MacOS – Why I can not see mac partition under windows installed with bootcamp

bootcampmacospartitionwindows

I installed a windows 7 on macbook using bootcamp. Everything looks fine, but one thing.
Here is stated that "Apple’s Boot Camp driver package automatically installs an HFS+ driver for Windows, which allows Windows to see your Mac partition. This partition shows up as “Macintosh HD” under Computer on your Windows system."
But I don't see this partition.
I tried to download and install bootcamp drivers manually taking them from apple page, but this didn't help. I tried to download HFS+ drivers, but when I install them the system sais that they are installed already.

Why I don't see the partition? Has apple changed this for yosemite?

Aditional info:

Model: MacBook Air (13-inch, Early 2014)

[22:57:27]~$ sudo diskutil list
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *500.3 GB   disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:          Apple_CoreStorage                         459.4 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3
   4:       Microsoft Basic Data BOOTCAMP                40.0 GB    disk0s4
/dev/disk1
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                  Apple_HFS Macintosh HD           *459.1 GB   disk1
                                 Logical Volume on disk0s2
                                 4BB22737-5EFB-49D6-ADF1-5B719538AF45
                                 Unencrypted
[22:57:28]~$ sudo diskutil cs list
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group 7B2EDA4F-F3FF-4884-9253-D2170790ABD6
    =========================================================
    Name:         Macintosh HD
    Status:       Online
    Size:         459418034176 B (459.4 GB)
    Free Space:   0 B (0 B)
    |
    +-< Physical Volume C16CF9A0-A81C-4ED2-A6D4-CA4DF48AA0C6
    |   ----------------------------------------------------
    |   Index:    0
    |   Disk:     disk0s2
    |   Status:   Online
    |   Size:     459418034176 B (459.4 GB)
    |
    +-> Logical Volume Family A05D294B-CCF6-4B21-9C91-B3E99E8B9D33
        ----------------------------------------------------------
        Encryption Status:       Unlocked
        Encryption Type:         None
        Conversion Status:       NoConversion
        Conversion Direction:    -none-
        Has Encrypted Extents:   No
        Fully Secure:            No
        Passphrase Required:     No
        |
        +-> Logical Volume 4BB22737-5EFB-49D6-ADF1-5B719538AF45
            ---------------------------------------------------
            Disk:                  disk1
            Status:                Online
            Size (Total):          459082489856 B (459.1 GB)
            Conversion Progress:   -none-
            Revertible:            Yes (no decryption required)
            LV Name:               Macintosh HD
            Volume Name:           Macintosh HD
            Content Hint:          Apple_HFS
[22:57:28]~$ sudo gpt -r show /dev/disk0
gpt show: /dev/disk0: Suspicious MBR at sector 0
      start       size  index  contents
          0          1         MBR
          1          1         Pri GPT header
          2         32         Pri GPT table
         34          6         
         40     409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
     409640  897300848      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
  897710488    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
  898980024       1864         
  898981888   78123008      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
  977104896        131         
  977105027         32         Sec GPT table
  977105059          1         Sec GPT header
[22:57:28]~$ sudo gpt -r show -l /dev/disk0
gpt show: /dev/disk0: Suspicious MBR at sector 0
      start       size  index  contents
          0          1         MBR
          1          1         Pri GPT header
          2         32         Pri GPT table
         34          6         
         40     409600      1  GPT part - "EFI System Partition"
     409640  897300848      2  GPT part - "Customer"
  897710488    1269536      3  GPT part - "Recovery HD"
  898980024       1864         
  898981888   78123008      4  GPT part - "BOOTCAMP"
  977104896        131         
  977105027         32         Sec GPT table
  977105059          1         Sec GPT header
[22:57:28]~$ sudo fdisk /dev/disk0
Disk: /dev/disk0    geometry: 60821/255/63 [977105060 sectors]
Signature: 0xAA55
         Starting       Ending
 #: id  cyl  hd sec -  cyl  hd sec [     start -       size]
------------------------------------------------------------------------
 1: EE 1023 254  63 - 1023 254  63 [         1 -     409639] <Unknown ID>
 2: AC 1023 254  63 - 1023 254  63 [    409640 -  897300848] <Unknown ID>
 3: AB 1023 254  63 - 1023 254  63 [ 897710488 -    1269536] Darwin Boot 
*4: 07 1023 254  63 - 1023 254  63 [ 898981888 -   78123008] HPFS/QNX/AUX

