Figure 19-15. Formatting the volume

2. In the "Volume label" text box, type a text label for the volume.

3. Use the "File system" list to set the filesystem type. The options you have depend on the size of the volume and type of device, but they include FAT, FAT32, and NTFS.

4. The "Allocation unit size" list sets the cluster size for the filesystem. A cluster is a logical grouping of file sectors. In most cases, you'll want the "Allocation unit size" list to be set to Default. This allows Windows 7 to optimize the cluster size based on the volume size.

5. The "Perform a quick format" checkbox allows Windows 7 to format the volume without checking the partition for errors. Although this option can save you a few minutes, it's usually better to allow Disk Management to check for errors and mark any bad sectors it finds on the disk so that they aren't used.

6. The "Enable file and folder compression" checkbox turns on compression for the disk. Built-in compression is available only for NTFS. If you select this option, files and folders on the volume are compressed automatically. See the section "Compressing Drives" on page 760 for more information.

7. Click OK to continue. Because formatting a volume destroys any existing data, Disk Management displays a warning. Click OK to start formatting the volume or Cancel to cancel.

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