bootcamp not letting me resize partition

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.

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

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.

The MBR seems to be incorrect. You may have put values in hex code fields, which are no longer default. Can you verify that you used the Q&A section of the link to answer the questions. If not, you can re-execute the same GDisk steps again.

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.

hi, i have a iMac MID2011 e my diskinfo are:

How do I install Bootcamp with windows? Bootcamp deletes the partition and does not let me install? How should I do?

tks

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