In response to sundy_1. For your case, you will select ‘.
You can confirm if the process was successful on your desktop. Partition button is still greyed out. In this post, we will guide you through a step-by-step process on how to restore a grayed-out Disk Utility partition. It's now renamed Seagate Portable (as opposed to my personalised name beforehand) and shows its own partition named simply "External," but that appears to have solved the issue as partition is now an option when highlighting the HDD. Post the output here. That should give you the Partition button back. If you hover your cursor over the greyed out 'Partition' button after you highlight the name of the physical disk as we discussed earlier you will probably see this message pop up.."Disks with Master Boot Record partition maps can not be partitioned" We hope the above solutions helped you to restore the grayed-out Disk Utility partition. You will see additional disk icons show.
To start the conversation again, simply ask a new question.
If it does, then give the amount of partitions you wanted and proceed. Thereafter your disk should be formatted correctly for HFS+, Nov 15, 2015 6:26 AM in response to greg sahli
After following your instructions and pressing partition from the main listing of my hard drive in disk utilities, I got a message saying I needed to click the external option of my hard drive (which was the listing under the main hard drive) "file" and "enable journaling." sundy_1, Can't partition (option greyed out) External HDD on Mac OS X El Capitan, User profile for user: Part 2: Partition USB drive macOS High Sierra If your USB drive is formatted as GUID Partition Map, the Partition button should now no longer be greyed out. Software Tested – Your Online Guide to Mac, Android, and PC Tips, Tricks, and Solutions.
Problem 1: Sometimes, you cannot access the Mac Disk Utility partition because your hard drive doesn’t have sufficient space. In other words, you have to erase the data on your drive to create additional space. In response to sundy_1, Nov 15, 2015 6:28 AM in response to sundy_1 To format your external disk to be compatible with macOS, connect your hard drive to the Mac and follow these steps: If it reads “Mac OS Extended (Journaled)”, congratulations, you successfully restored the grayed-out Disk Utility and your hard disk is now compatible with macOS. Your email address will not be published. Fear not, we have a solution to this problem. Thanks in advance! Thanks for the reply. I believe that most UFD ( e.g USB Flash Drives or sticks) come with Master Boot Record partition maps because they are most commonly used on PC's.
You are the man. If you choose any other drive, the partition option will become unclickable. After that, go ahead with your partitioning plans.
I've restarted Disk Utility numerous times, but nada.
The best way to guarantee the best performance for your Mac is to scan and clean the computer.
Here’s What You Can Do, How to Turn Off Automatic Hiding of the Menu Bar in macOS Big Sur 11, How to Remove AssistiveDisplaySearch on Mac, Choose the drive name within the list provided under ‘, Wait for a window asking you to select the file system you want to use to format your external drive to pop up.
However, it's possible that your MacBook Pro, iMac, Mac mini or MacBook Air boots to black screen of death and its Macintosh HD is greyed out in macOS Recovery mode. Partitioning a disk on a Mac is an effective way to organize your data into different categories. More When I look at it on my Mac, it then tells me it's empty. Required fields are marked *.
Now that you have prepared your hard drive to work with Mac, the next step is to partition it on your Mac by following these steps: Pro Tip: If the main reason for partitioning your hard drive is to install Windows, Apple recommends that you use Boot Camp Assistant instead of Disk Utility. But somehow, you cannot access the Mac Disk Utility partition, so you can’t write data to the drive.
I've already erased through Mac OS X Journaled.
This has gotten even stranger. Hi! Can't partition (option greyed out) External HDD on Mac OS X El Capitan Looks like no one’s replied in a while. Important Note: Before formatting your hard drive, back up your most important files. diskutil erasedisk hfs+ External GPT /dev/disk2, Nov 15, 2015 6:29 AM in response to Alberto Ravasio By default, a Mac runs a different file system, so it may bring issues while partitioning your disk on Disk Utility. Mar 27, 2016 9:00 AM in response to sundy_1 Nov 15, 2015 6:27 AM in response to sundy_1 Any help is majorly appreciated. After doing that the disk utility still wouldn't let me use the partition facility.
In Disk Utility (with GUI), even if options are grayed out, try to partition that disk - partition to 2 or 1, does not matter, just to see if the partitioning get done properly. I know the screenshot reads MS-DOS, but I have in fact already erased as OS X Journaled, hence the confusion as to why the screenshot that appears on this forum appears different (really strange).
Alberto! Select your drive in the sidebar (A) and click Partition (B). Hello, On a Mac Book Pro/ El Capitan, i'm trying to partition an USB stick with Disk Utility but the "Partition" button is disabled. Nov 15, 2015 2:13 AM in response to bigschwabbel
Below is a screenshot of the information of the hard drive and the current state of disk utility, partition is greyed out when the hard drive is selected. Kindly start your own thread concerning your exact problem. Confirm the changes by clicking the, Wait for the process to complete.
In response to Alberto Ravasio. To start the conversation again, simply ask a new question. Nov 15, 2015 2:05 AM in response to sundy_1 Also, let us know if you experienced challenges during the partitioning process. You can then format your hard drive using GUID Partition Table. In response to greg sahli, Jan 23, 2016 12:12 AM in response to sundy_1 When I run diskutil list on my terminal, this is what I get now, after using the proposed hfs+ command: Last login: Sun Mar 27 12:28:21 on ttys000, #: TYPE NAME SIZE IDENTIFIER, 0: GUID_partition_scheme *121.3 GB disk0, 1: EFI EFI 209.7 MB disk0s1, 2: Apple_CoreStorage Macintosh HD 120.5 GB disk0s2, 3: Apple_Boot Recovery HD 650.0 MB disk0s3, 0: Apple_HFS Macintosh HD +120.1 GB disk1, #: TYPE NAME SIZE IDENTIFIER, 0: GUID_partition_scheme *1.0 TB disk2, 1: EFI EFI 209.7 MB disk2s1, 2: Microsoft Basic Data TT 999.9 GB disk2s2. Mac users have also reported slow performance, random freezes, and space issues. I'm attempting to partition a 500gb external HDD to run bootcamp, but whenever I go into Disk Utility, the option to partition the drive is greyed out.