Best Answer

I need some more information before I can answer your question. First, what model is your mac?

Second, please run the following commands from the OS X Terminal app. Please post the results for me to read.

sudo diskutil list
sudo disktuil cs list
sudo gpt -r -vvv show -l /dev/disk0
sudo fdisk /dev/disk0

All these commands do is list information about your disk. They do not change anything. The commands may ask for your login password. This is normal.

I am trying to determine if you are using coreStorage. If not, then the problem might be the age of you computer. The drivers for windows 7 may not be compatible with OS X 10.10.

See this Apple Support Communities post: windows 8 does not recognise Macintosh HD, No drive Letter.

Just a note about the article you reference:

The article is full of problems and errors. While it is true the default partition names are "Macintosh HD" and "BOOTCAMP", often users change these volume names. The author should have known this. Also, if you follow the instructions in the section titled "Create a Shared FAT32 Partition", your computer will not be able to boot to windows. The reason for this is simple: Windows can only see the first 4 partitions on your disk. The first partition is the EFI partition. It is normally hidden when viewed in the Disk Utility. The second partition is the HFS+ OS X boot partition. The third is the recovery partition which is hidden also. The Fourth is used as the Windows Bootcamp partition. If you try to insert a FAT32 partition, the Bootcamp partition would become the fifth partitioned, thus preventing windows from booting.

Update:

Well, you are using Core Storage which is probably the problem. Windows does not recognize partitions using Core Storage. My understanding is that Yosemite converted your OS X partition from HFS+ to Core Storage. You need to change it back to HFS+. klanomath at Can't make more than two partitions seems to have the answer. Here he has solved a different problem, but his solution steps should work for your problem as well. I would follow his steps with some minor changes. I have listed them below.

For his step 1, I would just use the recovery partition already on your disk. In other words, press the alt key while booting and select the recovery partition to boot to.

For his step 3, the command would be:

diskutil cs revert 4BB22737-5EFB-49D6-ADF1-5B719538AF45

Omit step 5.

Also, I would use the Disk Utility to backup the partition before entering the above command. This would require an external disk to store the image on, which you may not have. If you wish to do this and do not know how, let me know.

Let me know how things turn out and don't forget to give klanomath some reps.

dave

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MacOS – Can’t modify partitions

Thanks @Tetsujin. The listing looked a little screwy so I was a little hesitant to go mucking around with the command-line diskutil. But I ended up doing a

diskutil corestorage list

and then

diskutil corestorage delete [UUID of 50GB Logical Volume Group]

GUI Disk Utility correctly saw the 50 GB of empty space as part of the other Logical Volume Group and I was able to delete it and merge it back in fine.

I think I messed up the Fusion Drive on the 1TB iMac (with BootCamp)

Theoretically everything is fine with your Fusion Drive. Fusion Drives look like this. Disk0 is your SSD with 121 GB and disk1 is your HDD with ~1 TB (~1.121 TB summed up).

The larger parts of your SSD (disk0s2) and your HDD (disk1s2) are pooled to a CoreStorage LVG (Fusion Drive: disk3) with a size of 967.8 GB. The rest is reserved for EFIs, a Recovery HD (alltogether ~1.3 GB) and your old Windows partition - now probably free space (~152 GB).

