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Level 1

15 points

Can't resize Macintosh HD partition

Hello,

I've installed Windows 8.1 via the BCA on my MacBook Pro and upgraded it to Windows 10. Now I wanted to perform a clean installation of Windows 10 via the BCA afterwards to get rid of the Windows 8.1 overload.

My first problem was that BCA did not recognize my Windows installation anymore (because of the upgrade). So I started in recovery mode to delete the three partition which belongs to Boot Camp (disk0s4, BOOTCAMP and disk0s6). There are still two problems:

1. My Macintosh HD only has 169 GB but I have a total space of 250 GB. I'm not able to resize my Macintosh HD partition (even in recovery mode).

2. If I hold ALT while booting, I still see Windows as a boot option. But I don't have any Windows partitions left on the system.

What should I do now? I want to remove Windows as a boot option and get back the full 250 GB for my Macintosh HD partition.

Thanks in advance!

PS: If I type diskutil cs list in Terminal I only get one CoreStorage logical volume group named Macintosh HD.

MacBook Pro with Retina display, OS X Yosemite (10.10.5), MBP Retina 2015 13" 250GB

Posted on Aug 27, 2015 6:10 AM

54 replies

Loner T

Level 9

59,471 points

Sep 1, 2015 1:06 PM in response to Baumxyz

What happens if you click on EFI Boot?

Baumxyz Author

Level 1

15 points

Sep 1, 2015 1:34 PM in response to Loner T

Nothing happens - the screen gets black and stays black. I need to turn off the MacBook holding the power button for 5 secs.

Loner T

Level 9

59,471 points

Sep 1, 2015 1:52 PM in response to Baumxyz

What are the files still remaining in the EFI partition?

Baumxyz Author

Level 1

15 points

Sep 1, 2015 2:19 PM in response to Loner T

total 54

-rwxrwxrwx 1 staff 26426 1 Sep 02:03 BOOTLOG

-rwxrwxrwx 1 staff 512 26 Aug 21:07 BOOTSECT.BAK

drwxrwxrwx 1 staff 512 1 Sep 12:10 EFI

/Volumes/EFI/EFI:

total 2

drwxrwxrwx 1 staff 512 26 Aug 22:46 APPLE

drwxrwxrwx 1 staff 512 26 Aug 15:39 Boot

/Volumes/EFI/EFI/APPLE:

total 4

drwxrwxrwx 1 staff 512 11 Apr 19:43 CACHES

drwxrwxrwx 1 staff 512 12 Mär 23:44 EXTENSIONS

drwxrwxrwx 1 staff 512 26 Aug 22:46 FIRMWARE

drwxrwxrwx 1 staff 512 26 Aug 22:46 UPDATERS

/Volumes/EFI/EFI/APPLE/CACHES:

total 2

drwxrwxrwx 1 staff 1024 11 Apr 19:43 CAFEBEEF

/Volumes/EFI/EFI/APPLE/CACHES/CAFEBEEF:

/Volumes/EFI/EFI/APPLE/EXTENSIONS:

total 30722

-rwxrwxrwx 1 staff 15729264 1 Sep 21:27 Firmware.scap

/Volumes/EFI/EFI/APPLE/FIRMWARE:

total 16384

-rwxrwxrwx 1 staff 8388608 26 Aug 22:46 MBP121_0167_B07_LOCKED.fd

/Volumes/EFI/EFI/APPLE/UPDATERS:

total 2

drwxrwxrwx 1 staff 1024 26 Aug 22:46 SMC

/Volumes/EFI/EFI/APPLE/UPDATERS/SMC:

total 1422

-rwxrwxrwx 1 staff 38424 26 Aug 22:46 Mac-E43C1C25D4880AD6.epm

-rwxrwxrwx 1 staff 410794 26 Aug 22:46 Mac-E43C1C25D4880AD6.smc

-rwxrwxrwx 1 staff 201984 26 Aug 22:46 SmcFlasher.efi

-rwxrwxrwx 1 staff 37835 26 Aug 22:46 flasher_base.smc

-rwxrwxrwx 1 staff 37835 26 Aug 22:46 flasher_update.smc

/Volumes/EFI/EFI/Boot:

total 2257

-rwxrwxrwx 1 staff 1155424 10 Jul 12:30 bootx64.efi

Loner T

Level 9

59,471 points

Sep 1, 2015 2:26 PM in response to Baumxyz

On my Mac...

./EFI:

total 1

drwxrwxrwx 1 MyName staff 512 Jul 24 2014 APPLE

./EFI/APPLE:

total 4

drwxrwxrwx 1 MyName staff 512 Jun 30 16:08 CACHES

drwxrwxrwx 1 MyName staff 512 Jan 10 2014 EXTENSIONS

drwxrwxrwx 1 MyName staff 512 Jun 30 16:08 FIRMWARE

drwxrwxrwx 1 MyName staff 512 Jul 24 2014 UPDATERS

./EFI/APPLE/CACHES:

./EFI/APPLE/EXTENSIONS:

total 30722

-rwxrwxrwx 1 MyName staff 15729264 Sep 1 11:22 Firmware.scap

./EFI/APPLE/FIRMWARE:

total 16642

-rwxrwxrwx 1 MyName staff 8520304 Jun 30 16:08 MBP112_0138_B15_LOCKED.scap

./EFI/APPLE/UPDATERS:

total 2

drwxrwxrwx 1 MyName staff 1024 Jul 24 2014 SMC

./EFI/APPLE/UPDATERS/SMC:

total 1347

-rwxrwxrwx 1 MyName staff 33621 Jul 24 2014 Mac-2BD1B31983FE1663.epm

-rwxrwxrwx 1 MyName staff 377748 Jul 24 2014 Mac-2BD1B31983FE1663.smc

-rwxrwxrwx 1 MyName staff 202016 Jul 24 2014 SmcFlasher.efi

-rwxrwxrwx 1 MyName staff 37836 Jul 24 2014 flasher_base.smc

-rwxrwxrwx 1 MyName staff 37836 Jul 24 2014 flasher_update.smc

Can you delete the following and test? Please also remove the Boot directory.

/Volumes/EFI/EFI/Boot:

total 2257

-rwxrwxrwx 1 staff 1155424 10 Jul 12:30 bootx64.efi

Baumxyz Author

Level 1

15 points

Sep 1, 2015 3:12 PM in response to Loner T

Yeah... Finally "Macintosh HD" is the only boot option on bootup. Thank you so much for your patience and your support! One last question: Is there anything left I need to do? Or am I now able to clean install Windows 10 via BCA from an USB device? Thanks so much!!