NTFS Forward Compatibility
While the different NTFS versions have a certain degree of both forward and backward compatibility, there are certain issues when mounting newer NTFS volumes containing persistent shadow copies in older versions of Windows, prior to Windows Vista. This affects dual-booting, and external portable hard drives. Specifically, the shadow copies on an NTFS volume are deleted when the older operating system mounts that NTFS volume. This happens because the older operating system does not understand the newer format of persistent shadow copies.
Read more about this topic: Shadow Copy