The logical volume 'Macintosh HD' (967.8 GB) spans disk0s2 and disk1s2. This is the first 'Macintosh HD' in picture 1. The volume 'Macintosh HD' - it's the one visible on the desktop - should ideally also have about 967.8 GB. This is the second 'Macintosh HD' in picture 1.
In fact it has only 852.67 GB (see picture 3).

In the second picture the logical volume 'Macintosh HD' is the first listed in black, the volume 'Macintosh HD' is the second listed in black, the other two 'Macintosh HD's listed in grey are the parts of your SSD and HDD dedicated to the logical volume 'Macintosh HD'.

In my opinion something went wrong after deleting various partitions with the Bootcamp Assistant/Disk Utility or in Windows.

Preparation:

Detach any external drive (especially your external Time Machine backup drive)
Restart to Internet Recovery Mode by pressing alt cmd R at startup.
The prerequisites are the latest firmware update installed, either ethernet or WLAN (WPA/WPA2) and a router with DHCP activated.
On a 50 Mbps-line it takes about 4 min (presenting a small animated globe) to boot into a recovery netboot image which usually is loaded from an apple/akamai server.

I recommend ethernet because it's more reliable. If you are restricted to WIFI and the boot process fails, just restart your Mac until you succeed booting.

Alternatively you may start from a bootable installer thumb drive (preferably Mavericks or Yosemite) or a thumb drive containing a full system (preferably Mavericks or Yosemite).

Now you may either repair CoreStorage or rebuild your Fusion Drive:

'Repair CoreStorage' (not recommended):

First i would try to check the volume 'Macintosh HD' with Disk Utility. If the volume is corrupted consider a reinstall of Mac OS X.
If the volume is ok quit Disk Utility
Open Terminal and enter diskutil unmountDisk /dev/LVIdentifier and both diskutil unmountDisk /dev/DiskContainingApple_CoreStorageIdentifier
In your case: first diskutil unmountDisk /dev/disk3 then diskutil unmountDisk /dev/disk0 and diskutil unmountDisk /dev/disk1
remove the EFI NO NAME partition with gpt remove -i IndexNumberOfEFINoName DiskIdentifier:
gpt remove -i 4 disk1
Remount the CoreStorage disks and then the Logical Volume:
In your case: first diskutil mountDisk /dev/disk0 and diskutil mountDisk /dev/disk1 and then diskutil mount /dev/disk3.

enter gpt -r -vvv show /dev/diskIdentfierOfApple_CoreStorage to get infos of your HDD CoreStorage disk.
In your case: gpt -r -vvv show /dev/disk1
It should look like this:

-bash-3.2# gpt -r -vvv show /dev/disk1
gpt show: /dev/disk1: mediasize=1000204886016; sectorsize=512;         blocks=1953525168
gpt show: /dev/disk1: PMBR at sector 0
gpt show: /dev/disk1: Pri GPT at sector 1
gpt show: /dev/disk1: GPT partition: type=C12A7328-F81F-11D2-BA4B-00A0C93EC93B, start=40, size=409600
gpt show: /dev/disk1: GPT partition: type=53746F72-6167-11AA-AA11-00306543ECAC, start=409640, size=1671210848
gpt show: /dev/disk1: GPT partition: type=426F6F74-0000-11AA-AA11-00306543ECAC, start=1671620488, size=1269760
gpt show: /dev/disk1: Sec GPT at sector 1953525167                               
     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    1671210848      2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
1671620488       1269760      3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
1672890248     280634887
1953525135            32        Sec GPT table
1953525167             1        Sec GPT header

