Resize Virtual Box VM Disk Drive




occasionally I’ll create a new VM using the default hard Disk size of 32GB and then may need to resize it later. This does happen fairly infrequently and every time it does I struggle to remember the exact command and usually spending time googling for – How do I increase the hard disk size of the virtual machine?

I wanted to make this easier for myself next time and document the process for myself and hopefully help others too!

How to resize your Virtual Box VM Disk size

Back up your machine
always do this as a precautionary measure.

I have carried out this process a number of times and as of yet, it never failed, but you never know, technology being what it is, that one occasion you don’t want it to fail it will!

Open the Terminal ( Ctrl + Alt + t )

Navigate to your folder where your VM’s are stored. I usually use the default location

Change into the sub directory of the machine

and example to resize the disk to 100GB

Start your VM and then navigate to the Disk Management console.

Right click on the partition you want to resize and click Extend Volume… on follow the wizard

Your machine is now resized and you can continue.




Gary Woodfine

Freelance Full Stack Developer at threenine.co.uk
Helps businesses by improving their technical proficiencies and eliminating waste from the software development pipelines.

A unique background as business owner, marketing, software development and business development ensures that he can offer the optimum business consultancy services across a wide spectrum of business challenges.

Affiliate Disclaimer

Disclosure: Please note that some of the links included in the blog posts are affiliate links, which means I will earn a commission if you decide to make a purchase.

I only include affiliate links to products, services and companies that I have personal experience and have actually used. I only recommend them because they are helpful and useful, not because of the small commissions I make if you decide to buy something.

Please do not spend any money on these products unless you feel they are relevant, suitable and will help you achieve your goals.

Buying anyone of these products and the commisions earned will not make me an overnite multi millionaire, but they will help to cover the hosting costs and compensate for the countless hours and effort I put in to create meaningful and valuable free content I provide to help others succeed.

You've also undoubtedly noticed that I also use various advertising networks - unless of of course you're using an Ad blocker, this is also an attempt to reduce my monthly deficit I experience in providing free relevant, valuable and on occassion insightful content for the benefit of others.

I only really make some money if people click on the ads, unless of course you consider 1c per 1000 impressions real money!

Bear in mind just how many impressions I need to make before I can cover my £20 hosting costs a month!

If you are using an adblocker and guilt stricken you can of course donate using any of the buttons below, but I won't be holding my breath.


Buy me a coffeeBuy me a coffee
π