had same problem
My MBP after upgrading to Lion would not read 8Gb sandisk usb drive. My macbook with snow leopard was fine. I waited for a few minutes and it appears to work okay now. I have to agree with some that it was indexing and it took a while to get done. Solved my issue.
My MBP after upgrading to Lion would not read 8Gb sandisk usb drive. My macbook with snow leopard was fine. I waited for a few minutes and it appears to work okay now. I have to agree with some that it was indexing and it took a while to get done. Solved my issue.