Unable to install Windows 10, can't choose a disk partition

Are you struggling with Windows 10 installation and having difficulties in selecting a partition to install Windows 10? Learn how to solve the problems with disk partitions while installing Windows 10.

I have been struggling to install Windows 10 for a while. I've one disk and 2 partitions, in addition to the 100Mb system partition. I had the 64-bit Windows 7 installed on the computer and wanted to upgrade to 32-bit Windows 10. When I run the Windows 10 setup over the Windows 7, it wouldn't let me proceed asking me to use a 64-bit version.

My next option was to boot from Windows 10 bootable DVD and try to delete the partitions or choose an existing partition to install the Windows 10. However, for some reason, system wouldn't allow me to select an unused partition. It wouldn't even allow me to create a new partition and use from the unallocated disk. I tried various tools like Partition Manager and it wouldn't allow me to delete the partitions or choose it for Windows 10 installation.

After a lot of trial and error, I figured out a way to get out of this and install Windows 10 successfully. Here is what I did:

1. Boot the computer from the Windows 10 DVD

2. In the welcome screen, press Ctrl + F10 to open the command prompt

3. Runt the "Diskpart.exe" by typing "diskpart" in the command prompt.

4. Type "list" command to see the list of disks. For me, I had only one disk and it showed "Disk 0"

5. Type the commend "select disk 0"

6. Run the command "list partition". It will display all partitions.

7. Delete all data and partitions, type the command "clean". Remember that all data will be erased and all partitions will be deleted and become unallocated space, which you can use while installing Windows 10.

8. Type "exit" to get out of diskpart. Close command prompt to resume Windows 10 installation.

At this point, I tried to proceed with the Windows 10 installation but it didn't work since the disk was in a locked state, even though it didn't give a proper error message except some raw error code. I was panic a bit but I restarted the computer and the installation continued without any problems. I was able to choose the unallocated space from the disk and install Windows 10 on it.

Read Step by step instructions to install Windows 10

Article by Tony John
Tony John is a professional blogger from India, who started his first Weblog in 1998 at Tripod.com. Tony switched to blogging as a passion blended business in the year 2000 and currently operates several popular web properties including IndiaStudyChannel.com, Techulator.com, dotnetspider.com and many more.

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