Cannot Set Primary Partition to Logical

Hi guys,
Recently I’ve clean-installed vista on one of my hdds. during installation I’ve created two partitions and formatted both of them via vista’s setup screen. Later, I’ve decided to get rid of vista and switch back to xp pro. And so I did. But now my secondary partition on which non-system files (like documents, audio files, etc) dwell which is supposed to be a logical drive is now a primary drive. So my “c” partition is “primary, active” but “d” partition is also “primary” (not active, of course).
Is there any chance I could convert this partition “d” to a logical partition WITHOUT LOSING ANY DATA? Thanks & best regards

If you want to convert a primary partition to logical, the main reason is that you want to create more than four partitions, otherwise you will encounter the “No Free MBR Slot” error. However, in many cases, you cannot set primary partition to logical. Currently, there is only one way to change primary partition to logical without losing data. And it is by using third party partition manager. (As we know Disk Management offers no such option, and diskpart help to make logical partition when create partition…) Thus, the most reliable and easiest way to convert primary partition to logical is using free third party partition manager.
Of course, users should employ a safe enough software to ensure data security, and we have our recommendation. MiniTool Partition Wizard Free Edition is such a nice tool to help change primary partition to logical without any data loss. The reason why I recommend it is that this is not only a freeware, but also works on Windows XP/Vista/7/8/10, all packages.

How to Set Primary Partition to Logical without Data Loss

After a brief introduction to this freeware, let’s see how it works on primary partition and logical partition conversion.
Step 1: Download and install this free partition magic on Windows.
Step 2: Run this freeware to get the main window.
Step 3: Select the target primary partition you would like to convert and choose “Set Partition as Logical” from the left panel (A right click on the target partition is also available to approach this feature). After clicking the button, you can have a preview that the selected primary partition will become logical, and the data on that partition is still there.
Step 4: To make it effective, we need to take the last step. Click “Apply” button on toolbar to execute all changes. Then all work is done.
1. If you select a logical partition, you will see the corresponding feature named “Set Partition as Primary” if you are allowed to make another primary partition on an MBR disk.
2. It is not advised to convert a system partition to logical.


After reading the above content, we can say that MiniTool Partition Wizard is really helpful in setting Primary partition to logical to create more partitions. Besides, you don’t need to worry about the data in that partition. If you are trouble by ” cannot set primary partition to logical”, you can have a try.


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