How to Convert external Hard Drive from FAT 32 to NTFS

I purchased an

external hard drive and it was formatted to FAT 32. I would like to covert it to NTFS. I have searched the data base and found that the following command can be used.

convert (volume) /FS:NTFS
volume = drive letter

System Info
Window Sever 2000
C: is 68G hard drive
F: is 250G external hard drive

I typed from the C: prompt

C:\>convert F: /FS:NTFS