Cannot Create Partition There Are No Free Mbr Slots

3 min readNov 4, 2021

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Cannot create new partition ‎ 02:05 PM. But, as Huffer has pointed out, it makes a lot of difference whether your drive is formatted MBR or GPT when wanting to create more partitions. But there is no way to create any more partitions, and if you Force that, you will end up converting all your existing partitions to.

How-To Geek Forums / Windows 7

(Solved) — How to resize my Hard disk without convert it to Dynamic

(8 posts)

My NB comes with 500 GB HDD, with preinstalled Windows 7 pro 64bit. The all dirve conssiest of one partition, I would like to shrink my HDD and split it into 4 partition for multible booting (win 7 pro, Redhat, win xp, Data), when i using disk manager to shrink my C: it convert the partition type from Basic to dynamic, and that last prevent me from doul booting.

How can i resize, split my HDD without lossing my win 7 pro as primary O.S. without convert the C: drive into dynamic? does Diskpart command do that?

regards

OSSos

this may help http://www.partitionwizard.com/help/copy-disk.html also this http://www.partitionwizard.com/help/resize-partition.html

mark.

Please image your drive first with this before you attempt the above. http://www.macrium.com/reflectfree.asp
Backup/copy EVERYTHING you have (docs, pics etc)
This is not as easy as you think.

Mike

I start using MiniTool Partition Wizard Home Edition to resize and creat the rest of partitions

but every time I would like to create a new partition i got this ‘There are no free MBR slots on the disk’

I need to create 3 patitions more.

regards

None of the above will help if you already have 4 primary partitions. And that you can only see in Disk Management because some of the partitions may be hidden.

I suggest you post a good picture of your Disk Management, and then we go from there. You probably have to convert one of the primaries to logical before proceeding. But without a look at Disk Management, we are flying blind.

Here is my Disk manager snap shot

Thank you for help, i need to create more than 4 partitions, and allow my NB to have doul booting.

regards

Well, that is not exactly a snip of Disk Management, but this PW snip will do. It shows that you have only 3 primary partitions which is good. Thus you can make more simple extended/logical partitions in the 400GBs unallocated space.

Just make sure you do not create any additional primary partitions. You can even make the C: partition logical. But that operation will only work with the bootable CD of PW because C: must be inactive during the ‘operation’. XP you can also install in a logical partition because the bootmgr is in the small system reserved active partition.

Btw: If you right click on the small boot partition in PW and go to ‘Explore’, you can see what’s in it. You can open the 3 folders by clicking on the little + boxes in front.

This tutorial may help you to install XP properly: http://www.sevenforums.com/tutorials/8057-dual-boot-installation-windows-7-xp.html