Windows 7 really prefers the hard disk drives that use the NTFS file system. For better performance its better you use NTFS file system in widows 7. Its integrated backup program cannot back up files from or to drives that use the older FAT32 file system. So, if you select a drive that uses FAT32 as the backup location, Windows 7 displays an error message. FAT32 lacks the features needed to fully support Windows 7 backup. Use Convert.exe to solve this problem.
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Open a command-prompt session
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Use the following command to change your external hard disk’s file system:
convert x: /fs:ntfs (replace x with the actual drive letter of your external hard disk).
Convert.exe will check your external hard disk for errors, verify there’s enough space for conversion, and then convert with no problem. While this theoretically will not destroy your data, we recommend you back up your files first because its better safer than sorry.
