• Did you order new AirTags? We've opened a dedicated AirTags forum.

levmc

macrumors 6502a
Original poster
Jan 18, 2019
576
21
Is says "An error occurred while partitioning the disk. Please run Disk Utility to check and fix the error."

And it still says that even after I ran disk utility.
 

levmc

macrumors 6502a
Original poster
Jan 18, 2019
576
21
Could this be because I don't have enough space? It did say that I'll have 10GB left if I do this partition.
 
Comment

TiggrToo

macrumors 68040
Aug 24, 2017
3,179
6,962
Out there...way out there
Could this be because I don't have enough space? It did say that I'll have 10GB left if I do this partition.

10GB for all of MacOS?

Dunno if it's the cause of the error but 10GB isn't really enough for the rest of your Mac to run on...

How big's your disk in total and how much you giving to BootCamp?
 
Comment

levmc

macrumors 6502a
Original poster
Jan 18, 2019
576
21
1TB, 86 gb to Windows. (That's the lowest it goes)
However I actually have 156 GB left out of 1TB, so I'm not sure why it says there will be only 10GB left after I give 86 gb to Windows. If I change 86 to 96, it says there will be 0gb left for Mac.
 
Comment

DeltaMac

macrumors G4
Jul 30, 2003
11,062
3,106
Delaware
Are you saying that you only have less than 100 GB of free space on your 1TB?
And formatting boot camp for 86GB then leaves you with less than 10GB? That's a hazardously low free space. You should remove at least 100GB data/files before you can safely proceed to make a boot camp partition for near 100GB.
 
Comment

levmc

macrumors 6502a
Original poster
Jan 18, 2019
576
21
No I don't have less than 100 GB, according to the bottom of my Finder. I have 156 GB. So I don't know why it says it will leave with 10 GB, because it should be 70 GB of leftover space.
 
Comment

DeltaMac

macrumors G4
Jul 30, 2003
11,062
3,106
Delaware
I'm pretty sure that means your drive is too full to add a partition.

Make more space. Going by your figures, I suggest that you remove enough to make the Windows partition in the size that you think you may need. Seems that the system is counting some space that appears to be free, but is not, such as space that might be reserved for files that are actually stored in your iCloud drive. The system reserves that space, because iCloud files are listed in the directory, but not actually stored locally. That's my take on how that works.
So, thinking that might be the situation, add the amount that you want to use for Windows to that free space, then remove that amount of data/files that will give back that space. Just a little math shows that (for an 86GB boot camp partition) you should remove (copy to another drive, then erase/delete from your boot drive, so the space is released) about 76 GB to have enough free space on the Mac partition. I would probably add 25% to that, and remove a total of 95 GB (round that up to 100 GB). That looks almost like the amount that I used in post #5. Still sounds good to me, but --- does that make sense to you?
 
Last edited:
Comment

Deadeyeshark

macrumors regular
Aug 1, 2011
220
91
England
Is says "An error occurred while partitioning the disk. Please run Disk Utility to check and fix the error."

And it still says that even after I ran disk utility.
Hi, I had this problem, my issue was I was using Time Machine and I needed to delete the snapshots which are saved locally.

First go into your time machine and turn it off, I also deselected the disc.

open terminal, copy and paste in the following command...

tmutil thinlocalsnapshots / 9999999999999999

press enter to run the command line

shut down you mac

reboot

bootcamp worked fine for me after that..

Deleting local snapshots will also free up some space. Also dont forget to reenable Time Machine once you have Windows installed
 
Comment

furbzv1

macrumors 65816
Sep 17, 2014
1,327
915
im also having the same issue, have tried first aid multiple times, turned off time machine, used tmutil command as mentioned above and still get the same error. I wonder if this is just something to do with me running Big Sur Beta. I've spent a few hrs on this already that im getting to the point of just buying Parallels and calling it a day.
 
  • Like
Reactions: Deadeyeshark
Comment

Deadeyeshark

macrumors regular
Aug 1, 2011
220
91
England
im also having the same issue, have tried first aid multiple times, turned off time machine, used tmutil command as mentioned above and still get the same error. I wonder if this is just something to do with me running Big Sur Beta. I've spent a few hrs on this already that im getting to the point of just buying Parallels and calling it a day.
I’d imagine the beta isn’t 100% stable and may be giving you issues in that respect. The reason I installed boot camp was to move away from Parallels on one of my iMacs, a 2013 i7 maxed out. The performance was slow, and crashed every so often, which might be ok for some but it ended up costing lost work hours, the disk check after a crashed session can take upwards of 2 hours. Conversely I have a maxed out 2017 iMac i7which runs parallels just fine, but their forums are full of people with the same issue I have with the 2013 iMac, seems to be luck of the draw.
 
  • Like
Reactions: furbzv1
Comment

levmc

macrumors 6502a
Original poster
Jan 18, 2019
576
21
I freed up more space and tried again but I get the same error.
I tried at 240gb of free space, and then 340gb of free space, but I still get an error.
 
Comment
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.