I recently installed Ubuntu 15.10 alongside Win 10. Got a 1 TB hard disk. Allocated ~200 GB for Windows and left the rest as unallocated space and installed Ubuntu in it. Now that ~720 GB is not being accessed by Windows. I cannot run the partition operations in Windows.
The solution I'm thinking is to just shrink the Ubuntu partition to about 100 GB and created another partition from the remaining space in NTFS format so that it serves as a common partition.
Will my method work? Thanks.