"Card cannot be accessed. Reinsert/change the card or format card with camera" Error on my canon t3i.The sd card is a Sandisk Ultra PLUS 80MB/s 32 GB. When I plug it in my macbook it says "The disk you inserted was not readable by this computer." Then the options "Initalize, ignore and Eject". The sd card does not show up in devices, but I can see more info in disk utility verifying that there is 32,096,256 "Used Space" which would mean the card is full of data.
When I put in a windows PC, I get the message "You need to format the disk in Drive F: before you can use it." but reformating would be losing data. When I click cancel, it pops up a new message "F:| is not accessible. The file does not contain a recognized file system. Please make sure that all required file system drivers are loaded and that the volume is not corrupted." If I go to devices it shows up, but does not show the GB as usual in the bottom. I click properties and shoes 0 bytes for used and free space. I believe the disk is in RAW which I am unsure how because I was taking pictures and video on it recently.
I have tried command prompt and typing in "chkdsk F:/" which then again tells me "The type of the file system is RAW. CHKDSK is not available for RAW drives" and have tried other sd cards in both computer that work fine. Any help?
Software/Hardware used: Macbook 15' Mid2015 macOS Sierra, Windows PC 10, Canon t3i, Sandisk SD Card 32gb