This video demonstrates how to enable and disable disk write caching to increase system performance.
- [Instructor] In this movie, I'll show you how to enable or disable Disk Write Caching in Windows 10. Disk Write Caching is an important Windows feature that improves system performance and makes applications run a little bit faster. Disk Write Caching improves system performance by using fast volatile memory or RAM to collect write commands. It then stores this information into the hard disk which as a slow memory device can write these commands. Disk write caching allows applications to run faster by allowing them to proceed without waiting for data write requests to be written to the disk.
However, although write caching can increase system performance, it can also increase the chances of data loss if there's a power or system failure before the data from the write cache buffer can write the data over to the slower disk. Disk write caching is always enabled in Windows 10 and disabling it may hamper it's performance but there are circumstances where you may need to disable disk write caching, so let me show you how to do it, and also how to re-enable it when needed. Now you must be signed in as an administrator to enable or disable disk write caching.
And there's actually two different options depending on if you have a removable disk or an internal disk. Removable disks have disk write caching disabled by default, so you do not lose information if you quickly remove the disk without using the Safely Remove Hardware option. Internal disks have disk write caching enabled by default for better performance. So to prevent data loss you should always use the Safely Remove Hardware option on your internal disk before disconnecting them.
I'm going to go ahead and demo now, first with a thumb drive and then with an internal drive, how to enable or disable disk write caching. Start by opening up the Win X menu by pressing the Windows key and the X key at the same time, and then from the menu here choose Device Manager. Here in the Disk Drive section, open that up by clicking on the arrow on the left. And then double-click on the drive that you want to set, in this case my USB drive, and then choose the Policies tab and here you have under Removal Policy two options.
Quick Removal which is the default, this disables write caching, remember I said that for removable drives, write caching is disabled by default, so to enable it, click on Better Performance and then click OK. Now let me show you the options for permanent drives, that's these three here. Double-click on one of the drives, choose Policies, and then notice, as I said, disk write caching is enabled by default so you'll see that that's checked.
So to turn it off click on the "Turn off Windows write cache "buffer flushing on the device". Now we'll only see this option here if the disk has a separate power supply that allows the device to flush it's buffer in case of power failure. And then again notice you don't see that option for the removable drive. Now to turn off disk caching, just choose the other option. In the case of the removable drive, it's the Quick Removal option, and in the case of a fixed drive, in the Policies tab you're just going to re-enable the write caching on this device.
Now after clicking OK, you may be prompted to restart your computer, you'll have two options, Yes or No. Yes restarts the computer immediately, so be sure to save and close everything first. The No option allows you to manually restart the computer later when you're ready, your changes however will not be applied until you actually do restart the computer.
This course is also part of a series designed to help you prepare for the Microsoft exam 70-697: Configuring Windows Devices.
- Enabling disk write caching
- Creating spanned and striped volumes
- Configuring Storage Spaces
- Configuring OneDrive
- Enabling USB drives
- Clearing caches
- Fixing drives
- Troubleshooting OneDrive
- Encrypting files with EFS
- Encrypting volumes and drives with BitLocker
- Configuring share permissions