause drives, including SSD drives, to be defragged on every computer reboot. Defragging an SSD drive In September, Microsoft released the "2020-08 Cumulative Update Preview for Windows 10 Version 2004 (KB4571744)" update, which fixed the Automatic Maintenance bug causing SSD to be defragged too often. The second bug caused the Windows 10 defrag feature, Optimize Drives, to attempt to TRIM non-SSD drives. While this would not damage the drive, it does generate errors in the event log. Today, almost six months later, Microsoft has still not resolved this bug, as shown by today's test below. Defrag is still trying to TRIM a non-SSD drive Even though this bug has been reported extensively, Microsoft has also not officially acknowledged in the Windows 10 health dashboard that this bug exists. Source Link to comment Share on other sites More sharing options...
Sylence Posted November 22, 2020 Share Posted November 22, 2020 My SSD Trips/Optimizes just fine on Windows 10, in the past 4 years. Link to comment Share on other sites More sharing options...
steven36 Posted November 22, 2020 Author Share Posted November 22, 2020 1 hour ago, Sylence said: My SSD Trips/Optimizes just fine on Windows 10, in the past 4 years. It's not a SSD bug it's a bug with regular HD if you dont have a HD it don't concern you . hard drives dont need trimmed they need to be defraged but windows 10 is trying to trim them. It dont hurt HDs, it just cause Windows to spit out errors. it always worked for SSD they was a bug were it was causing SSD to be Defrag too often SSD should only be defrag once a month but they fixed that if you have done that update automatic maintenance should only Trim SSD because windows will defrag it by default . It helps if you read before commenting .. Quote Storage Optimizer will defrag an SSD once a month if volume snapshots are enabled. This is by design and necessary due to slow volsnap copy on write performance on fragmented SSD volumes." The automatic maintenance doesn't distinguish between SSD and HDD. Source: https://www.wilderssecurity.com/threads/bork-tuesday-any-problems-yet.370217/page-245#post-2922895 Its been like since June the bug came with Windows 10 version 2004 and they still don't fix it. So you need to disable auto defrag when using a Regular HD and just do it manually so it dont spit out errors . Or install a 3rd party one to auto defrag. Link to comment Share on other sites More sharing options...
SPECTRUM Posted November 22, 2020 Share Posted November 22, 2020 I guess is not really a bug, because most of the common HDDs are SMR type annd not CMR, so they require TRIM. Link to comment Share on other sites More sharing options...
mp68terr Posted November 22, 2020 Share Posted November 22, 2020 How to find out about smr v. cmr? Hardware info apps I've checked do not show this info. Is it necessary to check the hdd model then maker site? Link to comment Share on other sites More sharing options...
SPECTRUM Posted November 22, 2020 Share Posted November 22, 2020 35 minutes ago, mp68terr said: How to find out about smr v. cmr? Hardware info apps I've checked do not show this info. Is it necessary to check the hdd model then maker site? with CrystalDiskInfo I've noticed in few Seagate 2TB HDDs that have TRIM feature due are SMR type. Link to comment Share on other sites More sharing options...
steven36 Posted November 23, 2020 Author Share Posted November 23, 2020 19 hours ago, SPECTRUM said: I guess is not really a bug, because most of the common HDDs are SMR type annd not CMR, so they require TRIM. If its spiting out Errors on your PC its a bug with the defrag are it would not be spiting out errors . Link to comment Share on other sites More sharing options...
steven36 Posted November 23, 2020 Author Share Posted November 23, 2020 20 hours ago, SPECTRUM said: with CrystalDiskInfo I've noticed in few Seagate 2TB HDDs that have TRIM feature due are SMR type. If you Bought a SMR drive you got ripped Off and Most HHDs are not SMR , SMR aren't suitable to use as a main drive to run a computer from there too slow. Western Digital Fesses Up: Some Red HDDs Use Slow SMR Tech Without Disclosure https://www.tomshardware.com/news/wd-fesses-up-some-red-hdds-use-slow-smr-tech WD Red , Seagate’s Backup Plus family , Toshiba has been caught putting them in consumer units. None of these HDD manufacturers disclose the fact they selling you a slow SMR drive and a good reason to buy SSD instead Western Digital, Seagate Are Shipping Slow SMR Drives Without Informing Customers: Reports [Updated] https://www.extremetech.com/computing/309389-western-digital-seagate-reportedly-shipping-slow-smr-drives-without-informing-customers Customers have already been burned by the swap. If you’ve already used PMR-based WD Red drives in your RAID array, attempting to include SMR drives may not work at all. According to Western Digital, the 8-14TB drives they sell are all based on PMR, while the 2TB-6TB parts are all SMR drives. The performance difference between the two is significant, with the 2TB -6TB drives in the 150MB/s to 180MB/s range, while the 8TB-14TB drives run at 198MB/s to 215MB/s. While SMR drives are cheaper to manufacture than PMR drives, none of the savings is being passed on to customers as far as we can tell. Quote SMR uses perpendicular magnetic recording, making it a form of PMR. Since calling SMR PMR would be accurate, the original PMR was renamed CMR, conventional magnetic recording, to eliminate ambiguity. List of WD CMR and SMR hard drives (HDD) https://nascompares.com/answer/list-of-wd-cmr-and-smr-hard-drives-hdd/ List of Seagate internal CMR and SMR hard drives (HDD) https://www.seagate.com/ca/en/internal-hard-drives/cmr-smr-list/ WD Red SMR vs CMR Tested Avoid Red SMR https://www.servethehome.com/wd-red-smr-vs-cmr-tested-avoid-red-smr/ Quote CMR, which stands for conventional magnetic recording. This has been the standard technology behind hard drive data storage since the mid-2000s. Data is written on magnetic tracks that are side-by-side, do not overlap, and write operations on one track do not affect its neighbors. Most people that use HDD are using CMR For Drive C , SMR is new , And most people that buy new PCs use SSD instead even many OLD PCs they use SSD instead. If you have CMR drives hooked up with SMR it can cause bad problems besides the fact there slower than CMR . Link to comment Share on other sites More sharing options...
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