And check if the Windows 'Safely Remove Hardware' works. – Hans Passant Oct 9 '11 at 15:53. Actually it seems that the CreateFile-function returns an invalid handle. This explains why locking the device fails, but why does CreateFile return an invalid handle? – lukew Oct 9 '11 at 16:19.
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Eject the CD Tray ergo open the DVD or BluRay drive in Windows 10, the example is also for Windows 8.1 and MS Server 2019, .. suitable!

1.) .. Open in Window 10 the DVD, BlueRay or CD drive from MS-Explorer!
2.) .. Eject the DVD, BluRay or CD via Windows-10 Disk Management!
3.) .. Problems with the BluRay / CD / DVD-ROM drive in Windows 10!

1.) Open in Window 10 the DVD, BluRay or CD drive from MS-Explorer!

1. Please start the MS-Explorer, for example via Windows-Logo+E Keyboard Shortcut
2. And select the CD/DVD Drive
3. Please do a right click and select Eject. (.. see Image-1 Arrow 1 to 3)
PS: Is also for BluRay Eject a easy solution!
See also: Change product key in windows 10 ► Windows 10 change password!

(Image-1) Eject eg open the dvd or cd drive in Windows-10!

2.) Eject the DVD, BluRay or CD via Windows-10 Disk Management!

Please run the Disk Management, for example via Windows-Logo+X Keyboard Shortcut and select 'Disk Management' do a right click on the CD/DVD-Rom and select Eject. (.. see Image-2 Arrow 1 to 3).
At this point you can rename eg change the Driver Letter! (.. see Image-2 Arrow-4)

(Image-2) Open the dvd or cd drive in windows 10 and change the Letter!

See also: Change product key in windows 10 || Windows 10 change password || change drive name in windows 10
This example to open the dvd or cd drive applies for: Windows 10 Pro, Enterprise, Home, Windows 8.1, Windows 8, Windows-Server 2019, 2016, 2012, Windows 7 Basic, Professional, Starter, Ultimate

3.) Problems with the BluRay-, CD, DVD ROM drive in Windows 10!

The cause of the problem may be a malfunction or failure of the BluRay / CD / DVD drive drivers. It is also possible that the drive itself is out of service.
There are several reasons and symptoms for the lack of BluRay / CD / DVD-ROM in Explorer:
If you hear a grinding noise when inserting a disc, fast, slow, it is possible that the laser is dirty or defective. If such a reaction occurs only on a DVD, the problem is with the DVD / BluRay it is possible that the disc itself has been damaged or improperly recorded. The problem may be in the drivers or the software for DVDs / CDs writing.
See: ► Find new driver software via the Windows Device Manager!
Resolving the problem of a CD / DVD-ROM drive in Windows 10, the ► Troubleshooting in Windows 10 for computer problems , Hardware and Sound, see the section Device Configuration .
If non methods help, you should revert to the previous version of the operating system, or use a Windows 10 recovery point where all devices worked stably.

(Image-3) Fix problems!

If the CD or DVD drive suddenly stops working, or disappears from the MS Explorer. For drivers, or software errors, it can be fixed with a few clicks. If the cause is hardware damage, the device should be brought to repair.

►►. . After Windows 10 Update no CD / DVD drive in the MS-Explorer!!

Finally:
This elegant solution and tips to remove a DVD or CD from the drive is not just written for Windows 10. As you can see above in Windows 10 shot screenshot, you can open this drive flip example as a solution without hesitation also apply to earlier versions of Microsoft's Windows operating systems, no matter if it is a drive on home Windows desktop PC, an external on tablet, Surface Pro / Go, or even a windows server operating system drive is.

The simple solution in this example is also suitable for Windows Server 2012 R2 and Web server 2016. It is so easy to open the DVD or CD drive! You will see that you don't have to use third-party software to eject DVDs or CDs, or for example .. OpenCloseDriveEject!

FAQ 140: Updated on: 5 September 2020 12:11

Summary :

How to delete Windows 7 after installing Windows 10? How to remove Windows 7? And the problem of how to remove Windows 7 after installing Windows 10 has become a common issue. This post will show you how to delete Windows 7 in two ways.

Quick Navigation :

Windows 10 Installations Takes up Disk Space

Microsoft cooperation provides a free upgrade to Windows 10 from Windows 7 or Windows 8.1 that ends on July 29, 2016, which attracts many users all over the world. Nowadays Windows 10 is becoming a very popular operating system because of its advantages, such as beautiful interface, short booting times, useful Cortana voice assistant, less storage used and better System Restore.

Have you upgraded your computer to Windows 10? If you have done this, the Windows 10 installation files are saved to your hard drive and take much disk space. It is not such a serious issue if there is a large hard drive on your laptop or desktop. However, it is useful to get a few gigabytes of space from system partition on small hard drives. How to solve such a problem?

How to Delete Windows 7 for Free Disk Space

When upgrading your Windows 7/8.1 to Windows 10, the previous Windows operating system files are stored to a folder which is called Windows.old. The folder can be used to roll back Windows 10 to Windows 7 or Windows 8.1 if there is an error after the upgrade. If it goes well, after installing Windows 10, you also can use this folder to go back to the old system during the first 30 days. If you continue to use the Windows 10, this folder will be removed automatically 30 days later.

If you are satisfied with Windows 10 and want to remove Windows 7 after installing Windows 10, then you can do as the following ways show:

Way 1: In this case, you can choose to delete the Windows.old folder directly to remove Windows 7. Open the system partition in Windows Explorer and find the folder to delete.

Way 2: Use Disk Cleanup to uninstall Windows 7 by deleting previous Windows installation. Do as the following says:

Step 1: Type disk cleanup in the search box of Windows 10 and launch it.

Step 2: When the application is launched, it goes to the drive by default in which your Windows installation is located. Click OK to scan the drive.

Step 3: In the popup window, click Clean up system files to continue.

Step 4: You need to wait for a while during the process of Windows scanning files. Then please scroll down the list and check Previous Windows installation(s) and click OK to delete the files.

When the steps are finished, you can successfully delete Windows 7.

However, if you do not like Windows 10, you can also choose to remove Windows 10 or uninstall Windows 10.

To remove or uninstall Windows 10, the Windows.old folder is necessary, which is used to roll back your computer to Windows 7 within 30 days. If the time is over, the option Go back to Windows 7 will disappear. In this situation, you can choose to reinstall Windows 7 to remove Windows 10 on your computer.

The here we will show you how to remove Windows 10 update.

Step 1: Press Windows key and I key together to open Settings.

Step 2: Choose Update & Security.

Step 3: Then go to the Recovery tab.

Step 4: Select the option Go back to Windows 7 and click Get started.

Step 5: After that, you can follow the on screen to continue. Mercedes e210 key mcu pinouts to carprogauto diagnostic

Eject Windows 10 Cdanimationsupport