How to increase Boot Camp partition without harming both Mac and Windows partition

horace528

macrumors regular
Original poster
May 14, 2011
140
1
Hello MacRumors Forums.
I have made a Boot Camp partition with my Mac partition, but the problem is that I am running out of space on my Windows partition. (Darn you, Steam Summer Sale! :mad:)
Anyways, is there any way to increase the space on my Windows partition without harming both Mac and Windows partitions? I would prefer if I didn't need to delete the Windows Partition and do everything all over again, as I need to download and set up everything all over again. I also know that changing the Windows partition is a tricky and hard thing, and one step can harm my whole computer, but I think that it is worth the risk.
I really don't care how to do it, anything, from a bootable program, to anything. I just want to know how to do it.
So is there any way that I can increase the Windows partition of my Mac without harming both Mac and Windows partitions? Thanks.
 

yjchua95

macrumors 604
Apr 23, 2011
6,725
231
GVA, KUL, MEL (current), ZQN
Hello MacRumors Forums.
I have made a Boot Camp partition with my Mac partition, but the problem is that I am running out of space on my Windows partition. (Darn you, Steam Summer Sale! :mad:)
Anyways, is there any way to increase the space on my Windows partition without harming both Mac and Windows partitions? I would prefer if I didn't need to delete the Windows Partition and do everything all over again, as I need to download and set up everything all over again. I also know that changing the Windows partition is a tricky and hard thing, and one step can harm my whole computer, but I think that it is worth the risk.
I really don't care how to do it, anything, from a bootable program, to anything. I just want to know how to do it.
So is there any way that I can increase the Windows partition of my Mac without harming both Mac and Windows partitions? Thanks.
Not possible. The only way to resize the BC partition is to completely destroy it.

There is a way, but it's quite fiddly.

Stuff needed:
1. WinClone Pro
2. External Thunderbolt drive (USB 3 drives won't work).

Steps:
1. Use WinClone Pro to clone your BC partition into the external TB drive.
2. Remove the internal BC partition and resize it to whatever you wish.
3. Use WinClone Pro to restore the BC partition in the TB drive back to the enlarged internal BC partition.
 

827538

macrumors 65816
Jul 3, 2013
1,399
1,331
Hello MacRumors Forums.
I have made a Boot Camp partition with my Mac partition, but the problem is that I am running out of space on my Windows partition. (Darn you, Steam Summer Sale! :mad:)
Anyways, is there any way to increase the space on my Windows partition without harming both Mac and Windows partitions? I would prefer if I didn't need to delete the Windows Partition and do everything all over again, as I need to download and set up everything all over again. I also know that changing the Windows partition is a tricky and hard thing, and one step can harm my whole computer, but I think that it is worth the risk.
I really don't care how to do it, anything, from a bootable program, to anything. I just want to know how to do it.
So is there any way that I can increase the Windows partition of my Mac without harming both Mac and Windows partitions? Thanks.
Had this same problem when I first got my Mac. Only way to change it is to start again and reinstall windows on a new partition sadly.
Spent forever looking for a solution and it's just not possible. Personally I allocate 150GB to OS X and 350GB to Windows (mainly for games).
 

Freyqq

macrumors 601
Dec 13, 2004
4,022
172
Hello MacRumors Forums.
I have made a Boot Camp partition with my Mac partition, but the problem is that I am running out of space on my Windows partition. (Darn you, Steam Summer Sale! :mad:)
Anyways, is there any way to increase the space on my Windows partition without harming both Mac and Windows partitions? I would prefer if I didn't need to delete the Windows Partition and do everything all over again, as I need to download and set up everything all over again. I also know that changing the Windows partition is a tricky and hard thing, and one step can harm my whole computer, but I think that it is worth the risk.
I really don't care how to do it, anything, from a bootable program, to anything. I just want to know how to do it.
So is there any way that I can increase the Windows partition of my Mac without harming both Mac and Windows partitions? Thanks.
External hard drive is probably the best solution.
 

Yoshi Yogurt

macrumors regular
Nov 5, 2010
205
32
Had this same problem when I first got my Mac. Only way to change it is to start again and reinstall windows on a new partition sadly.
Spent forever looking for a solution and it's just not possible. Personally I allocate 150GB to OS X and 350GB to Windows (mainly for games).
Going to have decide how to split up my 512GB partition soon...

I have about 100GBs of music and 250GBs of games...

Is there a performance difference on mac-compatible games? I install all my mac steam games on Mac OS, leaving more room on the windows partition...
 

