convert /fs:ntfs said, 'disk is already NTFS' or something like that.same disk - readable in MacOS 10.14 - i.e.disk (500GB Windows 8 boot drive from neighbor's Dell Optiplex system) showed up as 'raw' in Windows 10 Disk Management.My scenario, in short, was that while the disk wasn't bootable, and Disk Management on another system would show it as 'raw', chkdsk detected it as ntfs and repaired it: It is not suitable for less experienced users who have limited knowledge of computers.Just in case this helps someone else in a slightly different scenario, chkdsk /F worked for me to make an unreadable 'raw' partition a readable 'NTFS' one, without loss of data. The application has no graphical interface. The application helps you recover lost partitions. For the best results of this application, it is best to just simply follow TestDisk's onscreen instructions so that you cannot go wrong. However, it is important to note that TestDisk can actually wipe out all the data from a partition if you allow it. The data you enter is saved as a text file so that you can easily search for the specific file when you need to recover the partition. If you have ever been in a situation where you have lost an important document online or your pictures have been deleted from your computer without your permission, you know how important an application like this can actually be. Aside from this, it also enables you to rebuild the boot sector. TestDisk is an exceptional app that provides an ideal way for you to recover lost partitions and fix partition tables. However, this is a rather complicated application and it is recommended for users that are fairly knowledgeable about computers. TestDisk can ultimately be a lifesaver if you store a lot of important files on your computer. This is a powerful tool that can help you recover files that may have accidentally been deleted. You can also recover files from a variety of file systems. The nice thing about TestDisk is that you can recover deleted partitions and you can also fix partition tables. The main purpose of this application is to ultimately help you recover lost partitions. The difference in this application and other similar applications is that TestDisk has no graphical interface. TestDisk is an application that is a repairing tool for disk partitions.

Testdisk restore partition