"This Mac does not support Bootcamp" and "The Bless Tool was unable to set the boot..

[SharkRaptor]

So, I had a previous error that wouldn't allow me to upgrade the firmware on my computer, and now I have this error.

Whenever I try to switch to my Windows 7 portion of my computer via bootcamp, it says "You can’t change the startup disk to the selected disk. The bless tool was unable to set the current boot disk."

I have verified my harddrives, and restarted many times, and still it doesn't work. Whenever I run the bootcamp assistant, it responds with "This Mac Does not Support Bootcamp".

This is all of a sudden after I install a new Graphics card, and upgrade my firmware. If it helps, this is my previous thread that got everything working on the mac-side of things -- https://forums.macrumors.com/threads/1862507/.

I need my computer to be working by Monday, so I will be working on this problem all day today (Sunday).

Please help, and thank you!

 

[MacVidCards]

So, I had a previous error that wouldn't allow me to upgrade the firmware on my computer, and now I have this error.

Whenever I try to switch to my Windows 7 portion of my computer via bootcamp, it says "You can’t change the startup disk to the selected disk. The bless tool was unable to set the current boot disk."

I have verified my harddrives, and restarted many times, and still it doesn't work. Whenever I run the bootcamp assistant, it responds with "This Mac Does not Support Bootcamp".

This is all of a sudden after I install a new Graphics card, and upgrade my firmware. If it helps, this is my previous thread that got everything working on the mac-side of things -- https://forums.macrumors.com/threads/1862507/.

I need my computer to be working by Monday, so I will be working on this problem all day today (Sunday).

Please help, and thank you!

you want help?

How about some details?

 

[SharkRaptor]

you want help?

How about some details?

Pretty much all the details are inside of what I wrote.

Bootcamp does not start up, it says both the things I stated above.

"You can’t change the startup disk to the selected disk. The bless tool was unable to set the current boot disk".

and

"Whenever I run the bootcamp assistant, it responds with "This Mac Does not Support Bootcamp".

Also, as stated above as well, this all started occurring after I upgraded my firmware (As linked above).

I have since downgraded my firmware back to what it was when bootcamp worked, and reset my harddrives to a previous backup, but I still get the same error.

 

[IowaLynn]

Short version, I never use BCA, just leave one drive in to be dedicated to Windowns and use your installer media. Format and install from there.

Or use a VM.

 

[AidenShaw]

Short version, I never use BCA, just leave one drive in to be dedicated to Windowns and use your installer media. Format and install from there.Sometimes I wonder if Apple intentionally makes sure that BootCamp causes problems for people who need to use Windows...

I multi-boot a half dozen or more Linux distros and Windows versions (and ESXi) - and "it just works".

No drama. No Apples.

Or use a VM.

Almost always the best solution, unless the OS vendor places artificial restrictions on how you can use a VM.