- #Mac disk utility partition greyed out high sierra how to#
- #Mac disk utility partition greyed out high sierra install#
- #Mac disk utility partition greyed out high sierra upgrade#
- #Mac disk utility partition greyed out high sierra pro#
- #Mac disk utility partition greyed out high sierra mac#
Once you’ve created your boot drive you’ll need to reboot under it. And off you have the older models it will have limited RAM so that also comes to play. Mojave requires Metal2 graphics services which your system does not have. In the Terminal, running diskutil list will reveal this in even starker contrast. High Sierra intro’ed APFS which only works on SSD’s but using it within a SATA based system is not that great. I do recommend you stick with Sierra Vs any of the newer MacOS’s.
#Mac disk utility partition greyed out high sierra how to#
Here’s how to do this: How to create a bootable macOS Sierra installer drive So you’ll need to make an external bootable drive and besides that you’ll want to put on it the OS installer so you can appear a fresh copy from it. Think of it this way your shoes heel broke off and your stop by a shoe cobbler how is he going to fix your shoe? You need to take it off right! Thats the same here if you want to reformat the drive you need to boot up under a different drive to release the drive from the OS.
#Mac disk utility partition greyed out high sierra install#
When erasing it says “Erase process has failed” with details saying “Couldn’t unmount disk - Operation failed”.Įither make the encryption in FileVault to continue the progress which didn’t work after reading about it and trying things… or to erase the HD and start a new install from my Time Machine backup. I tried to repair or erase “Apple HDD HTS547575A9E384 Media” but it does not work.
Disk Utility will ask you to select the drive you want. You can see Macintosh HD is greyed out as my chosen drive above, click on Restore.
Select the partition you want to use for your backup/clone. Hi guys,Scoured the net for an existing solution to this problem, but to no avail.
#Mac disk utility partition greyed out high sierra mac#
on Disk Images I see “Apple disk Image Media” which is 2.01 GB and has under it “OS X Base System”(1.29 GB) with option to eject which does not work. The partition I used was named Macintosh HD, when the clone is complete it will automatically rename the clone the same as your Primary drive. Disk Utility partition greyed out Mac Cant partition (option greyed out) External HDD on macOS Sierra. In Disk Utilty I see under Internal “Apple HDD HTS547575A9E384 Media” under which is greyed out my “Macintosh HD”. If you hover your mouse over the partition button you can see the tooltip provided by Apple. Now I can not even reformat the HD using Disk Utility from CMD+R mode. The button is grayed out because the drive is set up as MBR which is typically used for drives less than 3TB. I decided to reformat my HD to make a clean install(I have backed up the system with Time machine) after Disk Utility have failed to repair the disk. I think the problem might be something with repartitioning the HD but I see others have problem with encryption as well. After that I went to encrypt my HD using FileVault and it got stuck for days at around 60%. Instead, you should select the disk drive when you want to partition a disk, and the following steps would be helpful. You can't partition a volume (Even though the Partition option is highlighted for APFS volumes).
#Mac disk utility partition greyed out high sierra pro#
I am using an old 40 GB external hard drive to create, resize and delete partition with Disk Utility and Stellar Partition Manager software.I am running Macbook Pro (Late 2011) on Sierra osX.įirst I repartitioned my HD into single partition(I had Bootcamp). Well, it's likely that the Partition option is greyed out in Disk Utility because you select the wrong item. Alternatively, the same procedure will be explained with the help of a disk manager utility known as Stellar Partition Manager. 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.
#Mac disk utility partition greyed out high sierra upgrade#
Very soon we will need to partition our Mac hard drive in order to make room for macOS Sierra installation which Apple announced this WWDC 2016 in San Francisco.īut 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. Some of them find difficult to perform regular disk management activities on Apple hard disk drives including partitioning the disk, creating, resizing and deleting a partition. But this makeover didn’t go well for a handful of Mac users. Disk Utility got a facelift with the launch of OS X El Capitan.