Bootcamp - "The bless tool was unable to set the current boot disk" ?

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Bootcamp - "The bless tool was unable to set the current boot disk" ?

Today when I tried switching to my Windows 10 Bootcamp drive I got the error "The bless tool was unable to set the current boot disk."

Nothings changed except I did notice an MacOS update message last night but just clicked it away so not sure what was updated.

If I try and boot into windows using startup the bootcamp drive doesn't appear. If I start the bootcamp assistant the only option I get is to erase the bootcamp drive.

Any ideas? Any way to manually bless?

Thanks.

MacBook Pro 15”, macOS 10.15

Posted on May 27, 2020 8:36 PM

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Answer 1

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solomani Author

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145 points

May 27, 2020 9:51 PM in response to Loner T

2019 - I "fixed" the problem by wiping the reinstalling a bootcamp backup. So problem, I guess, was specific to the windows partition not macOS being fussy. Thanks for the quick reply!

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