I'm trying to create a new partition in Win7 using disk
management utility. Have shrunken existing drive to create unallocated space. Am not
able to create a simple volume with this unallocated space due to the following error
"You cannot create a new volume in this unallocated space because the disk
already contains maximum number of partitions"
How do I fix this issue or bypass it with some other method to create
Reason for Maximum Number of Partitions Error
Have you ever meet maximum number of partitions Windows 7 issue as mentioned above?
Sometimes, you want to create more partitions to store different kinds of files and
to distinguish them easily. Unfortunately, you received this error message. What is
wrong with it?
When installing Windows 7 system, if you don’t manually set up primary partitions and
extended partition, it will create all partitions as primary partition. Often,
the disk format of computer is MBR, MBR disk only supports 4 primary partitions or 3
primary partitions and 1 extended partition at most.
Errors on creating partition with Disk Management
If you have 4 primary partitions, and you want to create a new partition, you will
get the warning: The operation you selected will convert the selected basic disk(s)
to dynamic disk(s). If you convert the disk(s) to dynamic, you will not be able to
start installed operating systems from any volume on the disk(s) (except the current
boot volume). Are you sure you want to continue?
Once 3 primary partitions and 1 extended partition are created, if you want to create
a new volume, you will receive this error message: You cannot create a new volume in
this unallocated space because the disk already contains the maximum number of
How many partitions can I create in Windows 7?
Generally speaking , if your disk is MBR, you can create 4 primary partitions or 3
primary partitions and 1 extended partition to hold logical drives at most. If you
disk is GPT, you can have up to 128 partitions and do not need to distinguish
between "primary" and "logical" partitions. All partitions on
GPT disk are primary partitions by default. So, maximum number of partitions windows
7 problem often happens to MBR disk.
How to Fix Disk Contains Maximum Number of Partitions Issue
If you meet this problem, how to solve maximum number of partitions in Windows 7?
Basically, there are two ways to fix this issue.
Method 1: Convert MBR Disk to GPT Disk with AOMEI Partition Assistant
In Windows, the number of partitions on GPT disk can reach up to 128. If you use GPT
disk, you do not have to worry "cannot create a new simple in this unallocated
space" error warning anymore. Also, all partitions on GPT disk are primary
partitions by default. So if you want to create more than four primary partitions,
GPT type is suggested. Let’s see how to convert MBR to GPT.
When it comes to conversion MBR to GPT, the first tool comes to your mind may be Disk
Management. However, you must be sure to delete all volumes and then convert to GPT
from MBR. Otherwise, you will not succeed converting MBR to GPT. If you delete all
volumes, you will suffer a great data loss. it is not recommended to use Disk
Management. You can turn to a third party software: AOMEI Partition Assistant.
AOMEI Partition Assistant is a professional disk partition management which aims to
make your PC disk partition management much easier and safer than ever. With its
help, you do not have to worry about data loss.
Step 1: Download AOMEI Partition
Assistant Pro, and launch the software.
Step 2: Right click the disk you want to convert and choose Convert to GPT Disk. Then
click OK. At last, click Apply to save the operation.
Before converting MBR to GPT, you must make sure if your motherboard supports
EFI/UEFI boot. If not, please don’t convert it to GPT disk, otherwise, your system
will be unable to boot next time.
In Windows XP 32-bit, data disk doesn’t support GPT type. Moreover, in Windows XP
including 32 bit and 64 bit, Windows Vista 32-bit and Windows 7 32-bit, the disk
with operating system can’t be GPT type.
Method 2: Convert primary to logical with AOMEI Partition Assistant
If your motherboard does not support EFI/UEFI boot, you can try another easy way to
solve maximum number of partitions allowed in windows 7 issue. That is converting
primary to logical.
step1. Right-click the primary partition which you want to convert and then
choose “Advanced” and “Convert to Logical. Click “OK” to confirm the operation in
the following pop-up window. Commit the operation by clicking “Apply” on the tool
The two method mentioned above can fix maximum number of partitions Windows 7 and
allow you to create partition with Disk Management. However, It is kind of
Why not create partition with AOMEI
Partition Assistant? Actually, the error message mentioned above can not be
found in AOMEI Partition Assistant. You can directly create new partitions with a
few clicks without considering it is MBR or GPT. If it is MBR with four primary
partitions, when you create new partitions, this software will automatically convert
new partitions to logical partitions.
With the help of AOMEI Partition Assistant, just a few clicks, you can solve reached
maximum number of partitions in windows 7 problem. In addition, you can resize partition or extend partition. Besides Windows
7, AOMEI Partition Assistant also supports all editions of Windows 8/8.1/10, Windows
Vista and Windows XP.