Once the partition becomes RAW, you probably will see RAW as file system or 0 used space in Disk Management, will be asked to format the disk before you can use it, or will get error messages saying your drive is inaccessible. If Windows operating system cannot recognize the file system of a partition, it won't allow any users to access the stored files on the partition. It often represents that your disk or partition has some logical or physical problems and can't work properly on the operating system. Conclusion What is RAW partition?Ī RAW partition means a partition with unknown or unrecognized file system. How to use DiskPart to fix RAW partition without losing data? 4.