[ETL]

...forgot to mention, when I attempted the reformat on the tablet, there were no options for specific formats. Only format. I assume this means the card was formatted to work on the tablet. Perhaps that is a format that will work with both a PC and MacBook? But since it doesn’t indicate which format it is, I won”t know until I try it again in my friend’s MacBook. Again, is there a way to check what format the card currently is in?

[ThunderSleeps]

Well, when your Samsung (Android OS based) tablet formatted the card it probably had a couple of choices. If we're lucky, it picked FAT32 (file allocation table, 32 bit). That's the most common/universal format that can store reasonably large files, be read by Android/Linux/Windows/Mac... However, if we're unlucky, being Android/Linux based the tablet decided "eff it, this is my SD card, I'll use ext3 or ext4" which are Linux file system formats. They may be readable, with some heroics, on Windows/Mac but...

Your best bet would be to format the card on a regular computer, Mac/Windows/Linux where they give you choices. On Windows, from file explorer, you can generally right-click on the SD drive icon and select "Properties" from the pop up menu and it should tell you what format it is. If it can't read it at all, then you'll need to format it. That should be another option on the menu.