Bootcamp Partition Will Not Mount - Size Bootcamp Partition Will Not Mount - Also Size Discrepancies

Your issue is that you used Disk Utility to resize/modify a disk containing a Boot Camp partition. You will have to erase and reformat the drive then reinstall OSx. Then you will have to go through the Boot Camp Assistant process to create a Boot Camp partition and reinstall Windows.

In the future, if you must resize a Boot Camp partition use CampTune not Disk Utility.

If you want to use Parallels instead of creating another Boot Camp partition just install Parallels after you erase and format the drive and reinstall OSx.

I don't understand what you are saying. No one said OSx is on the same partition. OSx and Boot Camp are on the same drive. By using the wrong tool, Disk Utility, you damaged your drive's configuration. You must do as I suggested.

After doing as I suggested, reinstall your applications and get your data from your backup.

Josh,

Can you post the output of following two commands from the MAC OS X side using Terminal?

sudo gpt -r -vv show disk3

sudo fdisk /dev/disk3

GPT and FDISK are available in OSX as shown below.

gpt is /usr/sbin/gpt

fdisk is /usr/sbin/fdisk

It sounds to me like the MBR on the disk containing Windows is correct, which is why it successfully boots Windows. But the GPT on that disk is wrong, which is why it isn't mountable by Tuxera NTFS nor usable by Parallels. So the solution is to fix the GPT on that disk. Before doing this, you should post the results from the read only commands mentioned by LonerT with a slight modification, refer to the raw disk using rdisk3 instead of disk3.

sudo fdisk /dev/rdisk3

sudo gpt -r -v show /dev/rdisk3

I'm assuming disk3 is the disk that contains Windows.

If the disk is less than 2TB, the alternative is to obliterate the GPT. This is actually in some sense preferable to hybrid MBRs. But before deleting information it's best to make sure we have the information backed up (to the forum) in case it's needed.

The MBR and GPT aren't in sync, in particular partition 3 mismatch. Based on the description of events and behavior, there's every reason to conclude the MBR is correct and the GPT is incorrect. You have several options in no particular order

1. Use gdisk's expert menu to zap the GPT only. So you remove the GPT, but you do NOT blank the MBR. Then OS X will use only the MBR since only it exists, and you'll see Boot Camp - Windows and so will Parallels. Strictly speaking you ought to use fdisk to remove the first partition, since its partition type id suggests it's a GPT disk. It probably doesn't hurt anything to not do this, but I haven't tested it.

2. Use gdisk to to delete partition 3, and then create a new partition 3 with the proper start and end sector values from fdisk. Note that fdisk and gdisk will have the same start sector value, however fdisk reports "size" whereas gdisk reports "last sector". So to get the proper value into gdisk, you need to add the start and size values from fdisk, and enter that as the last sector value when creating the new partition with gdisk. The type code for this partition needs to be 0700 when asked. This keeps the disk as primarily GPT, with a hybrid MBR.

Option 1 means any future changes to the partition layout will not require special tools since there's only one partition map. Option 2 means you'll likely have to make sure you use the correct tools, or make repairs, following any partition layout change.

Josh,

I will defer to Christopher on correcting the GPT, but I agree it is incorrect. On a much simpler, single disk Macmini with Bootcamp...

sudo gpt -r -vv show /dev/rdisk0

gpt show: /dev/rdisk0: mediasize=500107862016; sectorsize=512; blocks=976773168

gpt show: /dev/rdisk0: Suspicious MBR at sector 0

gpt show: /dev/rdisk0: Pri GPT at sector 1

gpt show: /dev/rdisk0: Sec GPT at sector 976773167

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 725093952 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

725503592 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

726773128 632

726773760 249999360 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

976773120 15

976773135 32 Sec GPT table

976773167 1 Sec GPT header

sudo fdisk /dev/rdisk0

Disk: /dev/rdisk0 geometry: 60801/255/63 [976773168 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: AF 1023 254 63 - 1023 254 63 [ 409640 - 725093952] HFS+

3: AB 1023 254 63 - 1023 254 63 [ 725503592 - 1269536] Darwin Boot

*4: 07 1023 254 63 - 1023 254 63 [ 726773760 - 249999360] HPFS/QNX/AUX

diskutil list /dev/disk0

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *500.1 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Macintosh HD 371.2 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 128.0 GB disk0s4

PS: I see Christopher's response.

Hi can anyone tell me if you can create 3 Partitions

1, OSX 10.9 Mac OS extended

2, Data Mac OS extended

3, Win 8 NTFS

and be able to see all 3 partitions from both Win8 and OSX

I can only get OSX to see all partitions

Win8 can see the OSX 10.9 but not the data partiton ecept for with the windows disk manager which shows the Data partition as unallocated ? I did try to format via windows and that broke all partitions needing a full rebulid

Thanks Phill

That configuration is not supported. Visible partitions, you can have OS X and Windows, that's it.

What_iPhone... you can always use a shared directory between OS x and Windows, or a second hard drive which can be connected via SATA/USB/FW and used.