

when the hardware is physically damaged (there is hardly anything you can do to save your data).when your PC is infected by viral applications.very often, users connect their external hard disks to televisions which then format the disk into their own format which the PC cannot read and sees it as RAW file system (to read such disk you should better use special utilities that can read the file system that the television has created).

in case of incorrect work with applications that modify hard disk partitions, format them and so on.talking about an external hard disk, it often happens to such devices when their USB cable becomes disconnected when some data is being copied (what we recommend: always, before disconnecting the cable, click on a tray icon (next to the clock) to remove the disk safely).A power cut while the PC is working (for example, when there is a power failure, and when the electricity is back again, you turn on the computer and it reboots then you see that your disk has become RAW-type and you are offered to format it).This may happen for a number of reasons but most often they are like this: RAW file system means that the disk is not formatted and there is no file system assigned to it. Reasons why your file system appears to be RAW The best thing would be to turn off your PC (if it occurred to an external hard disk – disconnect it from your PC or laptop). First of all, you shouldn’t panic, hurry or agree to Windows suggestions (unless you know 100% what certain operations do).
