Symptoms
I am running out of free space on my virtual machine, and I want to increase the size of the virtual hard disk.
It specifies a size of 100GB for the first partition. Then it creates a new, second partition, named Part2, using the journaled HFS+ format, with a minimum size of 100GB.
Cause
Even if you have an expanding virtual hard disk, it won’t expand above the limit set in virtual hard disk configuration. To allow further expansion, you must increase the size manually.
Resolution
Warning! We strongly recommend that you check your virtual machine's hard disk for errors and back up your virtual machine before following the steps below.
Note: This article does not apply to Boot Camp virtual machines, where the primary partition size cannot be increased.
Starting from version 14, Parallels Desktop will periodically check free disk space left in the virtual hard disk and offer to increase (resize) hard disk via macOS notifications.
To increase virtual hard disk size, do the following:
Start Parallels Desktop and do not start your virtual machine. Shut it down if it is either suspended or running.
Click on the Parallels icon on Mac menu bar and select Control Center:
Right-click on your virtual machine and choose Configure to open its configuration.
For Parallels Desktop 14:
Go to the Hardware tab, select Hard Disk which requires increasing the size then expand Advanced Settings drop-down menu, then click Properties.
For earlier Parallels Desktop versions:
Go to the Hardware tab, select Hard Disk which requires increasing the size then click Properties.If the virtual machine has Snapshots the following notification window will appear. Press Manage Snapshots... to open the corresponding dialogue window then remove Snapshots to start editing the disk size.
Choose the size you want for the virtual hard disk and click Apply.
After that Parallels Desktop will suggest creating a backup of the virtual machine.
NOTE: As mentioned above, we strongly recommend to create a backup of the virtual machine. In case of power surges/failures with the Mac, Mac's unpredictable restarts or third-party applications interventions, during the operations with the virtual hard drive may result in its corruption result in in the inability to use the virtual machine.
To proceed further click Continue.
To make sure the changes were applied successfully, confirm that the size of the virtual hard disk has changed:
- Start the virtual machine.
- Right-click on the Start menu > Disk Management.
The size of the main partition (the partition where the Windows installation is located—it is local disk (C:) by default) should equal the size of the virtual hard disk (Hard Disk 1).
If the size of Hard Disk in the virtual machine’s configuration has changed and at the same time the size of the local disk (C:) in Windows has not, do the following:
- Repeat steps mentioned above to open Disk Management.
Disk Management reports that you now have an extra partition on the hard drive that’s marked as Unallocated. You can add this Unallocated partition manually to your main disk (C:) partition:
Right-click on the main (C:) partition and select Extend Volume.
Extend Volume Wizard will open. Click Next.
On the Select Disk page, you may choose how much extra space should be added to the main (C:) partition. By default, the whole Unallocated partition will be added. Click Next.
Click Finish on the next page, and the Unallocated partition will be added to the (C:) partition.
Click Start and type This/this and click on the suggested This PC Desktop app.
Right-click on the C: drive and select Properties.
As Mac users, it’s easy to turn our noses up at running Windows, but the truth is that it sometimes can’t be avoided. Be it for work or for playing video games, running Microsoft’s operating system on Apple hardware isn’t nearly as hard as it seems like it would be.
There are two main ways to go about this: virtualization and Boot Camp. The former involves running a macOS application that allows you to run Windows within, while the latter equips you to reboot your Mac fully into Windows.
There are several factors involved in picking the correct path, including price, ease of use, and flexibility. It’s also important to consider what sorts of tasks you need to achieve with your Windows installation, as that may make the right decision more clear.
Parallels For Mac Change Partition Size Sd
If you need access to a couple of Windows apps while you’re running macOS, it’s best to virtualize. Running Windows in a virtual machine (dubbed a “VM”) also allows you to store it all on something like an external SSD, as Boot Camp requires a chunk of your boot drive.
For that trade, Boot Camp offers direct, native access to your Mac’s hardware. If you want to game in Windows on your Mac, it’s the way to go.
Virtualization Apps
There are three virtualization apps worth considering.
Parallels Desktop and VMware Fusion are very similar options. Neither are free, but they come with great customer support if you need help:
- Parallels runs anywhere from $79.99/yr to $99.99/yr, depending on your needs. That subscription means your software is always up to date, ready for new versions of both macOS and Windows.
- Fusion follows a more traditional model. The current version is $79.99 for a new license, while an upgrade license will set you back just $49.99.
The third option is VirtualBox, an open-source (and free) option. While there is a vibrant online community around this application, if you are virtualizing Windows for work, I think it’s more than worth the price of admission to pick up Parallels or Fusion.
Parallels
Parallels Desktop is the best way to run Windows on your Mac. It offers lots of flexibility when it comes to which operating systems it can run and it offers a customizable experience to make it your own.
Set-up & Settings
Installing Windows 10 from an .iso downloaded directly from Microsoft’s store took just a few minutes. While most people will probably be installing Windows, Parallels can host all sorts of operating systems:
You can install Windows from an ISO, as I did, or even download a trial of Windows from Microsoft within the application. Additionally, Parallels can download a bunch of Linux distros and even download Modern.IE virtual machines, which are helpful when you need to test websites in old versions of Internet Explorer.
Parallels can transfer information from an existing PC, including that computer’s operating system. You can boot your Boot Camp partition as if it were a VM.
