Mac OS forum


Not able to resize and make a partition of my startup disk

by TheBlueGod / November 25, 2011 6:33 AM PST

Hi, I'm running Lion on a late - 2010 15 inch MBP and I already have a Boot Camp partition of Windows 7. I wanted to partition my hard drive again to install Ubuntu (which should be relatively painless). I tried out the live CD to get a taste of what it would be like, and actually tried partitioning from there, which did not work. So I booted back to OSX and went to Disk Utility, selected my drive and tried to resize my Macintosh HD partition to make space for a 4ish GB partition for Ubuntu. I hit Apply, but then I get this error:

<div>Partition failed with the error:<div>File system resize support required, such as HFS+ with Journaling enabled.

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All Answers

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Let's start with a basic issue.
by R. Proffitt Forum moderator / November 25, 2011 7:06 AM PST

"You cannot partition the drive you used to start your Mac. You have to
startup the Mac in a different drive to partition a drive."

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Same Problem
by lionpenguinwindow / August 16, 2012 3:14 PM PDT

I have created many partitions to my Mac HDD from my Mac HDD disk utility. But now I have ran into the same problem as the questioneer. and I am looking for an adequate answer


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(NT) See macfixit's reply below.
by R. Proffitt Forum moderator / August 17, 2012 12:33 PM PDT
In reply to: Same Problem
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If you are willing to erase and start again
by mrmacfixit Forum moderator / August 17, 2012 8:49 AM PDT

then that would be my suggestion.

Although it is now possible to partition a Mac OSX Extended drive, on the fly, using Disk Utility it is much safer to boot from another disk when attempting it.

Thee are a number of tutorials out there explaining exactly what to do and what the limitations are


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