I messed up Disk Partition using Disk Utility and now Bootcamp failed to boot!!!

Question

Level 1

4 points

I messed up Disk Partition using Disk Utility and now Bootcamp failed to boot!!!

I wanted to create new partition to store some datas as my bootcamp partition ran out of space. As I have plenty of available storage in my mac partition, I thought I can take some storage and reuse in other partition. I took 50GB from Mac partition & formatted it to MS-DOS using disk utility. I tried to reboot back to windows then I found out now bootcamp failed to load. mac still loads & works fine. Please help me.. 😟

Last login: Thu Jun 9 10:33:04 on ttys000

Yiques-iMac:~ yique$ sudo fdisk -e /dev/disk0

Password:

fdisk: could not open MBR file /usr/standalone/i386/boot0: No such file or directory

Enter 'help' for information

fdisk: 1>

iMac, OS X Mavericks (10.9.5), Windows 7 Ultimate

Posted on Jun 8, 2016 7:59 PM

Reply

Answer 1

theratter

Level 4

3,961 points

Jun 8, 2016 8:05 PM in response to yique

Afraid you did not read the instructions before proceeding. You will need to repartition the drive back to one single volume for OS X. Then use Boot Camp Assistant in the Utilities folder to create the Windows partition. Boot Camp does not install Windows for you. You must have your own legal copy of Windows that you purchased.

Reply

Answer 2

yique Author

Level 1

4 points

Jun 8, 2016 8:13 PM in response to theratter

I do have windows 7 already loaded in my bootcamp partition but now failed to load. Is there a way where I can make bootcamp loads again without having to reinstall it?

here's screenshot of the partition

Reply

Answer 3

theratter

Level 4

3,961 points

Jun 8, 2016 8:27 PM in response to yique

You will have to boot from the Windows installer in order to try repairing the Windows system or erasing it and reinstalling it. Note that you now have a segment of unallocated space on the drive that cannot be made into a third partition. I have no idea if this was intentional or simply a mistake in what you started out to do. You may want to read the links I provided carefully before deciding what next to do. I would recommend using Boot Camp Assistant to remove the current Boot Camp partition. Restore the entire disk to one OS X partition/volume. Use BCA to create a new Windows partition then reinstall Windows.

Reply

Answer 4

yique Author

Level 1

4 points

Jun 8, 2016 8:50 PM in response to theratter

The unallocated space was originally part of mac partition. I shrank 50gb from mac partition and created new partition. The formatted to MS-DOS with disk utility. After I found out it had caused bootcamp not to load, i erased the newly created partition. 😢

I read in this forum that this can be repaired without having to reinstall fresh copy of windows but I have no idea where and how to start.

Reply