How To Change Boot Camp Partition Size On Mac

1. Boot Camp is an assistant in Mac which allows users to install and use Windows or any other operating systems in a Mac. Boot Camp is a default Mac program inside Mac. Just like Windows or Linux users use Virtualbox to run more than one operating system inside their computer.
2. I run windows via boot camp on my MacBook pro. Running out of memory on the book camp partition. I'd like to allocate more space to this partition, but it doesn't seem like you can simply adjust the partition size.

If you own Intel-based Macs, you can run OS X and Windows on one machine. In fact, it’s been possible to run Windows on a Mac for some time — with agonizing limitations. Near-extinct Mac models were loaded with Virtual PC emulation software could do Windows, too, but the program was painfully slow. Even if you find an old copy of the software, it won’t work with any current Macs.

Boot Camp software from Apple shook up the computing public upon its apocalyptic arrival in April 2006. Boot Camp graduated from beta, or near-finished, status with the arrival of Leopard. Boot Camp Assistant software is stored in the Utilities folder inside the Applications folder.

Boot Camp itself is free. You have to supply your own single-disc or downloadable full-install version of Windows; an upgrade disc won’t cut it.

We will demonstrate a step-by-step process to safely and reliably resize your Boot Camp partition and let you reclaim space needed for either Mac or Windows partitions. In this tutorial we will cover the process of reducing the size of the Boot Camp partition, but the same process can be applied to expanding Boot Camp. What makes it so easy is that you tell Camptune the size you’d like your partition to be and, provided there’s enough free space on your Mac partition to give up some for Boot Camp, it takes. Dec 10, 2019  For more information about using Windows on your Mac, open Boot Camp Assistant and click the Open Boot Camp Help button. If you're using an iMac (Retina 5K, 27-inch, Late 2014) or iMac (27-inch, Late 2013) or iMac (27-inch, Late 2012) with a 3TB hard drive and macOS Mojave or later, learn about an alert you might see during installation.

It’s also important to note that you can use a 64-bit version of Windows, Windows 7 (Home Premium, Professional, or Ultimate), Windows 8, or Windows 8.1. Consult Apple support to see which Mac models are compatible with which versions of Windows. In its current incarnation, Boot Camp isn’t compatible with 32-bit versions of Windows.

Other requirements follow:

• An Intel Mac with OS X version 10.6 or later

• At least 2GB of RAM and 20GB of available space on the Mac’s storage drive that you want to donate to Windows

• A blank CD or USB storage device that you’ll use for Windows software drivers

If you don’t run into snags, the entire installation should take about an hour.

Windows 8 and Windows 8.1 are optimized for a touchscreen environment, though you can use it with a standard mouse and keyboard. For now, Macs don’t support touchscreen computing.

To install Windows 8 via Boot Camp, you still must have a legitimate Windows 8 license from Microsoft and a Win8 installation disc, assuming that you have an optical drive. If you don’t have an optical drive, you may be able to create a Windows installer from an ISO file downloaded from Microsoft on a USB flash drive that’s 8GB or larger.

Because snags are possible, back up all your important information on the Mac’s startup disk.

Basic training

Following are the basic steps to get through Boot Camp:

1. Run Boot Camp Assistant (in the Utilities folder inside the Applications folder) to make sure that you have the latest firmware on your computer and to install any support software from Apple that you might need.

   You’ll find any updates at Apple support. If you’re using a portable computer, make sure to connect the power adapter. You will also be given the option to create a Windows 7 (or later version) install disk for which you’ll need a USB flash drive and an ISO image downloaded from Apple.

2. Follow the prompts in Boot Camp Assistant to create a partition for Windows.

   You’re essentially carving out an area of your hard drive for the Windows operating system,. This partition must be at least 30GB and can swell to the total free disk space on hand minus 30GB. If you don’t plan on doing much in Windows, keep the partition small.

   Drag the divider to set the partitions for both OS X and Windows, or click Divide Equally to make equal partitions. You can’t resize a Windows partition after creating it, though you can replace it with a larger Windows partition.

   If you have a Mac Pro with more than one internal hard drive, you can select which drive to partition. If any of this makes you nervous, know that you can remove the Windows partition later and go back to a single-partition Mac.

3. Insert the Windows CD or a USB flash drive with the Windows ISO file and then click Start Installation.

   If you exited Boot Camp Assistant before installing Windows, open it again, choose Start the Windows Installer, and click Continue.

4. When you’re asked to choose the Windows partition, select the partition that says BOOTCAMP.

   You may have to scroll down to see it.

   Don’t erase any partitions that you see or create a new partition here. Failure to heed this warning could wipe out your entire Mac OS X startup disk.

5. (Optional) If you see a listing for Drive Options, click it; otherwise, proceed to Step 6.

6. Reformat the partition by using the Windows installer: Click Format.

   You’re using the reliable and secure NTFS file system, but you won’t be able to save files to Windows from Mac OS X, at least not without a techie workaround.

