[maaark]

A note for clueless windows users:

    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.

You probably can't do any damage attempting to use it to convert images, but there might be a way to screw up attempting to convert an image so badly you destroy your filesystem.

[cbr]

It's unfortunate that ImageMagick decided to call their primary command "convert".

[praveenscience]

Exactly, this command is for converting a file system and not an image or a single file.