If you install macOS on an additional volume of your startup disk, you can switch between that macOS and the macOS on your other volume, as if each were on a separate disk. And because storage space is shared across APFS volumes, you don't need to reserve space for the new volume. Its size automatically adjusts to fit your content.
Nov 20, 2009 You just plain need a backup. If you remove the Windows partition, you can add the available space to the Mac OS partition, and then “Apply”. Removing any partition removes all files on that partition. Sorry to say the obvious, but someone may need to know. BTW, you must use Boot Camp to create any Windows partition on a Mac. Jul 05, 2010 Resizing Windows That Are Off Screen in Mac OS X. We’ll share three different tricks that work to bring an off screen window back on screen again on the Mac: The first method you should try is to click the green button in the window titlebar, this will resize the window to fit to the available screen resolution. Of course, this is assuming.
What you need
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Dec 01, 2018 I've only done bootcamp once before but it looked like there were additional options with Mojave like reformatting it back to MacOS, etc. Is it possible to expand the partition more if needed? I'm running an eGPU now so loading some games in and my 250GB is going to get full fast.
Your Mac must already be using macOS High Sierra or later on an APFS-formatted startup disk. Find out which format your startup disk is using.
You don't need to reserve storage space for the new volume, but macOS needs as much as 20GB of available space to install, depending on the version of macOS. If you don't have enough space, the installer will let you know.
About This Mac includes a storage overview: Choose Apple () menu > About This Mac, then click Storage.
How To Resize Mac Partition Disk Utility
Back up your Mac
It's a good idea to back up your Mac first, especially if you're installing a beta version of macOS. Beta software is software that is still in development, so some apps and services might not work as expected.
Add an APFS volume
- Open Disk Utility, which is in the Utilities folder of your Applications folder.
- In the sidebar, select your existing APFS volume.
- Choose Edit > Add APFS Volume from the menu bar, or click in the Disk Utility toolbar. These options are available only when an APFS volume is selected.
- Type any name for the new APFS volume, then click Add:
- Disk Utility should now show the new volume in the sidebar. The new volume will also appear in the Finder, as if it were a separate disk. You can now quit Disk Utility.
Install macOS on the volume
App To Resize Mac Partition Mojave Free
Choose an installation method:
- To install a beta (prerelease) version of macOS, enroll in the Apple Beta Software Program and follow the installation instructions on the program website.
- To install a release version of macOS, you can use macOS Recovery. The keys you press at startup determine which macOS is installed.
When the installer opens and you're asked to choose where to install, click Show All Disks, then select the new volume.
Switch between macOS versions
After installation is complete, you can use Startup Disk preferences or Startup Manager to quickly switch between each macOS:
- Choose Apple () menu > Startup Disk, then click and enter your administrator password. Select the volume that you want to use, then click Restart.
- Or press and hold the Option key during startup. When prompted, choose the volume that you want to start up from.
Keep the macOS on each volume up to date
To find the latest updates for each version of macOS, check for software updates, then start up from the other volume and check for software updates again.
Learn more
If your Mac is using macOS Sierra or earlier, or the startup disk is formatted as Mac OS Extended instead of APFS, you can create a new partition instead. The space it occupies doesn't automatically adjust to fit your content, so you must manually size the partition. Learn how to add a volume to a device formatted as Mac OS Extended.
Long story short I vitally need to run an app that only runs on Mojave, and I've already upgraded my computer to Catalina (and I do not have a proper backup to 'downgrade'). So I'm left with four options that I need help with (I've listed them in the order of particularity that would be my best options)
1.) Is there a way to partition my hard drive (I have plenty of space) to run macOS Mojave separately, but on the same computer (like Parallels, I assume)?
2.) I am running Parallels Desktop; I will see if the application works if I download through Windows - however, I am not sure how stable Parallels is on macOS Catalina...
3.) Is there a way to downgrade to Mojave without losing all of my data (i.e., basically just install Mojave like an 'update' and have it install over all of my stuff so everything works fine).
4.) Get another computer that's running Mojave (either purchase used or use a family member's for the task)