The free space on your HDD has 280634887 blocks. Please calculate the biggest block number dividable through 8. That's 280634880 blocks (á 512 bytes) which equals 143685058560 B or ~143.7 GB. Add the size of your HDD CoreStorage Physical Volume (852666400768 B) The result is 143685058560 B + 852666400768 B = 996351459328 B
Resize your HDD CoreStorage physical volume with diskutil cs resizeDisk HDDPVUUID newsize
In your case: diskutil cs resizeDisk 93892BE8-2B7F-4ABD-A4C3-984495DCD98D 996351459328b
Calculate the maximal size of your CoreStorage Logical Volume in diskutil cs list: (size disk0s2) + (size disk1s2) In your case that's 120988852224 B + 996351459328 B = 1117340311552 B. That should be the size of your refreshed Logical Volume Group.
Resize your Logical Volume with diskutil cs resizeVolume LVUUID LVGSize-128 MB In your case that's diskutil cs resizeVolume D237FFDC-7DA4-41D7-AC13-4CC7E5E8C0A0 1117212311552b. If you get an error (There is not enough free space...) choose a smaller size like 1117148311552b.
Quit Terminal and open Disk Utility.
Check your expanded CoreStorage Volume for errors.
Quit Disk Utility, choose your CS volume as startup disk and restart your Mac

'Rebuild Fusion Drive' (recommended if you have a Time Machine backup)

Booted to Internet Recovery Mode open Utilities → Terminal in the menubar and enter:
diskutil cs list to get the CoreStorage listing.
Copy the Logical Volume UUID, it's the fifth listed.
Now delete the Logical Volume with diskutil cs deleteVolume LVUUID.
In your case: diskutil cs deleteVolume D237FFDC-7DA4-41D7-AC13-4CC7E5E8C0A0.
Copy the Logical Volume Group UUID, it's the first listed in the listing of diskutil cs list.
Then delete the Logical Volume Group with diskutil cs delete LVGUUID.
In your case: diskutil cs delete 1EFE58BC-3613-44C4-86EE-D816F3B66E3E
Enter exit and quit 'Terminal'
Open 'Disk Utility'. Enter 'Ignore' if you are asked to fix the drives.
Choose your SSD and partition it: 1 Partition Mac OS X Extended (Journaled), hit the Options button and choose GUID Partiton table and hit OK and Apply.
Please check that the size is ~121 GB

Example:
Choose your HDD and partition it: 1 Partition Mac OS X Extended (Journaled), hit the Options button and choose GUID Partiton table and hit OK and Apply.
Please check that the size is ~1 TB

Example:
Quit Disk Utility and open Terminal
Enter diskutil list

Example (your disk identifiers and sizes are different of course: Your volume SSD probably has the Identifier disk0s2 and the size 121 GB and your volume HDD probably has the Identifier disk1s2 and the size 1.0 TB):
Enter diskutil cs create "Name" IdentifierSSD IdentifierHDD
In your case probably diskutil cs create "Macintosh HD" disk0s2 disk1s2.

Copy the resulting LVGUUID

Example:
Enter diskutil cs CreateVolume LVGUUID jhfs+ "Macintosh HD" 100%.

Example:
Enter diskutil cs list
Check the size of your Logical Volume. It should have the size ~1.121 TB

Example:
Quit Terminal
Open 'Disk Utility' and check your newly created volume for errors
Quit 'Disk Utility'
Attach your external Time Machine backup drive or check this answer if you use NAS or another network share.
Open 'Restore from Time Machine Backup'
Choose the appropriate Time Machine backup and restore your system
Reboot to your restored system.
Unmount and detach your Time Machine backup drive
Open 'Terminal' and enter 'diskutil list'
Check if your 'Recovery HD' is listed.
If your 'Recovery HD' is missing, usually reinstalling your current system with the latest available system installer (e.g. 'Install OS X Mavericks (10.9.5)' if Mavericks is currently installed) will recreate it without loosing any data. AFAIK Recovery Partition Creator 3.8 will NOT create a Recovery HD on CoreStorage volumes.
After reinstalling the system with the latest available system installer open App Store and install the latest security fixes.

Best Answer

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MacOS – Can’t modify partitions

I think I messed up the Fusion Drive on the 1TB iMac (with BootCamp)

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