For my purposes, I installed the 64-bit version of Windows 10. After installation, I was prompted to create a Parallels account. This ties the app to Parallels’ website, keeping your license keys and subscriptions updated. After logging in, I was greeted with my Windows 10 VM:
There are a whole bunch of settings that can be tweaked. Things like how much RAM is allocated to the VM and what sort of network access it has can be adjusted. You can grant access to hardware like your Mac’s SD card slot, USB ports, and more as needed.
Parallels comes with a bunch of creature comforts too, though.
It can automatically share the contents of your Mac with the VM and vice versa. This means if you create a text file and save it to your Desktop, it will appear on the desktop of your macOS virtual machine:
It can open Mail.app on your Mac if you click an email link within the VM itself, and even automatically pause the VM when you aren’t using it, giving macOS more resources when possible. Parallels can even sync your clipboard across your Mac and its VMs and add your printer to your VM’s operating system automatically.
For those of us with macOS shortcuts engrained into our hands and brains, Parallels can pass those to your VM so you don’t have to hit Ctrl + C to copy when you are used to Cmd + C.
If you want your VM to be completely isolated from its host Mac, you can enable that, too.
Coherence Mode
The integration between host is even visual with Parallels. Running Windows apps can appear in your macOS dock, for example:
By default, Parallels VMs are in their own windows, but in Coherence mode, the lines are blurred. Here’s Finder and File Explorer, side by side, for example:
There’s no Windows background anymore. My Windows apps still look like Windows, but they operate like macOS apps. They appear in the Dock and even the Cmd + Tab switcher. Task bar items are even added to the Mac’s menu bar:
The clever features don’t end there. The Windows start menu can be opened via the VM’s Dock icon or the Parallels menu bar item when in Coherence mode.
In this mode, Parallels truly blends the VM into the macOS experience. If you need access to a single Windows app and don’t want the visual clutter of actually seeing Windows, this mode is for you.
Personally, I like to think about VMs as being contained islands. I don’t mind some limited sharing, but I want there to be a clear separation.
Performance & Utility
It’s hard to measure the speed of virtual machines. Your mileage will vary based on what computer you have, how much RAM it is equipped with, and more.
In measurable aspects, like VM boot time, Parallels was faster than VMware Fusion across the board on my iMac Pro.
Parallels comes with a bunch of virtual machine management tools. You can create snapshots of your VM to restore to at a later time if a software update goes poorly.
The application comes with Parallels Toolbox, a collection of utilities. I’m not sold on the value of these tools, but they come with a subscription to Parallels.
VMware Fusion
Fusion is the big competitor to Parallels, and while it does not require an annual subscription, it lacks some of the polish of its rival. That said, comparing the two applications side by side, there is very little difference in terms of features.
For some users, it may come down to price. Some users simply don’t want an annual subscription. I understand that, but I have more faith in Parallels’ future. VMware is a huge company, owned by Dell. Fusion is just one product in their catalogue, and a few years ago, it was rumored that Fusion may not be long for this world. VMware denied the report, but I can’t shake the feeling that Parallels is a better long-term bet.
Fusion includes a feature named Unity, which is very much like Parallels’ Coherence mode. The Windows backdrop goes away, and Windows apps show up directly in the macOS interface, including the Dock and App Switcher. However, not all of the resources used are Retina quality, leading to blurry icons in places. Worse, the entire system feels slower than Parallels. Even on an iMac Pro, Unity mode will stutter and have to redraw windows instead of smoothly animating them.
Partition Magic
Boot Camp
As virtualization — running Windows inside a macOS app — lets you use both macOS and Windows at the same time, it’s probably the best option for most people. The convenience of having your one or two must-have Windows apps right next to the data and apps on your Mac is hard to beat.
However, virtualization comes with a price: computational overhead. You’ll be sharing your Mac’s CPU, GPU, and RAM across what is effectively two computers. Most modern Macs have more than enough horsepower for this, but if you want to run Windows on your Mac for gaming, Boot Camp is your best bet.
Boot Camp is built into macOS, and supports Windows 10, Windows 8.1 and Windows 7, depending on the age of the host Mac. If you’re running a Mac built in 2012 or later, you should be set for Windows 10.
Be sure to visit Apple’s support pages to verify which version of Windows your machine will support via Boot Camp before you run out and buy something. There’s a lot of fine print here.
Installing Windows via Boot Camp is pretty straight forward. There’s an app in your Mac’s Utilities folder named Boot Camp Assistant. You’ll need it, as well as a disk image file (.iso) of the Windows installer. If you purchase Windows online from Microsoft, you can download an ISO directly from the company’s store.
Boot Camp Assistant will walk you through selecting how much disk space you want to allocate to Windows. This will become a new partition on your Mac’s SSD; the space will be removed from the free space you can access in macOS.
Once the partition is created, you may be prompted to insert a USB drive for Boot Camp Assistant to download the necessary Windows drivers and the OS will install.
Once everything is complete, you can select which OS you’d like to boot into via the Startup Disk preference pane in macOS or the Boot Camp system tray item in Windows.
Boot Camp gives Windows direct access to your Mac’s hardware, meaning it’s a great option for things like gaming or heavy rendering, but for most users who may need access to one or two Windows-only apps, it’s simply too much trouble to reboot between operating systems.
In Closing
Parallels For Mac Change Partition Size Windows
To wrap this up, Boot Camp is great if you need the full hardware capabilities of your Mac to be funneled into your virtual machine. If not, Parallels is an excellent choice. It’s fast, easy to use, and comes with a lot of features that make living in two operating systems easier than ever.