![]() ![]() Folder Redirection Broken Out Of The Blue Windows. ![]() In that case, you can try to modify the registry to disable the Superfetch, Prefetcher functions. If the disk is missing from the list, then it has been detected as an SSD and will not be automatically defragmented. To do so you will want to perform the following steps: If this is the case you will want to check if the SSD has been properly detected. If the value is 3 for the Prefetch parameter that would indicate that prefetching is enabled for application launch and boot. If the superfetch and prefetch features are disabled, their registry values should be 0. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\PrefetchParameters To do so you will need to navigate to the following registry path: When looking for a solution to your problem, I stumbled upon this Opens a new window TechNet forums thread in which John Cena suggests checking the state of the features mentioned above (disk defragmentation, Superfetch, Prefetcher and ReadyBoost features). These technologies were all designed to improve performance on traditional HDDs, where random read performance could easily be a major bottleneck. The FAQ section below has some additional details.” The blog post goes on to say: “….Windows 7 will disable Superfetch, ReadyBoost, as well as boot and application launch prefetching on SSDs with good random read, random write and flush performance. Because SSDs perform extremely well on random read operations, defragmenting files isn’t helpful enough to warrant the added disk writing defragmentation produces. As stated in the Support and Q&A for Solid-State Drives Opens a new window blog on TechNet, “Windows 7 will disable disk defragmentation on SSD system drives. Some information taken from, , and, and. You will want to make sure the controller driver and MB BIOS support this option before you enable it These steps are provided at your own risk and not suggested unless you know and understand the risks. ![]() Another restart will be required to finish the driver installation. When you log in to Windows again, you’ll notice the installation of drivers for AHCI. HKEY_LOCAL_MACHINESystemCurrentControlSetServicesMsahciĥ.In the right pane, right-click Start in the Name column, and then click Modify.Ħ.In the Value data box, type 0, and then click OK.ħ.On the File menu, click Exit to close Registry Editor.Īfter this you’ll have to restart your computer, go to BIOS and enable AHCI. The detailed steps from Microsoft are as follows:Ģ.Click Start, type regedit in the Start Search box, and then press ENTER.ģ.If you receive the User Account Control dialog box, click Continue.Ĥ.Locate and then click the following registry subkey: There is one way to fix this, although you need to have knowledge of registry editing. How to enable AHCI in Windows 7 after Instalation: How do I know if TRIM is working in Windows 7?įsutil behavior query disabledeletenotifyĭisableDeleteNotify = 1 (Windows TRIM commands are disabled)ĭisableDeleteNotify = 0 (Windows TRIM commands are enabled) In the Elevated command Prompt windows, type the following:įsutil behavior set disabledeletenotify 0įsutil behavior set disabledeletenotify 1 How To Open an Elevated Command Prompt window: Click on Start Orb > Type "CMD.exe" in Search box > Right click on "CMD" and select "Run as Administrator" (If you receive a prompt confirmation, click YES) To enable or disable TRIM Command, you will need to open an Elevated Command Prompt window. How to enable TRIM Command in Windows 7 with a Solid State Drive ![]()
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