Here is the solution to “There are no free MBR slots on the disk” error while creating new partition on Windows 7.
Scenario:
I am using Windows 7 OS in my HP Pavilion Laptop. I have 3 drives (C, D, and E). When I see through Control Panel -> Administrative Tools -> Computer Management -> Disk Management, I could see another drive called ‘System’. So, altogether there are 4 drives of my hard disk.
Problem:
I want one another drive/partition. I installed a Partition software and tried to create a new partition. But I am unable to create new partition. I get the following error message:-
There are no free MBR slots on the disk
Cause:
There is some limitation on disk type in Windows. You can only create 4 primary partitions at most. And, all my 4 partitions were of type ‘Primary’. Therefore, I was not able to create new partition any more.
Solution:
Changing any one partition’s type to Logical from Primary will solve the problem. With partition editor software, you can change partition type between Logical and Primay without losing data.
I have used this FREE partition software: Download Partition Wizard
Here is the video about converting Primary partition to Logical partition:
How to convert Primary partition to Logical partition without losing data?
Thanks.