Disk Write Caching is a Windows feature that engages some disk in memory and does not immediately convey it to disk. It improves system performance by using fast volatile memory (RAM) to collect write commands sent to data storage devices and cache them until the slower storage device writes them. This activity allows applications to run faster by allowing them to proceed without actually waiting for data write requests to be written to the disk. In other words, when you enable the Disk Write Caching feature on Windows 10 PC, write caching makes disk operations faster by collecting the written data in a queue in RAM. It can be written back to the disk later from the queue, resulting in faster disk operation.
While Disk Write Caching features increasing system performance. It can also increase the chances of data loss if a power outage or system fails before some data may be left in the RAM buffer and not get written to the disk.
Depending on the situation, you might want to enable or disable the Disk Write Caching feature for your external drives.
How to allow or disallow Disk Write Caching in Windows 10?
To enable or disable the Disk Write Caching feature in Windows 10, perform the following steps:-
Step 1. Open the context menu for the Start button by pressing the Windows logo + X keys simultaneously or perform a right-click on the Start button. Select Device Manager from the available options.
Alternatively, press Windows logo + R keys to open the Run dialog box. Write devmgmt.msc in the Run box and click the OK button or hit Enter from the keyboard to open the Device Manager window.
Step 2. Expand the Disk drives.
Step 3. Double click or tap on the disk you want to enable or disable write caching. The Properties dialog box opens.
Step 4. Switch to the Policies tab.
Step 5. Click the radio button “Better performance.”
Step 6. In the Write-catching policy section, tick the “Enable write caching on the device” checkbox.
Note: In the Write-catching policy section, untick the “Enable write caching on the device” checkbox. Disk Write Caching will be disabled.
Step 7. Click the OK button.
The first option, “Quick removal,” is enabled by default and disables write caching. The second option, “Better performance,” enables write caching and requires safe removal of the device.