Mac Disk Utility Mediakit Reports Not Enough Space On Device For Requested Operation.

Resolving MediaKit reports not enough space on device for requested operation. Operation failed… (External HD problem)

When formatting an external drive from macOS 10.11.x (El Capitan) and macOS 10.12.x (Sierra), and 10.13 (High Sierra) Disk Utility the follow error may occur, moving on to a quick solution for this problem:

There is a easy solution for this,

用磁盘工具格式化时报了MediaKit reports not enough space on device for requested operation这个错误。. Mac格式化硬盘 MediaKit reports not enough space on device for requested operation. 04-09 阅读数 561. 用磁盘工具格式化时报了MediaKit reports not enough space on device for requested operation这个错误。.

Go to the upper left corner and click on show all devices instead of show only volume.

Then you will be able to see the two rows in external column.

now click on unmount on the second volume and make sure it is grey now.

Now click on first part of the external volume

And click on erase and then-

Now make sure

Mac os timer. IF you want the hard disk for mac use only then use these settings.

Else if you want to use on both mac and pc(windows) then in format choose ExFAT.

Then it will format and your work is done.

Refrence:

I just used Disk Utility to make a backup of a MBA (65GB) onto a 500GB external drive (Restore from internal HDD to external HDD). I then reformatted the internal hard disk and proceeded to restore my backup (external HDD to internal HDD). I soon received an error message stating 'Restore Failure - not enough space'. I guess that means Disk Utility backups are a one-way operation, since you can't restore from a larger drive to a smaller one? Is there something I am overlooking? I ended up using Carbon Copy Cloner to do the job, but I'm wondering how (if?) restoring from a larger backup drive is possible using Disk Utility?