MacOS – Unable to shrink a partition in osx 10.10

bootcampdisk-utilitymacospartitionwindows

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Hi, I installed windows using bootcamp, but i made the mistake to make the bootcamp only 20gb, so i want to expand it. I found a way to do so, but firstly i need to shrink my other partition – Macintosh HD, why am I unable to do so? Thanks

Best Answer

Well, I have another solution; hope it would work fine. Backup Windows data (bootcamp) firstly. Use Bootcamp utility to delete the existing Windows partition. Once you delete it, recreate new Windows partition with Bootcamp a little larger as you desire. Then reinstall Windows.