I need to transfer large file from my mac to PC all the time. I would like to know if i change my external drive to ntfs format can i still read/write on the external drive on mac and will it remove the 4gb limit?
thank you very much
Reformatting is possible via Windows, and it will delete all data on it, thus make sure to back the HDD up before formatting it.
And the following should help you understand NTFS and other file systems, but maybe have a look at exFAT.
Overview of the four major file systems (called "Formats" in Mac OS X) used on Windows and Mac OS X, compiled by GGJstudios. You can use Disk Utility to format any HDD to your liking.
FAT32 (File Allocation Table)
Read/Write FAT32 from both native Windows and native Mac OS X.
Maximum file size: 4GB.
Maximum volume size: 2TB
NTFS (Windows NT File System)
Read/Write NTFS from native Windows.
Read only NTFS from native Mac OS X [*]To Read/Write/Format NTFS from Mac OS X: Install NTFS-3G for Mac OS X (free)
Some have reported problems using Tuxera (approx 33USD).
Native NTFS support can be enabled in Snow Leopard, but is not advisable, due to instability.
AirPort Extreme (802.11n) and Time Capsule do not support NTFS
Maximum file size: 16 TB
Maximum volume size: 256TB
HFS+ (Hierarchical File System, a.k.a. Mac OS Extended)