I want to partition the card so I can use it for an OS install disk (Mac OS Extended GUID) in one partition and as a camera disk (MS-DOS FAT) in the other partition.

A good way to separate your data is to partition your Mac hard drive. A partition splits your storage into two spaces, like putting a trunk divider in your car. The most common use case is to install ...

If you have to use a flash drive on both Macs and Windows PCs, make sure both systems can read it. Here's how to format the drive correctly. While there is a lot of interoperability between Apple's ...