Resizing Disk Partitions For Windows 10 Anniversary Update

August 8, 2016

In last week’s post; Free Windows 10 Updates Over, Anniversary Edition Coming; I wrote that you needed to have at least 15 GB of free space on your system drive before you should proceed with installing the update. What happens if you don’t have enough free space?

One possibility is that you need to purchase a new drive. That is pretty drastic and would require a lot of work to migrate everything to the new drive. Another solution would be to use the Disk Cleanup tools in Windows 10 to remove enough unnecessary files. Personally I find they still leave a lot behind and I rely on CCleaner to remove even more unnecessary files. For those of you who partition your drives, maybe there is another answer.

I am a huge fan of partitioning drives into three separate drives. Drive C is for Windows and only for Windows. Drive D is the place to install all software and other permanent data like clipart, font and photo collections. Drive E is for your personal data. This makes it easy to backup Drive E (your data) on a regular basis. But when you partition your drive, you have to decide the size of each partition.

We still have one machine in our office that is eight years old and still kicking. Yes, we need to get a new machine to replace it sooner rather than later. But like many users, we are trying to squeeze just a little more life out of it. Unfortunately the C drive (where Windows is located) was so full there was no way to install the Anniversary Update. There was unused space on the D and E drives to spare.

The solution was to turn to MiniTool Partition Wizard as it allowed us to resize the partitions so some of the unused space on D and E could be moved to C. If you only need the basics, there is a free version that can handle the tasks below.


When you run the software, you’re presented with a visual interface (shown below) where you can make partitions larger or smaller along with many other tasks.


Once you’ve made all the changes, you are going to have to reboot the machine. As part of the reboot, the computer will come up in a DOS-like mode where each of the tasks and the progress is listed. This part could take some time as it needs to move everything around. When the tasks are complete, the machine will boot back into Windows and your disks will reflect the new sizes you defined.

This was the perfect solution for us and it did allow us to successfully install the Anniversary Update of Windows 10. We still need a new computer, but this tool allowed us to at least delay the purchase for a few more months.

Note about free Windows 10 upgrade: When Microsoft ended free upgrades on July 29, 2016, it didn’t just get turned off. They may be ways you can still upgrade for free if you missed the deadline. Read Windows 10 free upgrade is still available using Windows 7 and 8 product keys for some details.

Note about my maintenance: Since today’s blog is about maintenance, I wrote a blog about some personal maintenance that some of you may enjoy. Read My Visit to the Dentist in Loreto, Mexico for my story about a procedure that wasn’t painful in at least one important way.

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