Solved! acer chromebook not reading sandisk imagemate 64gb microsdcard

[sdcardmaster]

my Acer Chromebook is not reading a Sandisk image mate 64GB micro sd card that was read before.

 

[rgd1101]

it is not ready any sd card or just this one?
test the sd card on other device?

 

[sdcardmaster]

it is not ready any sd card or just this one?
test the sd card on other device?

Just this one.
I don't have another device

 

[rgd1101]

if the chromebook read any other sd card.
this sandisk failed