7. Follow the onscreen instructions to finish installing Windows.

   Boot Camp 5.1 includes several Mac drivers so that Windows will recognize your trackpad, Thunderbolt, USB 3.0, the iSight (or FaceTime) camera, the Eject key on the Mac keyboard, networking, audio, graphics, and so on.

   A Boot Camp Control Panel for Windows and an Apple Boot Camp system-tray item will be added.

As with any new Windows computer, Microsoft requires that you activate your Windows software within 30 days.

Switching operating systems

You can go back and forth between OS X and Windows on your Mac, but you can’t run both operating systems simultaneously under Boot Camp. Instead, you have to boot one operating system or the other — thus, the name Boot Camp.

Restart your Mac, and hold down the Option key until icons for each operating system appear onscreen. Highlight Windows or Macintosh HD, and click the arrow to launch the operating system of choice for this session.

If you want OS X or Windows to boot every time, choose app → System Preferences, click Startup Disk, and choose the OS you want to launch by default.

You can perform the same function in Windows by clicking the Boot Camp system-tray icon and selecting the Boot Camp Control Panel. Click either the Macintosh HD or Windows icon, depending on your startup preference.

Summary :

How to resize Bootcamp partition? How do increase Bootcamp partition? How do I reduce Bootcamp partition? Now, this post shows how to effectively and quickly change Bootcamp partition size.

Quick Navigation :

Overview of Bootcamp Partition

A reader had a Windows issue, and didn't know how to solve it. He wrote:

Hi, I’m running Windows in a Boot Camp partition on my Mac computer. When I first configured Boot Camp I underestimated how much I’d use Windows. However, recently I'm quickly running out of space on my Bootcamp partition. How can I expand the size of the Boot Camp partition?

Have you ever run into the same problem?

Do you know how to effectively resize Bootcamp partition?

Do you know how to change the size of Bootcamp partition without data loss?

Do you know whether there are free yet professional tools to help to extend or shrink Bootcamp partition? Now, if you haven’t found a suitable solution, you could read this post to find answers. On the other hand, if you had solved this problem, you might also like this post since it offers effective yet free solutions.

In general, when it comes to talking about resizing Bootcamp partition, these following questions would be asked: what is Bootcamp partition, when need to change Bootcamp partition size, how to increase/ decrease Bootcamp partition effectively. Next, let's answer these problems in detail.

What Is Bootcamp

Boot Camp Assistant is a multi-boot utility included with Apple Inc.'s OS X that assists users in installing Microsoft Windows operating systems on Intel-based Macintosh computers.

The utility guides users through non-destructive disk partitioning (including resizing of an existing HFS+ partition, if necessary) of their hard disk drive and installation of Windows device drivers for the Apple hardware.

The utility also installs a Windows Control Panel applet for selecting the boot operating system.

In a word, Boot Camp can help partition your hard drive into 2 partitions. One partition will be used by your Mac to run Mac OS X and the other one will be used to run Windows OS.

However, do you know why we have to make a new partition to install Windows? Well, the reason is that Windows and Mac don’t run in the same format. Mac runs on Mac OS X (Journaled), and Windows runs on NTFS.

Partitioning splits your hard drive into 2 separate sections, each with its own format. This means that you can run Windows OS on NTFS and run Mac on Mac OS X (Journaled) on the same hard drive. Of course, this NTFS partition is called Bootcamp partition which is used to install Windows.

You can read How to install Windows using Boot Camp to know details about installing Windows OS on Mac computer.

When Need to Resize Bootcamp Partition

You can firstly specific the size of Bootcamp partition, and then install Windows on it. However, after running Windows, you may find that your Bootcamp partition is running out of space, and you need to increase its size to continue running Windows OS.

Now, the question is: “How to change the size of Bootcamp partition to meet the needs of Windows?”

Well today, I’m going to make it easy for you.

How to Resize Bootcamp Partition

As we know, if you want to resize Mac partition, you can directly turn to the Disk Utility tool, located in /Applications/Utilities. With this tool, you can grow or shrink HFS+ (Mac OS X) partitions on the fly, with the resizing done live regardless of whether the drive is internal or an external drive, or even the boot volume.

However, Disk Utility can not be used to extend or shrink Bootcamp partition since it is Windows NTFS file system partition. So, it is not an easy task to resize Bootcamp partition.

According to Apple: “If your Windows partition is too small, back up the information on it, delete it, create a larger partition, and then reinstall Windows.” Details are shown here.

Warning: Resizing partitions, even non-destructively is a task that should not be undertaken without a backup. Backup early and backup often!

Traditional Method: Delete Bootcamp Partition, then Create a New Large One

Step 1: Back up all the information on your Windows partition.

Step 2: Delete Windows from your Mac.

• Start up your Mac in OS X.
• Open Disk Utility. (To access the Disk Utility in Mac OS X, just press Command+Space to open Spotlight search, type Disk Utility, and press Enter. You can also click the Launchpad icon on your dock, click the Other folder, and click Disk Utility.)
• Select the Windows disk, click Erase, choose the Mac OS Extended (Journaled) format, and then click the Erase button. (picture is below)

Step 3: Shrink Mac partition to release more free space.

Step 4: Create a new large Windows partition in the free space.

