So you can use a USB-Stick with both a Mac and a Windows Computer, you will need to reformat so that both systems can read and write. What you need to, you can find here.
USB-Stick under Mac OS X format
Because Windows can't read native Mac Partition Format, you need to format your USB Stick on a Mac compatible with Windows. And so it goes:
- Connect the USB Stick to your Mac.
- Go into your program folder in the subfolder utilities.
- Open the "disk utility". Here you can see all the connected drives, even the USB-Stick.
- Select the USB drive you want to format. Make sure that it is really the right thing to do, because when you Format, all data on the Stick will be deleted.
- Click the Partition button.
- In the drop-down menu under "volume scheme" to select the desired number of partitions, so the virtual drives on your USB-Stick. In the normal case, the Partition should be sufficient.
- Click on the "options" button and select in the dialog window, the partition scheme "Master Boot record". This is the Schema that can read both Windows computers as well as Macs, and describe. Click "OK".
- In the area of "volume information" you can enter a name for your USB Stick.
- In the drop-down menu under "Format" select "MS-DOS file system (FAT)". This is the only file system both OS X and Windows compatible.
- Click on "Apply" and confirm the safety query with a click on "Partitioning". Now you just have to wait until the USB Stick is formatted.
USB flash drive with Windows format
Because a Mac can read any Windows Partition Format, but not every writing can, you need to choose, even if you format your USB Stick on a Windows computer, the correct file system:
- Connect the USB Stick to your Windows machine and then close the window for the "Automatic playback".
- Click in the start menu, click "Computer". Here you will find the USB Stick in the "devices with removable storage".
- Click with the right mouse button on the USB Stick and select in the context menu to Format the item"...".
- Select in the formatting window as a file system to "FAT 32" so that is also a Mac on the Medium can access.
- Under "volume label" type a name for your USB Stick.
- If necessary, activate the check mark for "quick format". So s is indeed faster, but not so thoroughly.
- Click on "Start" and confirm the security query with "OK".
With years of hard work by the way, exactly the same way.