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Totenkreuz Author

Level 1

0 points

Problem installing W10 on BCA 6 and El Capitan 10.11

Hi, I have problems installing W10 on my Mac.

Here's an overview of what happened:

OS X Yosemite, with W7 Bootcamp (everything is fine).

Updated to OSX El Capitan, Bootcamp no longer found (holding alt on boot doesn't show Bootcamp).

Used BCA to Remove Windows 7 or later version. (space allocated in HDD for Bootcamp is back to single partition).

Used BCA to Create a Windows 7 or later version install disk using Win10_English_x64.iso downloaded from Microsoft along with latest support drivers from Apple. Also checked Install Windows 7 and or later version.

After waiting a couple hours and the USB Bootcamp is finally ready, I set 70gb for the Bootcamp partition, eventually the Mac automatically reboots but never booted up to the Windows 10 bootcamp installation (The reboot is just like any normal reboot that reboots back to Mac).

Opened BCA and it now shows Remove Windows 7 and or later version.

Checked Disk Utility, and the partition for Bootcamp is there but most of it is unused.

What could be the problem here? I also noticed that my BCA is still showing Windows 7 while I've read somewhere that on El Capitan, Bootcamp no longer requires USB Drive, or atleast shows Windows 8. http://blog.twocanoes.com/post/130203487014/apple-boot-camp-no-longer-requires-u sb-flash-drive?utm_source=loopinsight.com&utm_medium=referral&utm_campaign=Feed% 3A+loopinsight%2FKqJb+(The+Loop)&utm_content=FeedBurner

Checked the Win10_English_x64.iso for MD5 and SHA1 and everything is fine.

OS X El Capitan 10.11

MBP Retina 15" Mid 2014

Thanks in advance!

Posted on Oct 6, 2015 1:44 AM

39 replies

Loner T

Level 9

59,471 points

Oct 8, 2015 9:27 AM in response to Totenkreuz

Looks good. You will have to Reboot and test. You will need to repeat these steps if you disconnect the USB and do these steps again.

Totenkreuz Author

Level 1

0 points

Oct 8, 2015 9:43 AM in response to Loner T

Nothing happens, it just boots back to OS X. Tried both reboot only and reboot with holding alt/option. Before rebooting I used the terminal and blessed the USB first. I think it has something to do with "NVRAM variable "boot-args" not set."

"No BootX creation requested"

"No boot.efi creation requested"

"IOMedia disk2s1 does not have a partition UUID"

But most of which I don't really have an understanding off.

Loner T

Level 9

59,471 points

Oct 8, 2015 9:52 AM in response to Totenkreuz

Use the --option and test. Can you rebuild the USB installer again, if necessary?

Totenkreuz Author

Level 1

0 points

Oct 8, 2015 7:15 PM in response to Loner T

sudo bless --option /Volumes/WININSTALL --file /Volumes/WININSTALL/bootmgr.efi --setBoot --verbose

EFI found at IODeviceTree:/efi

No volume specified

Am I doing it right? Did I got the --option command correctly?

Loner T

Level 9

59,471 points

Oct 8, 2015 7:59 PM in response to Totenkreuz

It should be

sudo bless --folder /Volumes/WININSTALL --file /Volumes/WININSTALL/bootmgr.efi --setBoot --verbose --options "boot-args="""-v disk0sN""""

N should point to your USB. If this still does not work, recreate your USB Installer using BCA with Download Software checked.

Totenkreuz Author

Level 1

0 points

Oct 8, 2015 8:46 PM in response to Loner T

sudo bless --folder /Volumes/WININSTALL --file /Volumes/WININSTALL/bootmgr.efi --setBoot --verbose --options "boot-args="""-v disk2s1""""

Password:

EFI found at IODeviceTree:/efi

Mount point for /Volumes/WININSTALL is /Volumes/WININSTALL

Common mount point of '/Volumes/WININSTALL' and '' is /Volumes/WININSTALL

No BootX creation requested

No boot.efi creation requested

found ioreg "FirmwareFeaturesMask"; featureMaskValue=0xE803FF37

found ioreg "FirmwareFeatures"; featureFlagsValue=0xE803F537

isPreBootEnvironmentUEFIWindowsBootCapable=1

given BSD is not a DVD disc medium

isDVDWithElToritoWithUEFIBootableOS=0

Checking if disk is complex (if it is associated with booter partitions)

Other partition scheme detected

No auxiliary booter partition required

Preferred system partition found: disk0s1

Returning booter information dictionary:

<CFBasicHash 0x7f97a2f09d70 [0x7fff75328890]>{type = mutable dict, count = 3,

entries =>

0 : <CFString 0x10eab7990 [0x7fff75328890]>{contents = "System Partitions"} = (

disk0s1

)

1 : <CFString 0x10eab8170 [0x7fff75328890]>{contents = "Data Partitions"} = (

disk2s1

)

2 : <CFString 0x10eab8190 [0x7fff75328890]>{contents = "Auxiliary Partitions"} = (

)

}

Path to mountpoint given: /Volumes/WININSTALL

IOMedia disk2s1 does not have a partition UUID

DADiskRef disk2s1 has Volume UUID 07D39EC5-BAE3-30ED-9A34-AECB16744F6A

IOMedia disk2s1 has path IODeviceTree:/PCI0@0/XHC1@14/@9:1

Setting EFI NVRAM:

efi-boot-device='<array><dict><key>IOMatch</key><dict><key>IOProviderClass</key ><string>IOMedia</string><key>IOPathMatch</key><string>IODeviceTree:/PCI0@0/XHC1 @14/@9:1</string></dict><key>BLVolumeUUID</key><string>07D39EC5-BAE3-30ED-9A34-A ECB16744F6A</string><key>BLLastBSDName</key><string>disk2s1</string></dict><dict ><key>IOEFIBootOption</key><string>boot-args=-v</string></dict></array>'

Setting EFI NVRAM:

IONVRAM-DELETE-PROPERTY='efi-boot-file'

Setting EFI NVRAM:

IONVRAM-DELETE-PROPERTY='efi-boot-mkext'

Setting EFI NVRAM:

IONVRAM-DELETE-PROPERTY='efi-boot-kernelcache'

NVRAM variable "boot-args" not set.

Trying BCA again and remaking the USB. Should I run the command again after remaking the USB?

Totenkreuz Author

Level 1

0 points

Oct 9, 2015 4:03 AM in response to Totenkreuz

Tried with another USB (Not generic, previous one is Generic), and this time everything is working fine! Thanks for all the help!

Totenkreuz Author

Level 1

0 points

Oct 9, 2015 4:04 AM in response to Applegeek17

Just a heads up! I am able to successfully boot into Windows 10 now using another USB drive (non-generic, 16gb). The old one is generic 8gb.

Loner T

Level 9

59,471 points

Oct 9, 2015 4:05 AM in response to Totenkreuz

Excellent. A lot of generic USBs do not support boot ability . I have used SanDisk Cruzer for a long time. Glad to see it working. Please ensure you create backup for future recovery.

Problem installing W10 on BCA 6 and El Capitan 10.11