Bootcamp partitioning error in macOS 10.13

Excellent. Can you post the output of diskutil list?

Please start a new discussion to avoid confusion, and post the output of

diskutil list

diskutil apfs list

diskutil cs list

on the new discussion.

I have exactly the same issue on my MBA 128 SSD model. Gets this far then same message. I have 48gb free and am trying to allow 34gn for Windows 10. Have downloaded the anniversary rather than creator as directed by Microsoft. But can’t get last partition stage. Help!!

also running lastest Mac OS

Hi.

I Got apple support to help me and it worked. It is a LOCAL Time Machine "snapshot" issue. Even if TM is off and you disconnect the external drive...High Sierra saves "snapshots" to the local drive.

Here is the solution:

we’ll going to turn off Time Machine briefly and then after we finish Bootcamp setup we can turn the automatic backups back on. Though of course first question, do you have Time Machine setup?

colin benson

time machine is an external volume and is not connected.

Tiffany

Correct, but if you have it on at all, we need to delete the local Time Machine snapshots that may be saved which allows Boot Camp to partition the disk. These are the described more here. About Time Machine local snapshots

colin benson

time machine is neither connected nor on. i looked at what u sent me. how do i do that?

Tiffany

OK! Before moving further have you ever had it on, if so we will still have those snap shots. So we can go to Terminal, which is in the Utilities folder of your Applications folder then we’ll do the command to delete those.

Tiffany

Ahh I do see you had backups in the past so we definitely want to do this step.

colin benson

yes..last backup was yesterday evening.

colin benson

ok...i'm in terminal

Tiffany

Copy and paste the following command into Terminal, hitting enter after like usual:

tmutil thinlocalsnapshots / 9999999999999999

colin benson

done

Tiffany

Awesome! Now we should be good to go on that end so let’s go ahead and try to run Boot Camp again.

IT WORKS!

Your restore addresses multiple issues - file system corruption and the local snapshot occupying unnecessary disk space.

This indicates that the Apple BC Engineering and High Sierra Engineering do not regression test enough scenarios before launching products. Craig Federighi's organization needs to do better. The lack of automated switching between the OSes in HS is a big miss as well.

Hi,

I'm having the same problem, can you help me out please? I don't understand computer codes a lot, though. i'm running macOS 10.13.1 . I tried using the command tmutil thinlocalsnapshots / 9999999999999999 mentioned in one of the replies and then tried running bootcamp but got the same error again.

Thanks in advance! 🙂

Hello,

I have exactly same issue in High Sierra 10.13.2

I've already tryed all mentioned here as well as in other threads but problem still persist.

Is there any other way how to fix it unless reformatting/restoring whole system from scratch (which is something I don't want to do).

Disk Utility and cmd version are saying that on disk there is everything OK, TM is disabled and local snapshots thinned. I do have 1TB SSD, MacbookPro 13 with 16gb. Plenty of space.

Thanks for advice.

P.

Thank you! This worked for me. I really didn’t want to have to do a full erase and install.

This is a pretty disappointing bug tbh. Apple just doesn’t care as much about their desktop OS as they used to, and it shows.

Switched off fire vault and I also typed tmutil thinlocalsnapshots / 9999999999999999 in the terminal

Still that bootcamp assistant won't let me create that bootcamp partition 😠

Any ideas?

I have tried that too, but it did not help. Looks like they did sometging wrong with High Sierra.

Thank this was help