This occurs during the process of removing a portable HDD from your computer.
This occurs during the process of removing a portable HDD from your computer.
It seems like a routine background process such as a virus scan is running. Open Task Manager, go to the Performance section, click on Open Resource Monitor, then in the Disk tab, you'll see the program or task accessing the drive—identified by the file name. You can monitor it if needed. For stability, avoid stopping it unless necessary; instead, let it complete naturally and then shut it down or unplug it.