827538

macrumors 65816
Jul 3, 2013
1,399
1,331
Going to have decide how to split up my 512GB partition soon...

I have about 100GBs of music and 250GBs of games...

Is there a performance difference on mac-compatible games? I install all my mac steam games on Mac OS, leaving more room on the windows partition...
The difference is massive. The vast majority of games that are ported to Mac use an OpenGL wrapper which is nowhere near as efficient as native DirectX.
I wish more games were native OpenGL but that's just not the case. But this rMBP runs them extremely well under bootcamp.

Civ 5 for example ran OK under OS X. Installed it in bootcamp and I was able to up the resolution and graphics to max while also seeing a huge boost to FPS. I don't run any games under OS X. I use about 50GB on OS X for music and other things like Photoshop and I use around 200GB for Windows and games. Quite happy with the 150/350 split.
 

Freyqq

macrumors 601
Dec 13, 2004
4,022
172
Going to have decide how to split up my 512GB partition soon...

I have about 100GBs of music and 250GBs of games...

Is there a performance difference on mac-compatible games? I install all my mac steam games on Mac OS, leaving more room on the windows partition...
Performance difference is massive. Games are usually written for Windows and then ported to OSX, so they run much better in Windows. Also, Windows generally has better driver support for gaming. Nvidia, for instance, puts out a new patch every couple months that optimizes graphics for the newest game releases. That just doesn't happen in OSX.

I split the SSD 50%/50% for OSX/Windows. All games/music/pictures go on a portable USB 3 external drive. I have another USB 2 drive that is used for backups.
 

maflynn

Moderator
Staff member
May 3, 2009
66,808
33,778
Boston
Stuff needed:
1. WinClone Pro
2. External Thunderbolt drive (USB 3 drives won't work).

Steps:
1. Use WinClone Pro to clone your BC partition into the external TB drive.
2. Remove the internal BC partition and resize it to whatever you wish.
3. Use WinClone Pro to restore the BC partition in the TB drive back to the enlarged internal BC partition.
Why does USB 3 not work for WinClone :confused:

I have to alter the size of my bootcamp partition and I was just going to bite the bullet and reload windows/apps.

Thanks to OneDrive, all my data is on the cloud so I just need to reinstall my apps. Sizing is now an issue for me, since I need to consider space for Lightroom and converting my Aperture images to that app - my space allocation for OS X and Windows has to change.
-------------------------------------------------------------------------------------------------------------------------
The more I think about it, the more I like the idea of winclone over reinstalling. The only question is why the comment about TB drives over USB3.
 

horace528

macrumors regular
Original poster
May 14, 2011
140
1
I got in deep trouble with a solution, and ended up borking my Windows 7 partition, and almost ruined my Mac partition. Just ended up accepting my fate and reinstalling Windows all together.
 

maflynn

Moderator
Staff member
May 3, 2009
66,808
33,778
Boston
What happen?

based on my early research, yjchua95's steps are solid. I'm running chkdsk /b on my bootcamp partition now, and once done, I'll boot into OS X, buy winclone and start the rest of the steps.
 

yjchua95

macrumors 604
Apr 23, 2011
6,725
231
GVA, KUL, MEL (current), ZQN
Why does USB 3 not work for WinClone :confused:
Windows will not boot off a drive that's detected as USB.

Personally I haven't tried using WinClone Pro over USB, but if someone out there can try it out and see whether it works, by all means, please do so, I'd love to know whether just cloning the BC partition to a USB drive works or not, as well as restoring it back to the internal BC partition from a USB drive.

I can confirm that it works flawlessly over a TB drive though.
 

Yoshi Yogurt

macrumors regular
Nov 5, 2010
205
32
Performance difference is massive. Games are usually written for Windows and then ported to OSX, so they run much better in Windows. Also, Windows generally has better driver support for gaming. Nvidia, for instance, puts out a new patch every couple months that optimizes graphics for the newest game releases. That just doesn't happen in OSX.

I split the SSD 50%/50% for OSX/Windows. All games/music/pictures go on a portable USB 3 external drive. I have another USB 2 drive that is used for backups.
Thank you for clearing that up. I think I might do something like 300GB for Windows and 200GB for Mac. I am going to be on the go a lot with this macbook so no external drives for me. That's why I upped for the 512gb with the GPU.

No point in gaming at all on the mac side if there is even a slight FPS or performance drop, even with games like Team Fortress 2.
 
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