Can't resize Macintosh HD partition

Question

Hello,I&#x27;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&#x27;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&#x27;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.

Loner T · Answer

1. You seem to have parts of the Microsoft EFI code still on your disk. Was W8.1 installed using EFI boot? Your disk layout indicates a Windows RE partition as well (disk0s6).2. Please post the output of the following commands...diskutil listdiskutil cs listsudo gpt -vv -r show /dev/disk0sudo fdisk /dev/disk0The "sudo" commands will prompt for your password, and it will not be echoed back. You may also see a warning about improper use of "sudo" and potential data loss due to "abuse" of the command.

Baumxyz · Answer

diskutil list/dev/disk0  #:                      TYPE NAME                    SIZE      IDENTIFIER  0:      GUID_partition_scheme                        *251.0 GB  disk0  1:                        EFI EFI                    209.7 MB  disk0s1  2:          Apple_CoreStorage                        169.4 GB  disk0s2  3:                Apple_Boot Recovery HD            650.0 MB  disk0s3/dev/disk1  #:                      TYPE NAME                    SIZE      IDENTIFIER  0:                  Apple_HFS Macintosh HD          *169.0 GB  disk1                                Logical Volume on disk0s2                                D4E3EEE0-B6FC-476D-A615-F02F4E10E368                                Unlocked Encrypteddiskutil cs listCoreStorage logical volume groups (1 found)|+-- Logical Volume Group DAC02A65-4027-4D05-B5D8-93295E7C7D34    &#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;    Name:        Macintosh HD    Status:      Online    Size:        169361367040 B (169.4 GB)    Free Space:  9134080 B (9.1 MB)    |    +-&lt; Physical Volume D97EBB1C-D684-4275-A5AC-6DC6AF360BA5    |  ----------------------------------------------------    |  Index:    0    |  Disk:    disk0s2    |  Status:  Online    |  Size:    169361367040 B (169.4 GB)    |    +-&gt; Logical Volume Family 11A8E6B3-3DA0-46DF-A0BD-40F5C76878AB        ----------------------------------------------------------        Encryption Status:      Unlocked        Encryption Type:        AES-XTS        Conversion Status:      Complete        Conversion Direction:    -none-        Has Encrypted Extents:  Yes        Fully Secure:            Yes        Passphrase Required:    Yes        |        +-&gt; Logical Volume D4E3EEE0-B6FC-476D-A615-F02F4E10E368            ---------------------------------------------------            Disk:                  disk1            Status:                Online            Size (Total):          168999911424 B (169.0 GB)            Conversion Progress:  -none-            Revertible:            Yes (unlock and decryption required)            LV Name:              Macintosh HD            Volume Name:          Macintosh HD            Content Hint:          Apple_HFSsudo gpt -vv -r show /dev/disk0gpt show: /dev/disk0: mediasize&#x3D;251000193024; sectorsize&#x3D;512; blocks&#x3D;490234752gpt show: /dev/disk0: PMBR at sector 0gpt show: /dev/disk0: Pri GPT at sector 1gpt show: /dev/disk0: Sec GPT at sector 490234751      start      size  index  contents          0          1        PMBR          1          1        Pri GPT header          2        32        Pri GPT table        34          6               40    409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B    409640  330783920      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC  331193560    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC  332463096  157771623         490234719        32        Sec GPT table  490234751          1        Sec GPT headersudo fdisk /dev/disk0Disk: /dev/disk0 geometry: 30515/255/63 [490234752 sectors]Signature: 0xAA55        Starting      Ending#: id  cyl  hd sec -  cyl  hd sec [    start -      size]------------------------------------------------------------------------1: EE 1023 254  63 - 1023 254  63 [        1 -  490234751] &lt;Unknown ID&gt;2: 00    0  0  0 -    0  0  0 [        0 -          0] unused     3: 00    0  0  0 -    0  0  0 [        0 -          0] unused     4: 00    0  0  0 -    0  0  0 [        0 -          0] unused

Loner T · Answer

You disk space is stuck in the Free Space after Recovery HD. Normally, BC Assistant moves Recovery HD to the end and then merges the space into OSX. This has to be manually done now. You will lose Recovery HD temporarily. Let me know if you want to proceed, and I can provide Terminal commands to do this. You will also need to disable FileVault2 temporarily.

Baumxyz · Answer

Is there no other way? And am I safe if I perform a backup via Time Machine before?

Loner T · Answer

In fact a backup is a must to keep your data safe. You have another option...1. Back up OSX using Time Machine - Mac Basics: Time Machine backs up your Mac - Apple Support.2. Boot into Internet Recovery - OS X: About OS X Recovery - Apple Support.3. Erase your internal drive and restore from the TM backup in Step 1 - OS X Yosemite: Recover your entire system.Please be aware that TM does not backup Bootcamp partitions.

Baumxyz · Answer

What option would you recommend? I think I feel better with the terminal commands. What do you think? I&#x27;ve backupped my system five minutes ago.

Loner T · Answer

The Terminal commands are quicker, but need to be executed carefully. The Backup/Restore is simpler, but takes much longer. We can proceed either way. You are the decision-maker. 😉

Baumxyz · Answer

Thanks for your support! I think the Terminal commands sounds better to my ears. :-)

Loner T · Answer

1. Turn off FileVault - OS X Yosemite: Turn off FileVault encryption .2. After it completes, check the output of diskutil cs list and ensure the following is still trueRevertible:            Yes (unlock and decryption required)3. If it is not Revertible, please post back.4. Revert your CS volume to JHFS+ file system - diskutil cs revert D4E3EEE0-B6FC-476D-A615-F02F4E10E3685. Merger Recovery HD with the JHFS+ file system - diskutil mergePartitions disk0s2 disk0s36. Run Disk Utility and drag the bottom right corner of the OS X partition to the maximum possible.7. Re-install OS X using Internet Recovery - OS X: About OS X Recovery - Apple Support . Be aware that Internet Recovery will provide the version of OS X that originally shipped with your Mac, which may be older than the current OS X version.8. Run Software Update from App Store to get the OS X version that you want. Update all Applications if necessary.9. Reboot in Safe Mode and then normally - OS X Yosemite: Start up in safe mode .10. Run BCA and try to install Windows.

Baumxyz · Answer

Oh, that sounds like I will lose apps and data on my MacBook. I don&#x27;t want to lose data.

Loner T · Answer

You do not lose data, but it is recommended that you have a backup. Re-installation of OSX only updates OS-specific files.

Baumxyz · Answer

Oh, okay - I do understand. I&#x27;ll try that and give you feedback as soon as I&#x27;m finished.

Loner T · Answer

If you see any errors or need help, please post back?

Baumxyz · Answer

I assume that I should do this in recovery mode? Okay, I disabled FileVault but if I type "diskutil cs list" into the Terminal, i get the following output: "No CoreStorage logical volume groups found".

Loner T · Answer

After disabling FV2, if you do not see a CS volume, does diskutil list show only JHFS+ for disk0s2? FV2 and Yosemite both use CS volumes. You can continue with Step 5, if you see only HFS for disk0s2.