> MBR and GPT are partitioning systems. MBR can be used on any disk up > to 2TB but not more. > > GPT can be used on any size of drive but must be used on drives bigger > than > 2TB.
Close, but not quite accurate. MBR can be used on any disk which contains up to 2^32 (4G) *sectors*, not necessarily 2T *Bytes*. It is true that most disks use 512 Bytes/sector (which equates to 2 TB), but not all do. E.g., optical media (CD/DVD/BD) use 2k Bytes/sector), and large modern hard disks use 4k Bytes/sector. Oftentimes there is firmware in the 4k hard disks to virtualize/emulate 512 bytes (they usually call this 512e). We can have a much lengthier discussion about the practical implications of all this (and there are plenty of them), but the point is that 4G sectors does not *necessarily* equate to 2T Bytes. _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
