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1. #Make a 200gb partitiion my mac for bootcamp mac os#
2. #Make a 200gb partitiion my mac for bootcamp software#
3. #Make a 200gb partitiion my mac for bootcamp windows#

My internal drive was already using 359GB of space, so when I typed in 200GB, it automatically changed it to 359GB and put up a message stating that the first volume cannot be removed and the volume could not be split because the resulting volumes would be too small. Since you already have OS X installed on your internal drive, when you click Partition and choose a size, you’ll notice that you can’t create a partition that is smaller than the amount of space already used on the drive. Partitioning an internal hard drive is pretty much the same in terms of the procedure you have to follow, but it’s a little bit different in how it gets implemented.

#Make a 200gb partitiion my mac for bootcamp windows#

You can also choose exFAT if you like as that is compatible with both Windows and Mac. Since this is going to be for Windows storage, I chose MS-DOS (FAT). Give the partition a name, pick a size and choose the format.

Now to partition the rest of the space, you will click on Untitled under External and then click on Partition again. Now select Done and you’re done with the first partition. When completed should see the green check mark next to your drive and it should say Operation Successful. After this, it will take a few minutes to partition, so be patient! Select how you would like to partition the drive (refer back to my percentages, as that’s what I have used in the screenshots here), select Apply and then click Partition. In my case, I chose a size of 500 GB, which is one-third of the drive. Select Partition and create the partitions based on your specific needs. Go to the top where it has the options: First Aid, Partition, Erase, Restore, Mount, etc. Now you’re ready to partition the external drive! OS X may ask you if you want to use the drive for Time Machine backups, but you should choose Decide Later unless you want to use the entire drive for the backups.

#Make a 200gb partitiion my mac for bootcamp software#

This will prevent anyone or any software from recovering any previously written data from the drive. If you move the slider to Most Secure, it will meet the DOD standard for erasing data by overwriting the data 7 times.

By default, OS X will use the fastest method, which not does securely erase the drive. Note that you can also click on Security Options and choose from different levels of security. If you plan to use the drive for Boot Camp, you should also pick GUID. However, if you plan to boot from the drive, you should pick MBR for Windows and Linux and GUID for OS X. If you’re only using the drive for storage, then it doesn’t really matter which one you pick.

#Make a 200gb partitiion my mac for bootcamp mac os#

NOTE: If your external hard drive is not formatted for the Mac operating system, you may first need to Initialize it and then Erase it. Navigate to that external hard drive and partition it according to your needs. Under the External heading on the left hand side, you should have one hard drive instead of 3 (I have already partitioned mine). Yours will look a little bit different than mine. On the left hand side, navigate to the tab that says EXTERNAL.

To partition the drive, go to Spotlight at the top of your MacBook Screen (Notification Bar) and type in Disk Utility. If you have an even larger drive, you can create even more partitions for other operating systems like Linux, etc.