Partitioning my External Hard Drive

Mikeymusic89 Said:

“Partitioning my External Hard Drive: I want to partition my External Hard Drive. I have erased and Formatted it to Mac OS Extended (journaled) and the partition option in Disk Utility is still greyed out.[...]”

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Try these Methods to Troubleshoot this:

How Else to Attempt this Format:

See if this becomes readable by:

• Using Another Mac (or even a Windows PC), as permissions may be in the way somehow
• Booting into Safe Mode (Hold Down “shift” upon boot), in which unnecessary items are placed aside, and fixed are made toward a success it log In
• Removing Security Software, as it may have become encrypted
• Creating a new Administrator, seeing if you can perform this in that account. If so, then it is something misconfigured in your current user

Read/Write Errors:

Your hard drive may have become damaged/unusable, and if that is the case then, contact the manufacturer for assistance. Note that data recover can be quite pricey at times. That’s just the way it is :(

Format Type:

Verify that the format-Type is readable by your version of Mac that you are currently using.

Disk Utility>View>Show All Devices> partition the parent drive

Disk Utility User Guide for Mac - Apple Support

"I tried the same operation on a different macbook and it has worked."

So you accomplished your mission(?)

Mikeymusic89 Said:

“Partitioning my External Hard Drive:Thank you TheLittles, I tried your first recommendation and used another mac. It worked! All sorted, and my hard drive is now partitioned”

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You are most welcome!