During the past week, I've been wondering how people can really find a potential solution to a problem with such poor information on the web, even in the Mac support site. Well, if you ever experienced issues about missing space just after deleting an old partition for whatever reason, you might need to take a look to this.
One of the best things about getting a Mac in the past years, is having the ability to run multiple OS managed by either a Virtual Machine, or using Boot Camp having a separate partition for your Windows Operating System.In fact, one of the reasons I migrated from Windows to Mac, is that you can run both OS's. Of course you can now run Mac OS on any PC using a Virtual Machine Emulator. However, Apple products provide a much better design and aesthetic quality that looks competitive even after 2 or 3 years.
If you had this problem mentioned above, where you are missing space after deleting a partition in Mac OS, you might want to hear the following.
"If you delete a partition, Mac OS will not put it back to the original partition"
This sounds very logical, and stupid, but believe it or not, there are thousands of blogs not providing this information to Mac users, where they recommend using tools like Disk Inventory X, iDefrag, among others. Not useless of course, but far away from the original problem.
Many users believe that deleting a partition, will restore the OS space to the original partition. But here's the truth, check the picture below.
Click to enlarge
As you see above, the image belongs to Disk Utility on a Mac for a 250 GB HDD. The size is of 180.53 GB, where 23.4 GB space is available. Considering the real size of the disk due to the OS space, and other stuff is of about 230 GB, you might wonder where is the 50 GB HDD space missing? Check the picture below.
Click to enlarge
Unless you drag the space, and click Apply on Disk Utility, Mac will leave that empty space blank, waiting for someone to come and claim it! Not exactly, but is a waste of space left nowhere. As stupid as this post sounds, or the instructions are, be aware that there are thousands of people over the internet with this problem, and none of them instruct to even look at the partition space missing.
Be aware you must click on the HDD, not the partition (Macintosh). Then you'll see an option called "Partition" (of course...).
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