When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.) Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility. Click the First Aid tab. Disk Utility is the name of a utility, created by Apple, for performing disk-related tasks on macOS. These tasks include: The creation, conversion, compression and encryption of disk images from a wide range of formats read by Disk Utility to.dmg or.cdr, which is identical to the.iso format.

Summary Disk Utility got a facelift with the launch of OS X El Capitan. But this makeover didn’t go well for a handful of Mac users. Some of them find difficult to perform regular disk management activities on Apple hard disk drives including partitioning the disk,. Good News Arriving Soon Very soon we will need to partition our Mac hard drive in order to make room for installation which Apple announced this WWDC 2016 in San Francisco.

Tip But before the time arrives to partition the Mac hard drive for macOS Sierra installation, it is equally necessary to backup the data on Mac startup disk drive to avoid losing any files during the upgrade or installation processes. OS X El Capitan Partitioning With the help of screenshots, I will be explaining some basic set of activities that are to be done while partition the OS X El Capitan drive. Alternatively, the same procedure will be explained with the help of a disk manager utility known as Stellar Partition Manager. Background I am using an old 40 GB external hard drive to create, resize and delete partition with Disk Utility and Stellar Partition Manager software. ** Resolving Partition Option Greyed Out issue • Select the external disk from the left side of Disk Utility • Unfortunately, the Disk Utility partition option is greyed out (see below screenshot). Unable to resize Mac partition Entered 15 GB for Partition A and pressed Return.

The ‘Partition A’ shrinks to 15 GB but created a new partition of 5 Gb, which is unused. Now as per our second task, we need to create around 12 Gb for Partition B.

Let’s see if Disk Utility allows us to do it perfectly. Unfortunately, neither the mouse slider nor the Size box is accepting the Partition B to expand to ~ 12 Gb in size. The same issue is bothering ‘Partition C’ which is not expanding to ~13 Gb of size either through the partition slider or with the help of the size box. No Productivity Since the partitioning as mentioned in Task 2 cannot be done with the help of Disk Utility on OS X El Capitan we will choose to achieve this task with the help of Stellar Partition Manager utility. Hi, I got a problem as simple as it gets about Mac inbuilt utility, i.e. Disk Utility.

Few times ago, I did two partitions of my Mac hard drive, and names them as “Mac HD” with 32500 GB long and another one “Windows 7” with 50353 GB long. Initially, it was planned to install Windows on the 2nd partition, but I didn’t do it, because I have purchased a laptop with Windows 10. Download firefox qusantum for mac windows 10. So, Now I want to delete that Widows 7 partition and make my original partition large so that I have just one partition.

My main question is, whether enlarging in primary partition would lose in data? Hi Jessica, Removing a partition from Disk Utility is simple however the available free spaces must get merged into another partition. At times, Disk utility fails to do so.

Hence I recommend application with which you can create a bootable USB. Using boot USB, you can remove the third partition and merge its free spaces to the partition of your choice. Other advantages of the mentioned application are – support for HFS, NTFS, FAT and EXFAT file systems, add, create, delete and hide partitions. Hope this answers your query. Advice please!! I’m recovering data from an internal mac hd I once had in a damaged Macbook Pro. I only use Windows laptops now and the internal hard drive does not copy the folders over to my WD passport external hard drive.