I am using Dell Vostro 14 which comes with Ubuntu. In the beginning I used ubuntu for one week but after that I installed Windows 7. Now I am learning RHEL-7 so I want to setup my Lab for study purpose. I am planning to install CentOS7 on my laptop. Shall I make my laptop dual boot with Win7 and CentOS7 or reinstalling only one CentOS will work for me?

(I have already used VMWare but I am not happy with that.)

There were 4 drives in my HDD.
C,D,E and system reserved drive.
I deleted E drive and now trying to install CentOS7 on unlocated space but it is not creating new drive to process further installation.

Hi, sjcreation, and welcome to LQ.

Yes, dual boot should work if you want to use both operating systems.

Can you please paste the output from any partition management program so that we can see how your partitions are currently set up.