Black screen on reboot after bootcamp

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Level 1

11 points

Black screen on reboot after bootcamp

I'm trying to install Win10 on a little partition of my Mac Mini. I used the boot camp assistant: it wrote windows and its drivers on the USB flash and then reboot. I see grey screen and after a while, turns to black. I've tried to start the installation manually by pressing option key on boot but with the same results.. Something changed when I started the EFI partition but when I choose the boot camp disk partition where install windows, after formatting, I see always error that EFI systems couldn't be installed on that type of disk. I've tried a command line I've seen in another discussion but nothing changed. I don't know

Later I'll write some specs of my Mac..

Posted on Mar 22, 2016 11:45 PM

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Answer 1

Supermene Author

Level 1

11 points

Mar 23, 2016 6:34 AM in response to Supermene

It's a mid 2011 mac mini, 2.3GHz i5

Samsung 40 inch led tv as monitor in HDMI output

Need help from Loner T

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Answer 2

Loner T

Level 9

59,536 points

Mar 23, 2016 10:00 AM in response to Supermene

A 2011 Mini will not properly support an EFI Boot. Is your USB an USB2 flash drive? Some brands of USB flash drives are not bootable and can cause issues.

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Answer 3

Supermene Author

Level 1

11 points

Mar 23, 2016 10:08 AM in response to Loner T

When booting the mac then pressing option key I have Macintosh HD, recovery 10.11.2, windows(from the USB) and EFI boot (from the USB).

The USB key is a Kingston 3.0 32gb.. Today I chatted with support and he said that the windows version was wrong, I was trying to install Win10. So I retryed with win 8.1 with same results.. I've read of somebody who solved using a thunderbolt monitor but I haven't this and I can't afford it..

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Answer 4

Loner T

Level 9

59,536 points

Mar 23, 2016 10:10 AM in response to Supermene

Are you manually choosing EFI Boot from the USB? Is BC Assistant creating the partition? Is it possible to switch to OSX and post the output of

diskutil list

diskutil cs list

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Answer 5

Supermene Author

Level 1

11 points

Mar 23, 2016 10:26 AM in response to Loner T

When I start the EFI boot it's manually. The partition of BC exists because when I boot EFI I see it in windows installer but after formation in NTFS windows says another error about EFI systems and GPT disks or partitions

the output of diskutil list is:

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *500.1 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Macintosh HD 399.2 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 100.0 GB disk0s4

/dev/disk1 (external, physical):

#: TYPE NAME SIZE IDENTIFIER

0: FDisk_partition_scheme *31.5 GB disk1

1: DOS_FAT_32 WININSTALL 31.5 GB disk1s1

and of diskutil cs list is:

No CoreStorage logical volume groups found

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Answer 6

Loner T

Level 9

59,536 points

Mar 23, 2016 10:27 AM in response to Supermene

Can you choose Windows instead of EFI Boot? Your specific Mac does not support EFI Boot properly.

Please post the output of

sudo fdisk /dev/disk0

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Answer 7

Supermene Author

Level 1

11 points

Mar 23, 2016 10:28 AM in response to Loner T

I could choose Windows but when I choose it she screen goes black and nothing happens..

Disk: /dev/disk0 geometry: 60801/255/63 [976773168 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: AF 1023 254 63 - 1023 254 63 [ 409640 - 779781456] HFS+

3: AB 1023 254 63 - 1023 254 63 [ 780191096 - 1269536] Darwin Boot

4: 0B 1023 254 63 - 1023 254 63 [ 781461504 - 195311616] Win95 FAT-32

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Answer 8

Loner T

Level 9

59,536 points

Mar 23, 2016 10:31 AM in response to Supermene

This is setup correctly. Do you have another USB2 flash drive with 8+ GB that you can use to create a Windows Installer? Please do not use EFI Boot.

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Answer 9

Supermene Author

Level 1

11 points

Mar 23, 2016 10:34 AM in response to Loner T

I will search in whole house for another usb2 and I'll let you know the result

I have a 500gb HD external but I can't do a partition of it and I don't want to format it all. In Disk Utility the option partitions isn't usable

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Answer 10

Loner T

Level 9

59,536 points

Mar 23, 2016 10:55 AM in response to Supermene

I do not recommend a USB external HD for WININSTALL. It causes problems.

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Answer 11

Supermene Author

Level 1

11 points

Mar 23, 2016 5:51 PM in response to Loner T

Well, I just tried with another USB and now when reboot, I see like in the photo..

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Answer 12

Loner T

Level 9

59,536 points

Mar 23, 2016 6:04 PM in response to Supermene

Can you reboot your Mac, disconnect all external storage, run SMC and NVRAM reset, connect the USB, power up and hold Alt/Option key and choose Windows icon from the USB. If that does not work, please post a Finder screen shot of the USB.

Please be aware that W10 is not officially supported on 2011 models.

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