Updated August 27, 2024
Are you running out of free space on your computer's drive? You've uninstalled unused programs and cleaned it up, but still cannot free up any more room? Doing computer repair, I've seen this often and have personally run out of space more times than I care to remember. Here's how to upgrade the drive in your computer.
Changing out a drive may sound scary, but it's not. If your existing drive is healthy and you have a good backup of the data on it, you should be good to go. The procedure is the same for desktop computers and laptops, with slight differences due to the form factor (physical size).
Before proceeding to clone your existing drive, it is highly recommended that you turn off any drive encryption, such as BitLocker. Once you have successfully cloned your drive, you can turn back on the drive encryption.
How to turn off BitLocker drive encryption
Three different drives side-by-side
There are two (2) types of drives, SSD (Solid State Drive) and HDD (Hard Disk Drive), two (2) different types of drive interfaces, SATA (7 pin connection cable) and PCI-Express (59-66 notched pins), and three (3) different form factors (physical size) of drives; 3.5" and 2.5" (the dimension relates to the width of the drive) and M.2 (width 22 MM / length varies between 16 - 110 MM). SSDs and HDDs come in 3.5" and 2.5" sizes; SSDs come in the 2.5" and M.2 form factor. Laptops use the 2.5" / M.2 form factor, and desktop computers can use either size.
If you plan on using a 2.5" drive in a desktop computer, you may have to use 2.5" to 3.5" adapter brackets. Also, if you are installing a 2.5" SSD into a laptop, check the physical dimensions first. Some SSDs are taller (thicker) than standard 2.5" HDDs and may not fit into a laptop. And if you are planning on using an M.2 drive that has a heatsink in a laptop, check to make sure that you have enough space (height), as most laptops do not have room for the additional height (thickness) to accommodate an M.2 drive with a heatsink attached.
View of drive properties inside of Disk Management
The next thing to do is find out what you have for an existing drive using Disk Management. Right-click on the Start 
button to bring up the Power User menu, then left-click on Disk Management. Find the disk you want to upgrade, right-click on the disk name (Disk 0, Disk 1, etc.), and select Properties. On the General tab, you will find the model number of that drive. Do a Google search for it and find the specifications (form factor, data capacity, and interface). Now, it's just a matter of getting a new drive that matches the form factor and interface you want to use. Remember that your new drive's data capacity has to be equal to or larger than your existing drive.
If your existing drive is an HDD, the first thing to do is to check the current drive for errors. Running a Checkdisk will find any errors that might prevent the successful cloning of the drive.
Running Checkdisk in Windows 11
Running Checkdisk in Windows 10
If errors are found on the existing drive, you may be unable to use the new drive's manufacturer's software. In this case, you will have to use third-party software like R-Drive that can ignore read errors.
Two ways to clone a hard drive
Drive-to-drive cloning
Drive-to-drive is the easiest to do, and a few drive manufacturers (Western Digital, Seagate, etc.) have free utilities to do this. There are also a few free disk cloning utilities out there. Check out the UBCD; it has a few. All you have to do is turn off your computer and attach the new drive internally using a SATA or PCI-e port or externally using a docking station or external USB enclosure. If your system is a desktop computer, consult the manufacturer's documentation on how to do this. If it's a laptop, you will have to attach it using either a USB adapter or inside of an external case.
A laptop drive connected to a USB adapter
If you plan on reusing your existing laptop drive, an external case might be the way to go. That way, when you're done, you can put your current drive into it, reformat it, and use it as an external drive for storage.
Once the new drive is ready, start your computer, install the manufacturer's software, and start the disk clone. If you're installing a larger drive, always remember to check and make sure that the new free space is going to partition you want to expand. Once done, just power off the computer and change the drives out. If your system is a laptop, consult the manufacturer's documentation on how to change out the drive. When you clone a drive, you copy everything, including the MFT (Master File Table). Run a Checkdisk to make sure everything copied over correctly.
Drive-to-image / image-to-drive cloning
Drive-to-image / image-to-drive is a bit harder, but it has an advantage: a full disk backup. There are a few third-party software programs that can expand your current drive partitions to fit a larger capacity drive. If the drive you want to clone has the same capacity but is just a different type, then you can always use Windows Backup.
Windows 11 Backup
Windows 10 Backup
How to create a Windows Recovery Drive (used for restoring Windows Backup images)
This two-step process requires a USB flash drive (16GB or larger) and a USB storage drive (the same capacity as your existing drive). The process is the same as drive-to-drive, but instead of cloning to the new drive, you create a file containing an image of the existing hard drive on a USB storage drive. I prefer using a portable (2.5") external drive, as they don't require any additional source of power (AC adapter).
The first step is to install the cloning software on your existing drive and use it to create an image of your existing drive to the USB storage drive. Once you have created an image of your drive to a USB storage drive, you must make the bootable USB flash drive using the cloning software. After you create the bootable USB flash drive, it's time to start cloning the drive.
Once you have created the drive image and bootable USB drive, you can shut down your computer and change out the drives. Consult the manufacturer's documentation on how to change out the drive. Then you boot your computer back up on the bootable USB drive you created, reconnect your external drive, and restore the drive from the image file.
If you're installing a larger drive, always remember to check and make sure that the new free space is going to partition you want to expand. Once done, just shut the system down, remove the boot disk, and start it back up. When you clone a drive, you copy everything, including the Master File Table, so run a Checkdisk to verify that all of the data is in good working condition.
For more information on upgrading computer drives, click on the following links.
How to clone the drive in your Windows computer
How to upgrade your computers hard disk drive to a solid state drive