SanDisk® Global Customer Support (Europe)

If your memory card or USB drive is showing the file system is RAW this means the partition is corrupt or missing. In order to format the card/USB drive you will first need to create a new partition.  

To create a new partition or logical drive on a basic disk:

Open the computer managment console and on the left side select disk management

1. In the Disk Management window, complete one of the following procedures, and then continue:
    - To create a new partition, right-click unallocated or RAW space on the basic disk where you want to create the partition, and then click New Partition (Win XP) or New Simple Volume (Win Vista, 7 and 8).
2. In the New Partition Wizard click Next
3. For the partition or volume size use the default settings which will create a single partition on the card/USB drive. Click Next
4. Assign a drive letter for the card/USB drive. (make sure to select a drive letter not currently being used by another drive)
5. Choose the file system in which you would like to format the card/USB drive. We would recommend FAT32 or exFAT. Click Next
6. Click Finish to complete partitioning and formatting the drive

Note: If format fails contact SanDisk support for possible warranty replacement.