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Old Dec 27, 2012, 07:05 AM   #1
TuonoV
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Join Date: Dec 2012
Changed Bootcamp partition size - can't mount in Mac

Hi,
I've got a strange problem that I was hoping you'd be able to help me with. I've had a good search of google and these forums and a couple of people seemed to have this problem but I couldn't find any ways to fix it!

I have got a macbook pro running Mountain Lion. I created an 80gb bootcamp partition, which I then needed to increase.

I shrank the Mac partition. I had to use the disk utility in Terminal as on the GUI version 'Resize image' was greyed out.

I then booted back into windows and used a bit of software to extend the windows partition with the free space.

Everything is now working fine - if I use the Option key when booting, I can boot into either OS and they work just fine.
In the Windows side, I can use the bootcamp control panel to select Mac OS as a default OS to boot into.

But in the Mac side, the Bootcamp partition is no longer mounting, so therefore I cannot see this as an option in the startup disk settings.
It is also showing in Disk Utility as an 80gb disk with the wrong name as opposed to a 140gb disk named BOOTCAMP.
Verify disk in says that it needs to be repaired, but I'm guessing that if I do that it will kill my windows partition, and I'd rather not reinstall if I can avoid it.

Any chance that anybody knows what might fix this? I am guessing that by using a windows utility to increase the partition size there is a setting on the Mac which now doesn't match up to the size and the start and end points of the windows partition.
If anybody knows a way that I can fix this without reinstalling, I'd be very grateful, else if there is no other way to fix it than to reinstall, I'll just carry on booting by using the option key for the time being.

Thanks in advance!


This is an output from diskutil list

/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *750.2 GB disk0
1: EFI 209.7 MB disk0s1
2: Apple_HFS Macintosh HD 600.0 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3
4: Microsoft Basic Data 79.3 GB disk0s4


And this is a report from a partition viewer software:

*** Report for internal hard disk ***

Current GPT partition table:
# Start LBA End LBA Type
1 40 409639 EFI System (FAT)
2 409640 1172284679 Mac OS X HFS+
3 1172284680 1173554215 Mac OS X Boot
4 1310273536 1465147391 Basic Data

Current MBR partition table:
# A Start LBA End LBA Type
1 1 409639 ee EFI Protective
2 409640 1172284679 af Mac OS X HFS+
3 1172284680 1173554215 ab Mac OS X Boot
4 * 1173555200 1465147391 07 NTFS/HPFS

MBR contents:
Boot Code: Unknown, but bootable

Partition at LBA 40:
Boot Code: None (Non-system disk message)
File System: FAT32
Listed in GPT as partition 1, type EFI System (FAT)

Partition at LBA 409640:
Boot Code: None
File System: HFS Extended (HFS+)
Listed in GPT as partition 2, type Mac OS X HFS+
Listed in MBR as partition 2, type af Mac OS X HFS+

Partition at LBA 1172284680:
Boot Code: None
File System: HFS Extended (HFS+)
Listed in GPT as partition 3, type Mac OS X Boot
Listed in MBR as partition 3, type ab Mac OS X Boot

Partition at LBA 1310273536:
Boot Code: Windows BOOTMGR (Vista)
File System: NTFS
Listed in GPT as partition 4, type Basic Data

Partition at LBA 1173555200:
Boot Code: Windows BOOTMGR (Vista)
File System: NTFS
Listed in MBR as partition 4, type 07 NTFS/HPFS, active

Last edited by TuonoV; Jan 2, 2013 at 06:27 AM.
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