• Select the drive.
• Select the Partition tab
• Click + to add a partition

Step 5: Restore the information you backed up.

On the other hand, with the development of software technology, some software (like Camptune X, Winclone) can help you to resize Bootcamp Partition. And, each tool has its advantages.

To be specific, those familiar with Winclone are aware that with its help you can create a larger Bootcamp partition without losing your original Windows data.

The process involves creating an image of the partition for safe keeping, deleting the original Bootcamp partition with Disk Utility, creating a new, more expansive partition, and then moving the data from the imaged partition to the new one with WinClone.

Although this method is capable enough to enlarge your Bootcamp partition size, you have to delete Windows at first.

Now, you might be wondering:

“Is it possible to resize Bootcamp partition without deleting Windows?”

Boot Camp Increase Windows Partition

The answer is positive!

Alternatively: Resize Bootcamp Partition without Deleting Windows

According to a survey, MiniTool Partition Wizard, a piece of free yet professional partitioning software, proves to be an excellent tool for increasing/shrinking Bootcamp partition without deleting Windows. Next, let’s see the detailed steps.

A step-by-step guide to increasing the size of Bootcamp partition

Step 1: Backup all your files (optional but strongly recommended).

Recommended Boot Camp Partition Size

Step 2: Use Disk Utility to shrink your Mac partition to release some unallocated space as much as you need to add to the Bootcamp partition.

• Open Disk Utility app from /Applications/Utilities/.
• From the left side of the app, select the hard drive you want to partition.
• On the “Partition” tab, drag the separator bar up and down to resize your hard drive partition. (Alternatively, select the partition you want to resize. Enter size value in GB in Size box.)
• Click the “Apply” button to resize the partition.

Step 3: Set Boot camp as Boot Disk and restart the Mac.

• Turn on or restart your Mac.
• Immediately press and hold the Option key. After a few seconds, the Startup Manager appears. If you don't see the volume you want to use, wait a few moments for Startup Manager to finish scanning connected drives.
• Use your mouse or trackpad, or left and right arrow keys to select the volume (Boot Camp) you want to use.
• Double-click or press the Return key to start up your Mac from the volume you selected.

Step 4: Download MiniTool Partition Wizard Free edition from its official website, install it on your computer according to prompts and then launch it to get its main interface.

Step 5: Select the Bootcamp partition and then click “Extend Partition” from the left action panel.

Step 6: Choose the unallocated space from the Take Free Space from and then drag the sliding button to decide how much free space to take. After getting desired space, click “OK” button to go back to the main interface of this free partitioning software.

Step 7: At this time, click “Apply” button on the top left corner and tap “Yes” to apply the change.

You will be asked to restart your computer to apply the task since the Bootcamp partition is being used now by Windows. Now, just please choose “Restart now,” and MiniTool Partition Wizard will automatically finish rest of pending jobs.

After all operations done, you have finished increasing the size of Bootcamp partition without deleting Windows.

Video tutorial for resizing your Bootcamp partition without deleting Windows disk partitioning

In addition to extending partition without data loss, MiniTool Partition Wizard can also help to shrink the size of Bootcamp partition. But, how do I reduce the size of a bootcamp partition? Keep reading to find details!

A step-by-step guide to shrinking the size of Bootcamp partition

Step 1: Set Bootcamp as Boot Disk and restart the Mac.

Boot Camp Increase Partition Size

Step 2: Launch MiniTool Partition Wizard in Windows.

Step 3: Select the Bootcamp partition and then click “Move/Resize” in the toolbar or “Move/Resize Partition” from the left Actions and Wizards.

Step 4: Change the length of partition handle to resize partition. After getting desired partition size, click “OK” to go back to the main interface.

Step 5: Click “Apply” button on the top left corner to apply the very change.

However, here we also want to share another tool, MiniTool Mac Data Recovery, for you since you cannot ensure absolute data security all the time. For instance, you may accidentally delete some data and empty the Trash, format/delete your hard drive partition by mistake, and more.

Mac Data Recovery

Now, lots of Mac users choose to run Windows on their Mac with Boot Camp assistance. However, no matter how wonderful an OS is, Mac data loss caused by various reasons happens more and more frequently.

Therefore, Mac lost data recovery has become a big problem annoying many computer users, especially some users have not backed up their data with Time Machine. (Note; you can use Time Machine to back up or restore your Mac. )

Fortunately, MiniTool Mac Data recovery, developed by famous data recovery solution providers based in Canada, can help to recover data that have been lost in a variety of ways like accidental deletion, partition formatting, etc.

Also, this tool offers wizard-based operation and simple interface, so even a new user can easily handle this Mac data recovery software to recover lost photos, music, videos, emails, documents, and other types of data. What's more, its operations are read-only, so you can use it to recover lost Mac data without affecting the original data.

Conclusion

Hopefully, this article would help to change the size of Bootcamp partition.

If you have any other suggestions about how to resize Bootcamp partition, please leave it in the following comments below. Thanks in advance!

Like this post on how to extend Bootcamp partition as well as how to reduce Bootcamp partition? Share it with more friends.