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Level 1

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Issue getting Windows 8.1 on MBP Mid 2010

Hi,

This question is aimed at you Loner T.

I followed the instruction in one of your previous post to manually partition and instal Windows 8.1 on my Mid 2010 MBP.

Previous posts "How to get Windows 8.1 on Mid 2010 MBP?"

I have downloaded GDisk and attempted to create hybrid MBR in line with your previous set of instruction however my MBR has less partitions then in the previous post and I am concerned that may be affecting the behaviour.

I'm hopeful this terminal output will be a good starting point.

MacBook-Pro:~ BenDunlop$ sudo gpt -vv -r show /dev/disk0

Password:

gpt show: /dev/disk0: mediasize=250059350016; sectorsize=512; blocks=488397168

gpt show: /dev/disk0: Suspicious MBR at sector 0

gpt show: /dev/disk0: Pri GPT at sector 1

gpt show: /dev/disk0: Sec GPT at sector 488397167

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 194756592 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

195166232 264168

195430400 292966400 3 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

488396800 335

488397135 32 Sec GPT table

488397167 1 Sec GPT header

Thank you for your help.

Cheers

MacBook Pro, OS X Yosemite (10.10.4)

Posted on Jul 4, 2015 5:20 PM

57 replies

Loner T

Level 9

59,471 points

Jul 7, 2015 4:21 PM in response to dunlop.03

Power down the Mac. Run the SMC Reset and NVRAM reset and power cycle and try the C key with the DVD. You are most likely missing a driver.

dunlop.03 Author

Level 1

0 points

Jul 7, 2015 4:27 PM in response to Loner T

I will run the SMC reset and NVRAM reset now.

Having just logged back into OSX I notice that the partition which I had created for Windows to go on, which was named 'Windows' has somehow been renamed 'Untitled'. Not sure if that id of consequence but don't want to miss any important info.

Thanks again for all your help.

Loner T

Level 9

59,471 points

Jul 7, 2015 4:31 PM in response to dunlop.03

If it was formatted to NTFS, it should be fine.

dunlop.03 Author

Level 1

0 points

Jul 7, 2015 4:42 PM in response to Loner T

I have completed both the SMC reset and the NVRAM reset. I am not sure how to verify the SMC reset but the NVRAM did the double chime so I assume it worked.

Should I do anything else or should I attempt to install from the ISO Disk again?

dunlop.03 Author

Level 1

0 points

Jul 7, 2015 5:52 PM in response to dunlop.03

I tried to install Windows again. It booted the DVD fine but this time it can't find any drives to install to?

Loner T

Level 9

59,471 points

Jul 7, 2015 5:54 PM in response to dunlop.03

On OS X side, run Disk Utility, and click on the BC partition? Is it FAT or something else?

You can also erase the volume using

diskutil eraseVolume fat32 BOOTCAMP disk0s4

Make sure disk0s4 is the correct disk, if you do this. Also, your MBR shows the designated partition as bootable, which is not correct.

dunlop.03 Author

Level 1

0 points

Jul 7, 2015 5:58 PM in response to Loner T

It is a Windows NT File System (NTFS) now, named untitled. It was created as a FAT partition called 'Windows' but that has changed.

I assume that the 'erase' you gave is for terminal. Can I just erase the partition in disk utility, and create a new FAT partition for Windows? Also if I do erase and make a new partition, do I need to do anything with the GPT?

Loner T

Level 9

59,471 points

Jul 7, 2015 6:18 PM in response to dunlop.03

Did the Installer prompt you format the disk to NTFS? If you repartition, the MBR needs a rebuild, too.

dunlop.03 Author

Level 1

0 points

Jul 7, 2015 6:21 PM in response to Loner T

When I first got through the installer before the 'WHEA' error it reformatted the FAT 'windows' partition to NTFS. Now that partition is not available, nor are any others, in the installer.

Should I delete the current partition and start again with a MBR rebuild?