Scott Hanselman's blog, at ComputerZen.com, is one of my favorites. He seems to always have the best answers to the worst problems.
Recently I had purchased a Western Digital MyBook 500GB External Hard Drive. (I managed to find them at a local Sam's Club for only $120, which was a steal at the time.)
I installed and setup the external hard drive and collected at least 200GB worth of data on it before I noticed something. "This hard drive came formatted as FAT32, which doesn't support files larger than 4 gigs."
This was a problem for me for two reasons. I wanted to use the external hard drive for both Virtual PC images and PC backup images, both of which can be larger than 4 gigs.
I knew I could copy off all my data and then format the drive as NTFS, but this meant finding over 200GB of free space on my network, which I could do but would be a hassle to do and the undo again.
Fortunately for me I remembered an article I had read on Scott's blog: "The Duh Files - The file is too large for the destination file system".
C:\Users\CJCraft>convert /?
Converts a FAT volume to NTFS.
CONVERT volume /FS:NTFS [/V] [/CvtArea:filename] [/NoSecurity] [/X]
volume Specifies the drive letter (followed by a colon),
mount point, or volume name.
/FS:NTFS Specifies that the volume will be converted to NTFS.
/V Specifies that Convert will be run in verbose mode.
/CvtArea:filename
Specifies a contiguous file in the root directory
that will be the place holder for NTFS system files.
/NoSecurity Specifies that the security settings on the converted
files and directories allow access by all users.
/X Forces the volume to dismount first if necessary.
All open handles to the volume will not be valid.
Brilliant, simply brilliant. Thanks again, Scott.