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How Do I Partition SSD on Windows 11? 5 Things You Need to Know

Updated by Roxanne on Sep 22, 2022
Written by Tracy King

Do you know how to partition an SSD drive on your new Windows 11 computer? What if the SSD was shipped with Windows 11, and it currently has only one drive - the OS drive, and how to separate the OS with your documents and personal files? And if you added a new SSD to Windows 11, how will you partition it? 

5 Things You Should Know About Partition SSD

When you buy a new Windows 11 computer, it's mostly shipped with SSD, and the manufacturer will leave only one drive on the disk. And many people replied that they messed up with the OS file and their documents. 

So, to partition SSD, creating new partitions for saving OS and personal data separately is a growing need. So how much do you know about SSD? Here we list the 5 critical things about partitioning SSD in Windows 11. Follow to learn the details below:

#1. Can SSD Drives Be Partitioned
#2. Does Partition Slowed Down SSD
#3. Is Partitioning SSD Bad
#4. Should I Partition My SSD for Windows 11
#5. How Do I Partition My SSD in Windows 11

Note: If you added a second SSD on Windows 11, and want to transfer OS to it, refer to How to Install Windows 11 on SSD for help. 

#1. Can SSD Drives Be Partitioned

Yes. SSD, also known as Solid State Disk, is a physical disk, similar to a hard disk drive, that provides storage space for users to install the operating system, applications, software, and save personal files, documents, etc. 

Image of ssd

And you can partition and re-allocate the SSD if you need to create two or more partitions on the drive. 

Note that the partition numbers of different types of disks are different:

  • MBR - 3 primary partitions + 1 logical partition.
  • GPT- 128 partitions.

Difference between MBR and GPTdisk

#2. Does Partition Slowed Down SSD

No. Partitioning SSD won't slow down the SSD disk. No matter how many partitions that you created on the SSD, or whether you've repeatedly erased or delete partitions on it, it won't influence the reading and writing speed on your SSD disk.

Here are two factors that will affect the disk speed:

  • Bad sectors
  • 4K alignment

So how to test if your SSD disk contains bad sectors or check if your SSD is 4K alignment? Here we would like to recommend you try EaseUS Partition Master. Its surface test and 4K alignment features can detect the SSD speed. And when the speed of SSD is influenced by the two factors, you can optimize its performance with this tool. 

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#3. Is Partitioning SSD Bad?

No. As SSD has the same feature as HDD, it allows you to create partitions and repartition them on a computer. As a result, it won't do any bad to the SSD disk itself.

Instead, partitioning SSD will help you make full use of the disk space, also, managing your OS, installed programs, and personal data in a reasonable sequence.

Partition SSD logo

However, be careful while you are ready to deleting or formatting volumes on an SSD or HDD as this will cause data loss. 

Note: Ensure that you've backed up all essential files before taking steps to delete, format, or erase an existing partition on your SSD disk.

#4. Should I Partition My SSD for Windows 11

It depends. 

  • If your SSD is small, with a 120GB or smaller capacity, and you have a second bigger hard drive on the computer, use the 120GB SSD as OS disk and store files to the second HDD. 
  • If your SSD is 250GB or even bigger, or you only have one disk on the Windows 11 computer, it's suggested that you separate the OS drive from the data drive. Normally, we suggest that you leave 100GB or 120GB space for the OS drive.

Also, when your OS drive or data drive doesn't have enough space, Windows 11 will pop up low disk space error. In this case, you'll need to repartition SSD, adding more unallocated free space to the target volume. 

In a word, partitioning SSD to leave enough space for the OS drive is vital to keep your computer at its peak performance. 

#5. How Do I Partition My SSD in Windows 11

Note that when it comes to partitioning SSD in Windows 11, you have three tools for trying: 1. Disk Management; 2. Using CMD Command; 3. Third-Party Partition Manager Software - EaseUS Partition Master.

Here we'll guide you to use these tools to partition SSD disk in Windows 11 from the following two angels:

  1. 1. Partition an Existing SSD Disk
  2. 2. Partition a Second & New SSD

How to Partition Existing/Used SSD in Windows 11

Use Disk Management:

Step 1. Press Windows + S, type partition, and select Create and format a hard disk partition.

Open disk management

Step 2. When Disk Management opens up, check the state of your SSD disk and follow the next guides to partition it.

Step 3. Create new partitions on SSD

With unallocated space on SSD: 

  • Right-click the unallocated space.
  • Select New simple volume.
  • Enter name, size, and file system for the new volume. 
  • Click Next and Finish.

Partition SSD with unallocated space

With no unallocated space: 

  • Right-click on a partition with enough free space.
  • Select Shrink volume.
  • Enter space size to shrink and click Shrink.

Shrink ssd to partition it

  • Right-click on unallocated space, select New Simple Volume.
  • Set name, size, file system for a new drive, click Next and Finish.  

