Windows 10 How to uninstall preview?

[qavorq]

For some time now run a dual boot pc for some time now with Win 7 and Win 10 tech preview. I have upgraded to Win 10. So now what I want to do is uninstall the tech preview and the boot menu. I could just format the tech preview drive but would that leave my boot up clean with just the Win 10 booting straight up?

 

[Neemobeer]

You will want to delete the boot entry out of the BCD store in addition to deleting the partition. Becareful not to delete the main boot entry. I would delete the entry before formatting the partition as in the boot entry should point to the bootloader by partition name Example
device partition=C:
path \Windows\system32\winload.efi

If your preview is on partition D then delete the BOOT LOADER entry and not the boot manager entry.

To delete

• Open an elevated command prompt (Win Key type cmd, right click the cmd icon Run As Administrator
• Next you will want to list your boot entries, type bcdedit /v
• Locate the identifer GUID that is for your preview install
• Type bcded /delete {big-long-guid-number-plus-curly-brackets} /f
• Now you either reboot and test that it boots straight into your upgraded Windows 10
• Format preview partition
• Expand your Upgraded partition

 

[Saltgrass]

Are you leaving the Preview program.. If so, you may want to stop the preview builds so the machine can reboot and change that configuration.