Macbook Pro HD/SSD Dock mount drives as read/write
Natively, Mac OS X cannot write to NTFS formatted volumes.  There are downloads like NTFS-3G which can enable you to read/write to NTFS partitions, but I've had mixed success with them.

If you want to format the drive so you can perform read/write operations and want to boot from it, please follow this link.  The format you want drives in is HFS+ (Mac OS X Extended Journaled).