Solution: The right way you should follow when selecting a partition option is to choose the drive name within the list provided under Internal or External (depending on the device you want to partition). In most cases, users choose the wrong partitioning option, and as a result, the Partition option in Disk Utility remains grayed out. Problem 2: As mentioned earlier, external drives are usually not compatible with macOS, which may bring issues when you want to partition. Needless to say, the process will get rid of all the data on the disk, so you risk losing your files for good. Important Note: Before formatting your hard drive, back up your most important files. After that, go ahead with your partitioning plans. You can then format your hard drive using GUID Partition Table. In other words, you have to erase the data on your drive to create additional space. Solution: If you want to go ahead with the partitioning task, you need to create more space on your hard drive. Problem 1: Sometimes, you cannot access the Mac Disk Utility partition because your hard drive doesn’t have sufficient space. Why Partition Grayed Out in Mac (Plus Solution) About Outbyte, uninstall instructions, EULA, Privacy Policy. Many Apple users who have faced Partition grayed out in Mac issues eventually partitioned their external hard drives with the help of these fixes.
#PARTITIOINING FOR MAC SIERRA HOW TO#
In this post, we will guide you through a step-by-step process on how to restore a grayed-out Disk Utility partition. But somehow, you cannot access the Mac Disk Utility partition, so you can’t write data to the drive.įear not, we have a solution to this problem. Probably, you just bought your external hard drive and are eager to use it on your Mac. In a thread on Apple’s support forum, users complain that their Mac Disk Utility partition grayed-out while trying to partition their external hard drives. Hard drive partitioning is a common issue discussed in many tech forums. By default, a Mac runs a different file system, so it may bring issues while partitioning your disk on Disk Utility. However, the main concern is that most external hard drives and USB keys come formatted for Windows, which is primarily for PCs. If not, you will have to use the Terminal to make the RAID.Partitioning a disk on a Mac is an effective way to organize your data into different categories. If so, then tell me what it is labeled as in the menu.
You can help me by opening Disk Utility and looking under the File and Edit menus to see if there is a RAID option in one of the menus. Now here is where I'm not sure of what to do in El Capitan since I've been using Sierra and High Sierra for some time. Click on the Apply button and click on the Done button when it is activated.
#PARTITIOINING FOR MAC SIERRA MAC OS#
Set the Format type to Mac OS Extended (Journaled.) In the drop down panel set the partition scheme to GUID.Click on the Erase tab in the Disk Utility toolbar.After Disk Utility loads select the drive (out-dented entry with the mfgr.'s ID and size) from the side list.Open Disk Utility in the Utilities' folder.The first step is to partition and erase each drive.ĭrive Partition and Format - El Capitan or Later If the drive you have is still being manufactured then get the identical model. If you cannot get another drive that is identical to the one you have then get one that has the same capacity, same manufacturer if possible, and rotational speed (RPM) as the drive you now have. To make a RAID array is pretty simple, really.
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