Macbook pro retina 15 Mid 2014 - Virtualization bug

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Level 1

9 points

Macbook pro retina 15 Mid 2014 - Virtualization bug

For some reason Virtualization is disabled when i boot directly up in Windows 8.1, however if i first start up OSX to the login screen and then select restart and boot into Windows i have Virtualization enabled as expected.

My temporary work-a-round which is terrible annoying:

bootup via ALT and select Ios
at login screen press restart
hold down ALT and select Windows

This enables virtualization, however it would be "nice" to be able to just boot directly into windows.

MacBook Pro (Retina, 15-inch, Mid 2014), Windows 8

Posted on Dec 12, 2014 12:47 AM

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Answer 1

Rudegar

Level 10

173,538 points

Dec 12, 2014 4:22 AM in response to JaisEdelmann

did a mac enable virtualization

got 1 virtualization support is disabled on your Mac

and 2 Intel-based Macs: Using VT-x virtualization technology - Apple Support

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Answer 2

JaisEdelmann Author

Level 1

9 points

Dec 12, 2014 4:32 AM in response to Rudegar

I do understand how to use a search engine including google, unfortunately it seems you have either not read my thread or what you link to as it contains absolutely no information regarding my issue.

Thanks for trying though

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Answer 3

Loner T

Level 9

59,513 points

Dec 12, 2014 5:58 AM in response to JaisEdelmann

There is a specific requirement to have Windows booted via the CSM-BIOS layer. All other means will fail. The only proper method is to

1. Switch from OSX to Windows using System Preferences -> Startup Disk.

2. Switch from Windows to OS using Control Panel -> System -> Boot Camp.

Please also see Boot Camp: Set the default operating system and Re: If I reboot to Windows directly from Windows (bootcamp options), I cannot launch a vm in Hyper-V.

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Answer 4

JaisEdelmann Author

Level 1

9 points

Dec 13, 2014 9:39 AM in response to Loner T

I'm sorry but this cannot be working as intended. If the CSM BIOS layer needs to boot up for Windows to work properly then this should happen pr. default and not only when you start OSX

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Answer 5

Loner T

Level 9

59,513 points

Dec 13, 2014 10:15 AM in response to JaisEdelmann

The CSM-BIOS is needed for Hyper-V, not for Windows itself. Using Alt key will also boot Windows but will bypass the CSM-BIOS layer. Windows has a pre-built device database so it does not really need CSM-BIOS, once it has been successfully installed.

When you switch from OSX to Windows, the --legacydrivehint tells the Apple Bootmanager to pass control to CSM-BIOS.

Is that what you are stating, or did I mis-undertsand your comment?

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Answer 6

JaisEdelmann Author

Level 1

9 points

Dec 13, 2014 11:54 AM in response to Loner T

My point is i dont want to start mac os in order to use my virtual machines in Windows. And if anything i should at least be able to configure that i want CSM-BIOS to start when choosing Windows as startup under alt via some configuration files?

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Answer 7

Loner T

Level 9

59,513 points

Dec 13, 2014 1:59 PM in response to JaisEdelmann

This is the configuration command for the Windows partition and the whole disk. Enter your password for teh following command when prompted.

sudo /usr/sbin/bless --device /dev/disk0s4 --setBoot --legacy --legacydrivehint /dev/disk0

Run diskutil list to find the exact partition disk0sN, where N is the exact slice for the Windows partition. System Preferences -> Startup Disk uses an additional --nextonly qualifier which is being omitted intentionally in the previous command.

Test with the Alt key and verify that it works the way you want it.

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Answer 8

JaisEdelmann Author

Level 1

9 points

Dec 14, 2014 1:57 AM in response to Loner T

Thanks for detailing abit more 🙂

Double checked partition and it was section 4 on disc 0, i've ran the above code several times, unfournantly Windows still boots with Virtualization as disabled, if i dont run OSX first

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Answer 9

Loner T

Level 9

59,513 points

Dec 14, 2014 3:09 AM in response to JaisEdelmann

Is your Windows installation an EFI Boot installation? The best check would be to see the output of

sudo fdisk /dev/disk0

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Answer 10

JaisEdelmann Author

Level 1

9 points

Dec 14, 2014 3:35 AM in response to Loner T

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 - 235480096] <Unknown ID>

3: AB 1023 254 63 - 1023 254 63 [ 235889736 - 1269536] Darwin Boot

*4: 07 1023 254 63 - 1023 254 63 [ 237160448 - 739944448] HPFS/QNX/AUX

-------------------

jaisedelmann$ 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 120.6 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 378.9 GB disk0s4

/dev/disk1

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD *120.2 GB disk1

Logical Volume on disk0s2

7B512A63-A92C-40A0-8B32-5D9BC16A4F16

Unencrypted

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Answer 11

Loner T

Level 9

59,513 points

Dec 14, 2014 3:41 AM in response to JaisEdelmann

This is a typical CSM-BIOS install. Can you check if there is a firmware update for your Mac?

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Answer 12

JaisEdelmann Author

Level 1

9 points

Dec 14, 2014 3:58 AM in response to Loner T

In the App store theres only a 'Pages' update i haven't installed otherwise everything up 2 date. There also dont seem to be any avaliable updates via EFI and SMC firmware updates for Intel-based Macs - Apple Support for Macbook Pro Mid 2014

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