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bootcamp not letting me resize partition

Hi,


I have a mac mini, (Mac mini (Late 2012)) and I am trying to install windows on it. I have high sierra installed and when I run Bootcamp I cannot resize the partition. I want to split it 50/50 but it first comes up with -8GB. If I click on the windows partition it jumps to 48GB but if I hit divide equally it goes back to -8gb. Does anyone have any ideas on how to fix this?


Thanks in advance.


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Mac mini, macOS High Sierra (10.13.3)

Posted on Jan 31, 2018 12:21 PM

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Posted on Feb 2, 2018 11:59 AM

Much better. Connect your USB2 installer, reboot the 2012 Mini, and hold Alt/Option key and select the Windows icon from the USB. It should start the legacy Windows installer. Select the GPT4/MBR4 partition and try to install Windows. If you see any errors, please post the exact error message or a screen shot, if possible.

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Feb 2, 2018 11:59 AM in response to SnifferDog

Much better. Connect your USB2 installer, reboot the 2012 Mini, and hold Alt/Option key and select the Windows icon from the USB. It should start the legacy Windows installer. Select the GPT4/MBR4 partition and try to install Windows. If you see any errors, please post the exact error message or a screen shot, if possible.

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Feb 2, 2018 10:15 AM in response to SnifferDog

We are going to convert the last partition from HFS+ to FAT. Run


diskutil eraseVolume fat32 BOOTCAMP disk0s4



After it is converted, can you use Re: El Capitan has deleted my bootcamp windows partition as a reference and create a MBR overlay and post the output of


sudo fdisk /dev/disk0

sudo gpt -vv -r show /dev/disk0

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Feb 1, 2018 3:26 PM in response to SnifferDog

Enable the first two options, uncheck the last option (install) and rebuild the USB2 Flash drive installer and keep it aside, temporarily. Now partition the disk using Disk Utility and create a FAT partition of the size you want Windows to be.


Post the output of the commands.

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Feb 2, 2018 12:20 PM in response to SnifferDog

Excellent. Please remember to back up macOS, Windows and create a Windows System Restore point, before you allow any Windows Updates. Be careful with drivers from Windows Updates. There are problematic Intel GPU updates that are not valid for Macs.

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bootcamp not letting me resize partition

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