How to Combine Two SSD Drives [Complete Guide in 2025]

Updated by

Roxanne 

Written by

Brithny 

Updated on Jan 10, 2025

SSD drives are rapidly replacing HDD drives as they are far more superior. They greatly increase your PC's efficiency by increasing boot time, file opening speed, and program running speed. They also utilize less power and are more durable. The only disadvantage is their high cost. Generally, getting an SSD drive with a large storage capacity is very expensive. Fortunately, you can overcome this issue by simply purchasing two cheaper SSD drives and combining them into one! This will save some of your hard-earned dollars while also getting the job done. You must obviously be wondering about how to combine two SSD drives into one now. Simply read our guide which includes detailed explanations on how to combine two SSDs and some important tips and tricks to do this.

Requirements to SSDs Combination

There are some important prerequisites that you must know before combing your SSDs regardless of which method you use to combine the drives. We have mentioned all of them down below.

• Combining external disks and devices is undoable. 
• You can only merge your internal drives and disks.
• In order to merge disks, there should be some unallocated space available.
• If you are looking to increase the C drive space across your drives by combining them, this is not possible.
• Both SSD drives should be converted from basic to dynamic before you begin merging them. 

How to Combine Two SSD Drives with EaseUS Partition Master

EaseUS Partition Master allows users to resize, clone, create, merge and format partitions and drives. The main advantage of using this software is that you won't have to delete your data to combine your disks or make any changes to them. 

The software can perform a number of tasks like resizing, merging and moving partitions. If you want to combine two disks using the software, you need to purchase the premium version which is also not very expensive. EaseUS Partition Master will help you in transferring free space from one drive to another, checking system errors, cloning partitions, converting basic disks to dynamic ones and much more.

Follow the steps to combine two disks with EaseUS Partition Master.

Step 1. Convert Basic into Dynamic

• Click "Disk Converter" and select "Basic => Dynamic". Click "Next" to continue.

• Select the disk that you want to convert to Dynamic and click "Convert" to start the disk conversion from the Basic to Dynamic.

• Go to "Disk Converter" and choose "Basic => Dynamic" again. Select the other disk (with at least 1M free space at the end of the disk) and convert it to a dynamic disk in the same way.

• When both disks have been converted into dynamic disks, as shown below, you can follow Step 2 to merge free space from one disk to another now.

Step 2. Merge Two Disks into One Disk

Note: The other dynamic must be unallocated space. If it's not, use EaseUS Partition Master to delete all the partitions on it. What's more, you cannot merge a system partition even if you have converted it to dynamic.

• Select the full disk, right-click on it and choose "Resize/Move".

• Use your mouse to drag the partition panel rightward or leftward to extend partition size. The "Fill in all unallocated" button can help you quickly utilize all unallocated space.

Sometimes, the unallocated space is on the left of the partition you want to extend. If you want to move unallocated space, just drag the left partition handle leftwards to the size you want.

• Click "OK" and "Execute 1 Task(s)".

Else Features You May Also Like in EaseUS Partition Master

Alongside combining two SSds as one, you can also apply EaseUS Partition Master to fully manage and optimize your SSD disk performance with the following listed features:

• 4K align SSD
• Migrate OS to SSD
• Clone SSD disk or partition
• Convert SSD to MBR or GPT
• Check file system on SSD
• Test SSD speed, S.M.A.R.T status, etc.

How to Combine Two SSDs with Disk Management

Windows built-in tool, Disk Management, can create partitions and delete or merge them. It can also combine two SSD drives into a single volume. This volume can be of two types; Spanned and Stripped. The former is used to combine files that are of different sizes, and it uses the drives sequentially by filling up the first SSD before utilizing the second one. The latter, Stripped Volume, is used when your SSD drives have the same size, and it uses both of them simultaneously to increase read and write performances. You can choose between either of them based on which ones meet your requirements; opt for a new spanned volume if you want to combine two drives that have different volumes but use a new striped volume if you want faster performance.
 
Follow the steps given below to combine your SSD drives into one using Disk Management.

Step 1. Press Win+R on your keyboard. Type diskmgmt.msc to open Disk Management.

Step 2. Right-click the disk and select "Convert to Dynamic Disk".

Step 3. You can convert multiple disks to dynamic disks at the same time.

Step 4. A warning box could pop up telling you that you are going to convert the basic disks to dynamic disks. Click "Yes".

Step 5. Select one of the disk, for example, Disk 2. Right-click the disk and select "Delete Volume" to create unallocated space.

Step 6. When you delete all the partitions on Disk 2, right-click Disk 1 and select "Extend Volume".

Step 7. In the next window, choose the available space and click "Add".

Step 8. Then, click "Finish" to make sure that you want to combine two disks.

Step 9. Finally, your two disks are merged as one disk with Disk Management.

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Conclusion

By combining two SSD drives, you will be able to overcome the major issue associated with SSDs i.e. the high costs of large storage capacity SSD's. You can either use the premium version of EaseUS partition master to do this which will make the task a lot easier or opt for the free Disk Management method. Both the methods will help you get your job done quickly!

FAQs About Combining or Merging Two SSDs into One

If you have further more questions about merging two SSDs into one, follow the questions and you may find desired answers here in this part.

1. How to use two SSDs at the same time?

• First, make sure you connected and installed two SSDs in your PC correctly.
• Second, initialize two disks to the same disk partition style - MBR or GPT.
• Third, apply third-party disk converter software - EaseUS Partition Maser to convert two disks to dynamic.
• Forth, create partitions with unallocated space that are merged as one in two SSDs.

Once done, you can then use two SSDs at the same time.

2. How to merge disk 0 and disk 1?

• Launch EaseUS Partition Master, go to the Disk Converter section.
• Select 'Convert Basic to Dynamic', select disk 0 and click 'Convert'.
• Repeat the process to convert disk 1 to dynamic.
• Create partitions with unallocated space on two disks.
• Then, you've successfully merge disk 0 and disk 1.

3. Can you make two hard drives work as one?

Yes, sure. You can combine two hard drives work as one with the following methods:

• Create storage space with two drives.
• Convert two hard drives into dynamic drives and combine them as one.