How to join two primary partitions windows 10

Question

I have a C drive and E drive. Both of them are primary. I have very less space left in my C Drive. How would I join these two partitions. So, that I can extend C Drive with E drive to make them one.

Answer 1

The only way to do this, is by deleting the E drive partition, then alter the size (expand) the C drive.

This means, that you'll first have to backup all the data on the E drive to a safe location, for example an external harddrive, or another pc in your network if available.

Do note, the E partition is bitlocked, so you are likely going to need to unlock it first.

Once the partition is empty, right-click it and choose delete partition. Then right click on the C partition and choose expand.

Please note, by removing the partition, all data will be removed. If any backup failed, you will not be able to retrieve that data. If you can't risk losing your data and you don't feel confident about proceeding, ask someone to do it for you or live with the small size.