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Disk Utility Creating Wrong Partition Sizes

Pretty straightforward problem.


1. Partition a 4TB disk into 2TB/1TB/1TB

User uploaded file


2. Get totally screwed up partition sizes:

User uploaded file

What is going on, and how do I create the partition sizes that I want?

10.11.1 all software updated to latest.

Thanks!

Posted on Nov 6, 2015 2:19 PM

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Question marked as Top-ranking reply

Posted on Nov 6, 2015 3:06 PM

It appears I have solved the issue; Here's the rest of my journey for anyone else who may have this issue:


Starting from the above screen shot:


Tried to re-partition the existing partitions into a single 4TB

Failed with error:

User uploaded file


Erased main drive, yielded a 4TB partition. Partition map showed a non-removable 0kb "Untitled" partition.

User uploaded file


Proceeded to partition as 2/1/1TB (Note the odd-looking graph)

User uploaded file


The "Untitled" partition is gone, and Disk Utility shows the partitions correctly on the graph, but is missing a partition on the list.

User uploaded file


Quitting/Restarting Disk Utility now shows the previously missing partition. All seems well from this point.

User uploaded file

Seems like buggy native software from Apple; Sad to see... I will report back if something goes wrong.

1 reply
Question marked as Top-ranking reply

Nov 6, 2015 3:06 PM in response to kenji2

It appears I have solved the issue; Here's the rest of my journey for anyone else who may have this issue:


Starting from the above screen shot:


Tried to re-partition the existing partitions into a single 4TB

Failed with error:

User uploaded file


Erased main drive, yielded a 4TB partition. Partition map showed a non-removable 0kb "Untitled" partition.

User uploaded file


Proceeded to partition as 2/1/1TB (Note the odd-looking graph)

User uploaded file


The "Untitled" partition is gone, and Disk Utility shows the partitions correctly on the graph, but is missing a partition on the list.

User uploaded file


Quitting/Restarting Disk Utility now shows the previously missing partition. All seems well from this point.

User uploaded file

Seems like buggy native software from Apple; Sad to see... I will report back if something goes wrong.

Disk Utility Creating Wrong Partition Sizes

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