Question Bootcamp question: how to change the size of the MacOS and Windows partitions?

[rd1066_2]

Hi,
I have a intel MacBook equipped with a 1TB hard drive, I'm using dual boot with bootcamp. I have about 120gb dedicated to the MacOS partition and the remaining 750gb are dedicated to the Windows partition. The reason I have this configuration, is that when I bought the MacBook, it came with a 250gb hard drive, I installed Bootcamp and created two partition 120gb for MacOs and 120gb for Windows.
However,after a while I bought a new 1TB SSD drive and cloned the old 250gb drive into it and it just worked fine out of the box. Then I was able to extend the windows partition to 750gb using Windows disk manager tool.
So in the end I had :
120gb MacOS partition
750gb Windows partition
However now, I'm running out of space on MacOS and I would like to extend the MacOS and to shrink the Windows partition (which has plenty of unused space) without damaging anything. I thought this would be an easy operation to do but I was wrong.
I would like to have: 500gb for Windows and 500gb for MacOS.
What's the easiest way?
Thank you

 

[Lafong]

It's an easily handled situation with 2 ordinary Windows partitions.

BUT BUT for all I know the fact that you have a "Mac" partition may severely complicate things.

 

[rd1066_2]

Bad news: I tried using AOEMI partition assistant to move and resize the partitions ,but at some point the operation failed.

Now the bootcamp partition does not boot!!!.
I get this error every time I try to boot to Windows:

(blue screen)
Your PC/Device needs to be repaired
The application or operating system couldn't be loaded because a required file is missing or contains errors.
File:\Windows\system32\winload.exe
Error code:0xc0000225

You'll need to use recovery tools. If you don't have anyinstallation media (like a disc or USBdevice), contact your PC administrator or PC/Device manufacturer.



(luckily the MacOS works fine)

 

[rd1066_2]

Disk Utility shows a negative used space (-65gb) for the Bootcamp Windows partition wtf ...
Luckily I backed-up most important data from bootcamp

 

[rd1066_2]

Update: I deleted the bootcamp partition, it's all gone now!

 

[rd1066_2]

I reinstalled bootcamp.
Now everything is ok: I have 500gb for MacOS and 500gb for Windows 10.

 

[rd1066_2]

It's an easily handled situation with 2 ordinary Windows partitions.

BUT BUT for all I know the fact that you have a "Mac" partition may severely complicate things.

Indeed it was a PITA to do this kind of operation.
I ended up wiping the Windows 10 partition (after backing up important data) and reinstalling Bootcamp all over again!