Can you partition a drive without erasing data?

Hi! I have a 500GB external hard drive but I want to split it into 2 partitions. I'll use 1 for my actual backup while the other one for my Time Machine backups in Mac OSX. The problem is I already have 143GB worth of data stored into it. I can't load...

I own a 2 TB external Hard Drive that is formated in NTFS Microsofts File Format, I would like to partition the drive so that one half (1TB) remains in the NTFS format and the other half is in FAT32 format with out erasing any of the 200 GB of data already...

I own a SEAGATE 250 GB EXTERNAL DRIVE USB 2.0 http://www.amazon.co.uk/gp/product/B000E… The drive originally came formatted in FAT32 (With 232.4 GB available storage) I have previously partitioned this external drive into two sections. One partition...

if you delete a partition on a hard drive, will the data in that partition be lost or moved to another partition?

My Computer has just 40 GB HDD with 30-10 GB Partition. I recently bought a 1 TB Buffalo External Drive and without thinking formatted it to NTFS. Then I copied a lot of stuffs in it (about 70 GB), I would like to know is it possible to now partition...

I want to partition my hard drive into 2 (or more, I want to be able to change it later) sections but I don't want to lose any data. I have to format my harddrive anyway because I need to re-install windows, the thing is I don't have anything to put...

I just brought a new hp laptop and when I turn it on it only has one drive(C:). Will you lose your data when you partition C drive using Vista partition management???

Windows XP hardly offers any partitioning asssitance, besides giving a gigantic C partition. Can we partition the HDD after loading it with data, with assistance of software like 'partition magic' etc.