When an external drive starts acting up—whether it's slowing down, showing "file is corrupted," or refusing to open—running CHKDSK (Check Disk) is the standard first step for a fix. It is a built-in Windows utility that scans for and repairs file system errors and bad sectors. 🛠️ Method 1: The Quick Way (Windows File Explorer) This is the easiest method and recommended for most users. Plug in your external drive. Open File Explorer ( ) and click This PC. Right-click your external drive and select Properties.
Running chkdsk (Check Disk) on an external drive is a straightforward process, but the correct method depends on whether you are using the graphical interface (File Explorer) or the Command Prompt (which offers more control). chkdsk on external drive fix
Time: Depending on the size of your drive and the number of errors, this can take anywhere from a few minutes to several hours. When an external drive starts acting up—whether it's
Close all programs accessing the drive:
Open File Explorer → This PC → Note the drive letter of your external drive (e.g., E:, F:, G:). Mistyping this can result in CHKDSK scanning your internal system drive. Commands Tested: Step 4: Identify Your Drive Letter
Do NOT run chkdsk if:
In some cases, CHKDSK may not be able to fix errors or corruptions on an external drive. If this happens, you may need to: