Unmount SSD drive do not work

Hi all,
When I try to unmount my SSD sanDisk pro 1 TB it tells me:
it is stil working in the background, Close the program and try again .
But there is no program running. What to do?
I made refresh few times, but it did not work.
Thanks for your help

If your SSD is your system it blocks that but CHKDSK runs from the pre boot

Hi @Mohracin
it’s frustrating when your computer won’t let you unmount your SSD! Here are some things you can try to unmount your SanDisk Pro 1TB SSD even though it says a program is using it:

Force Quit Hidden Processes:

  • Press Command + Option + Escape to open the “Force Quit Applications” window.
  • Look for any suspicious processes that might be accessing the SSD, especially background processes you’re not familiar with.
  • If you find anything suspicious, select it and click “Force Quit.”

Check System Activity Monitor:

  • Open the Activity Monitor app (located in Applications > Utilities).
  • Go to the “Disk” tab and sort by “Disk Read” or “Disk Write” to see which programs are actively accessing your storage drives.
  • Look for any abnormal disk activity associated with your SanDisk SSD. If you find anything suspicious, quit the associated program.

Check for Spotlight Indexing:

  • Spotlight, macOS’s indexing service, can sometimes lock files while indexing them. Open System Preferences > Spotlight and click on the “Privacy” tab.
  • Check if your SanDisk SSD is listed in the “Privacy” tab. If it is, click the minus sign (-) to remove it from the list. This will temporarily disable Spotlight indexing for the drive, allowing you to unmount it.

Restart Your Mac:

  • Sometimes, a simple restart can clear up temporary processes that might be preventing you from unmounting the drive.

Additional Tips:

  • Make sure you haven’t accidentally left any files open on the SSD.
  • Try a different USB port.
  • Update your macOS software to the latest version.
  • If none of the above solutions work, try using a third-party disk utility app to force unmount the drive. However, use such tools with caution as they can potentially corrupt data.

As a last resort, you can try manually ejecting the drive:

  • Open Finder and locate your SanDisk SSD.
  • Hold down the “Option” key and click on the “Eject” button next to the drive.
  • If a warning message pops up, choose “Force Eject.”

Please note that forcefully ejecting the drive might lead to data corruption, so only do this as a last resort if other options haven’t worked.

I hope one of these suggestions helps you unmount your SanDisk Pro 1TB SSD! If you’re still having trouble, I recommend contacting SanDisk support for further assistance.

hi it seems to be for MAC Pc or win 11, I do not understand these commands.

I now put the pc off and eject the drive.
Thanks for your rather late respond