Windows 7 does not boot after upgrading to Sierra 10.12

[Gargars]

Hey, I have just upgraded my MacBook Pro (early 2011) to Sierra 10.12. However, after upgrade, Windows 7 does not boot, the screen is black with white blinking cursor.

I have waited for 15 min and nothing happened. The Bootcamp partition seems to be okay, I can access the files from macOS.

Does anybody know what could be the isssue here?

I got confused after reading a thread saying Sierra does not support Windows 7 and apple support page, which states that:
Mac computers using macOS Sierra 10.12 support new installations of Windows 10, Windows 8.1, and Windows 7 only.

Thanks in advance,
Mantas

 

[Gargars]

Update: I forgot to mention that I upgraded directly from Yosemite.
This is the screenshot with Bootcamp partition info from disk utility:

It says its not bootable, I guess it shouldn't be this way?

Is unmounting and mounting Bootcamp save?

Also, I have Tuxera NTFS installed. However, disabling it doesn't help.

 

[darkus]

Ouch. I'm in the same boat as you and just saw this thread while my OSX Sierra upgrade is downloading. I paused that right quick!

Did it end up working out for you?

 

[Gargars]

Ouch. I'm in the same boat as you and just saw this thread while my OSX Sierra upgrade is downloading. I paused that right quick!

Did it end up working out for you?

Hey, I didn't find any easy solution to this, so I formatted the windows partition and reinstalled it, now it works while having sierra I don't know if it's possible to install windows 7 using bootcamp on sierra, so I used this guide. Basicaly, you just create partition for windows using the disk utility, download the drivers form apple website (which also can be done using the bootcamp assistant) and boot windows dvd by holding option key during restart.

Good luck,
Mantas