Use Partition Manager Software - EaseUS Partition Master:

EaseUS Partition Master with its advanced partition hard drive feature enables all levels of Windows users to partition the SSD disk in Windows 11:

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Step 1. Launch EaseUS Partition Master. On the main window, right-click on the unallocated space on your hard drive or external storage device and select "Create".

Step 2. Adjust the partition size, file system (Choose the file system based on your need), label, etc. for the new partition and click "OK" to continue.

Step 3. Click on the "Execute 1 Task(s)" button and create a new partition by clicking "Apply".

Watch the following video tutorial and learn how to create a partition in NTFS, FAT, or EXT file system.

Use DiskPart Command:

Step 1. Press Windows + S, type diskpart, click the result to open it.

Open diskpart

Step 2. To Create New simple volume on SSD:

With unallocated space:

  • list disk
  • select disk 1
  • create partition primary size=####
  • assign letter=*
  • format fs=ntfs quick

partition ssd with unallocted space via diskpart

Without unallocated space:

  • list disk
  • select disk *
  • list volume
  • select volume * (next to target volume)
  • shrink=###
  • create partition primary size=###
  • assign letter=*
  • format fs=ntfs quick

partition ssd without unallocated space in diskpart

Step 4. Type exit to close the command prompt windows when the operation completes.

How to Partition a New/Second SSD in Windows 11

Method 1. Use Disk Management

Step 1. Press Windows + S keys, type partition, and select Create and format hard drive partition from the result.

Step 2. Once Disk Management opens up, locate and right-click on the new SSD, select Initialize Disk.

Step 3. Select disk type for it, here we suggest you pick GPT if you tend to use the SSD as an OS disk.

Initialize ssd to gpt

Step 4. Right-click on unallocated space, select New Simple Volume, set name, file system, and size to the new volume.

Create new simple volume on new ssd

Step 5. Click Next and Finish.

partition ssd

Repeat the process of creating new simple volumes to create more partitions based on your needs.

Method 2. Use EaseUS Partition Master

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First, initialize SSD

Step 1. Open EaseUS Partition Master and got to Partition Manager.

Step 2. Right-click the target disk - HDD or SSD and select "Initialize to MBR" or "Initialize to GPT". Click "Execute Task" and "Apply" to save the changes.

0:00-0:18 Initialize to MBR; 0:19-0:44 Initialize to GPT;

Next, one-click to adjust disk layout on SSD

Step 1. Open EaseUS Partition Master, go to Partition Manager and click "Partition this disk" on the popped-up New Disk Guide window.

new disk guide partition external hard drive step 1

Step 2. Set the number of partitions you need to create, and set the partition style to your disk - MBR or GPT.

Or, you can accept the default setting offered by EaseUS Partiton Maste. Once done, click "Proceed".

new disk guide partition external hard drive step 2

Step 3. Click "Execute 1 Task" and "Apply" to finalize partitioning the new HDD/SSD or external disk.

new disk guide partition external hard drive step 4

Method 3. Use DiskPart Command

Step 1. Press Windows+S keys, and type cmd, right-click  Command Prompt, select Run as Administrator.

Step 2. Type diskpart and hit Enter.

Step 3. Type the following command one by one and hit Enter each time:

  • list disk
  • select disk #
  • convert gpt

convert ssd

Step 4. Type the next commands one by one and hit Enter each time:

  • list disk
  • select disk
  • create partition primary size=###
  • assign letter=*
  • format fs=ntfs quick

Repeat the process to create more volumes on the new SSD.

Step 5. Type exit to close the command prompt windows.

SSD Is Suitable for Running Windows 11, Go and Partition It For Your New OS Now

On this page, we included 5 things that you should know about partitioning SSD in Windows 11. Note that SSD is suitable for run Windows 11 and it surely will be a trend for manufactures to ship with their computers.

So if you have one, go and partition it for your new operating system now. As for the three SSD partitioning tools, we suggest you take EaseUS Partition Master for help as it's the easiest tool for managing and partitioning SSD.

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About the Author

Updated by Roxanne

Roxanne is one of the main contributors to EaseUS and has created multiple posts on digital devices like PCs, Mobile phones, tablets, Mac, etc. She loves to share ideas with people of the same interest.

Read full bio

Written by Tracy King

Tracy joined in EaseUS in 2013 and has been working with EaseUS content team for over 7 years. Being enthusiastic in computing and technology, she writes tech how-to articles and share technical solutions about Windows & Mac data recovery, file/system backup and recovery, partition management and iOS/Android data recovery.

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  • Partition Master Free can Resize, Move, Merge, Migrate, and Copy disks or partitions; convert to local, change label, defragment, check and explore partition; and much more. A premium upgrade adds free tech support and the ability to resize dynamic volumes.

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  • It won't hot image your drives or align them, but since it's coupled with a partition manager, it allows you do perform many tasks at once, instead of just cloning drives. You can move partitions around, resize them, defragment, and more, along with the other tools you'd expect from a cloning tool.

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