converting hard drive from HFS+ to NTFS?

XP will not recognise the partition as something that it can work with, so delete the partition and create a new NTFS partition in its place in drive management. Any data on the partition will be lost.

To partition and format the external hard drive with Disk Management, follow these steps:

Access Disk Management in Windows XP or Vista. From the Start Menu, Left click on the Start button, Right-click on My Computer or Computer, left-click on Manage, and then left-click on Disk Management.

In the lower window pane, you will see a list of available IDE devices. Locate the desired hard drive to partition and format. You should see a black bar indicating unallocated space for the drive.

Important: If there is no black bar shown (if the bar is blue), the hard drive currently has a partition. Please verify that there is no important data on the hard drive before continuing with the directions below. Right-click on the blue bar and choose the option to Delete Partition. The bar should then turn black indicating unallocated space.

Right-click on the black bar (unallocated space) to see a menu of available options. Select New Partition or New Simple Volume from the menu of available options.

The Welcome to the New Partition Wizard or New Simple Volume Wizard appears. Windows Vista users, please proceed to step #6. For Windows XP users, Left-click on Next to continue and select Primary. Left-click on Next.

Select the size of the partition you wish to create and left-click on Next.

At the next screen, select a drive letter to assign to the partition and left-click on Next.

The Format Partition screen appears. On this screen you can select the file system, allocation unit size, and volume label you wish to create on the drive.

Note: In almost all cases, it is best to leave the allocation unit size at default. If you are not dual-booting and do not need to use this drive on a Windows 98 SE or Windows ME computer, it is also recommended that you use NTFS as the file system (you can also select FAT16 or FAT32). Dynamic partitions cannot be created on an external hard drive. The Windows 2000 and Windows XP Disk Management utility cannot support the format of a FAT32 partition larger than 32GB. Please refer to Microsoft Knowledge Base Article 184006 for additional information.

Left -click on Next to verify the process and the choices you selected.

Left-click on Finish to complete the process.

use youe XP cd or use a formatting program from the drive manufacturer. if you hook the device up as slave you should be able to do it thru Windows itself.. I prefer a program such as Boot and Nuke there are a lot of different programs to accomplish this.