![cant resize mac disk image cant resize mac disk image](https://i.stack.imgur.com/gl4kC.png)
- #Cant resize mac disk image how to#
- #Cant resize mac disk image mac os#
- #Cant resize mac disk image free#
Once the Home Videos partition has been enlarged, you can reclaim some of the space for the smaller iTunes partition you also need. You can now remove the iTunes partition to allow you to enlarge the Home Videos partition to meet your expected needs. To make room for a bigger Home Videos partition, use the Finder to copy the data in the iTunes partition to the Photos partition.
#Cant resize mac disk image free#
After a while, it become apparent that the home videos library needed more room, due to all the movies you enjoy making, and the iTunes library was much larger than needed, while the photo library partition was about the right size, though still having plenty of free space. Originally, the idea was to store three libraries, each on their own partition: a home videos library, the iTunes library, and a photo library. In this example, there’s a disk that had previously been partitioned into three equal size volumes. OK, with those mind-boggling rules out of the way, let’s try an example of resizing a partition using Disk Utility that encompasses many of the resizing issues you may encounter.Įnlarging a Partition That Is Running Out of Space Deleting a partition will cause the freed up space to be added to the partition that precedes it.This new partition will be sized to fill the available space. Reducing the size of a partition will cause a new partition to be created directly behind the partition you’re reducing.Enlarging a partition requires that the partition coming after it be deleted.The last partition on a disk can’t be enlarged, though it can be deleted.Removing a Boot Camp partition that is part of a Fusion Drive and resizing the remaining partition should be performed with the Boot Camp Assistant and not Disk Utility. Because of the complexity, we won’t be addressing core storage tricks, or resizing or partitioning Fusion Drives in this article.įusion Drives and Boot Camp are another special case. To add another wrinkle, partitions that are part of a Fusion Drive can’t be resized using the Disk Utility GUI, even though it’s possible (though very complicated) to resize using the Terminal core storage commands. Apple allows a Fusion Drive to have up to two partitions however, the SSD is never included in the second partition, which is made up only of the conventional hard drive.
![cant resize mac disk image cant resize mac disk image](https://www.itropics.net/images/disk-mgmt-select_disk.jpg)
They’re made from two separate disks: a fast SSD and a slower, but much larger, conventional disk drive. Currently, only disks formatted with the GUID Partition Map support resizing.įusion Drives are a special case. Resizing is limited to specific disk formats. In addition, there are times when, because of the type of changes you wish to make, you’ll be forced to delete one or more partitions to accomplish your goals having a backup is key to a guaranteed successful completion. Although the basic idea is to resize a volume without losing data, it’s always better to play it safe. Be sure to pay attention to these rules.Īlso, it’s a good idea to have a current backup.
![cant resize mac disk image cant resize mac disk image](https://i.stack.imgur.com/T9ua1.png)
For the most part, the resizing capabilities in Disk Utility need some careful attention to details to ensure the results you want will occur.
#Cant resize mac disk image how to#
We’re going to look at how to resize a partition without losing data with the new (OS X El Capitan and later) version of Disk Utility.ĭisk Utility can be used to resize existing partitions you may have on a disk, but there are some rules that govern whether you’ll be able to make the changes you envision.
#Cant resize mac disk image mac os#
(Disk Utility from older versions of the Mac OS was arguably easier to use for resizing partitions.) Resizing was pretty straightforward with OS X Leopard through OS X Yosemite, but starting with OS X El Capitan, Disk Utility underwent a user interface makeover that altered how partitions were resized. Thankfully, you can now resize a partition without losing data, provided you follow a few basic rules.
![cant resize mac disk image cant resize mac disk image](https://i.stack.imgur.com/5r20n.png)
That’s because changing the partitions, by adding, removing, or resizing, resulted in the loss of all data on the volume. Before OS X Leopard, you needed to fully back up all the data on a drive if you intended to alter the drive’s partition map in any way. With the advent of OS X Leopard, Disk Utility picked up a much-prized feature: the ability to non-destructively resize existing volumes and partitions. It has been the go-to tool for formatting a Mac’s drives, erasing data, securely wiping information, and creating multiple partitions. Disk Utility, the all-purpose tool for working with storage devices connected to the Mac, has long had the ability to create partitions and manage the resulting volumes.