Boot Camp Error Partitioning

I've tried every solution I've googled to this error message "Your disk could not be partitioned. An error occurred while partitioning the disk. Please run First Aid from within Disk Utility to check and fix the error."


1) I've run first aid, which told me "First Aid found corruption that needs to be repaired. To repair the startup volume, run first aid from recovery." I ran first aid from recovery, it found no problems...proceeded to reboot my computer normally...and boot camp encounters the same error and disk utility still says there is a corruption that needs to be repaired. Again..from recovery first aid finds no errors.


2) I've reboot the computer in single user mode and tried /sbin/fsck -fy, where again it found no errors. Rebooted my computer and boot camp still gives the same error.


3) Tried fsck_apfs -o, again no errors found. Rebooted my computer and boot camp still gives the same error.


4) Removed all time machine local snapshots using terminal and temporarily disabled backups. Rebooted my computer and boot camp still gives the same error.


I feel like this error is common and already resolved (given by the huge number of google hits)...I'm sorry but I can't seem to figure this issue out on my own. Thanks for your help.


MacBook Pro 13″, macOS 10.14

Posted on Aug 26, 2020 12:14 AM

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Posted on Aug 26, 2020 6:08 PM

Thank you for your help, I went into single user mode and reran fsck_apfs -o with /dev/rdisk1. When I ran it earlier I used a different directory, I don't remember what it was. But I fixed the overallocation error, and bootcamp is running fine.


Thanks Loner T!

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6 replies

Aug 26, 2020 5:52 PM in response to Loner T

dev_init:607: Using /private/var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/fsck_apfs.1875.1/apfs and /private/var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/fsck_apfs.1875.1/nx for device-io.

** Checking the container superblock.

** Checking the EFI jumpstart record.

** Checking the space manager.

** Checking the space manager free queue trees.

** Checking the object map.

** Checking volume.

** Checking the APFS volume superblock.

** The volume Macintosh HD was formatted by diskmanagementd (945.250.134) and last modified by apfs_kext (945.275.9).

** Checking the object map.

** Checking the snapshot metadata tree.

** Checking the snapshot metadata.

** Checking the extent ref tree.

** Checking the fsroot tree.

** Checking volume.

** Checking the APFS volume superblock.

** The volume Preboot was formatted by newfs_apfs (748.30.60) and last modified by apfs_kext (945.275.9).

** Checking the object map.

** Checking the snapshot metadata tree.

** Checking the snapshot metadata.

** Checking the extent ref tree.

** Checking the fsroot tree.

** Checking volume.

** Checking the APFS volume superblock.

** The volume Recovery was formatted by newfs_apfs (748.30.60) and last modified by apfs_kext (945.275.9).

** Checking the object map.

** Checking the snapshot metadata tree.

** Checking the snapshot metadata.

** Checking the extent ref tree.

** Checking the fsroot tree.

** Checking volume.

** Checking the APFS volume superblock.

** The volume VM was formatted by newfs_apfs (748.57.19) and last modified by apfs_kext (945.275.9).

** Checking the object map.

** Checking the snapshot metadata tree.

** Checking the snapshot metadata.

** Checking the extent ref tree.

** Checking the fsroot tree.

** Verifying allocated space.

warning: Overallocation Detected on Main device: (22741295+1) bitmap address (20111)

** The volume /dev/rdisk1 appears to be OK.

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Boot Camp Error Partitioning

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