I bought a 128 gb sd card for my s8+. I took the old one out of my phone, put it in my computer and made a copy to a new folder on the computer I created. I did a quick format on the new memory card and then just copy and pasted the old card info onto the new card. I keep getting a drop down menu option to transfer the files. And if I go into my gallery the pictures are gray with an exclamation point. I tried to do a long format of the card and then everything just went bad on that bigger card. I then got another 128 memory card. First one was a Samsung, second one is a Sandisk. The second time some of the pictures are transferring but seemingly not all and I get that drop down menu again to "transfer the files". When I go into the file on my computer everything seems fine, nothing looks corrupted. am I doing a step wrong when transferring the info to the computer and then onto the new card?
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