Registry Settings for FAT Format Options
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8/28/2008
The following table shows registry values for FAT that control formatting. These values can be placed at:
HKEY_LOCAL_MACHINE\System\StorageManager\FATFS\FormatOptions
For All Platforms
| Registry Value/Type | Applies to | Description |
|---|---|---|
FormatClusterSize: REG_DWORD |
FAT, TFAT |
Set to cluster size in bytes. The following limits apply: Cluster size limit of 32 KB for FAT Cluster size limit of 1MB for TFAT |
FormatFatVersion: REG_DWORD |
FAT only |
Values of 12, 16, or 32. |
FormatNumberOfFats: REG_DWORD |
FAT only |
Values of 1 or 2. |
FormatTfat: REG_DWORD |
TFAT only |
Set to 1 to format volume as TFAT on auto-format or through IOCTL_DISK_FORMAT_VOLUME. |
FullFormat: REG_DWORD |
FAT, TFAT |
Set to 1 to specify full format on auto-format. |
SecureWipe: REG_DWORD |
FAT, TFAT |
Set to 1 for secure wipe on auto-format. For more information, see Erasing User Data from Devices. |
For Windows Embedded CE
| Registry Value/Type | Applies to | Description |
|---|---|---|
FormatClusterSize: REG_DWORD |
exFAT |
Set to cluster size in bytes. The following limits apply: Cluster size limit of 32 MB recommended for ExFat. |
FormatExfat: REG_DWORD |
exFAT only |
Set to 1 to format volume as exFAT on auto-format or through IOCTL_DISK_FORMAT_VOLUME. |
FormatTfat: REG_DWORD |
TFAT only |
Set to 1 to format volume as TFAT on auto-format or through IOCTL_DISK_FORMAT_VOLUME. Setting this value implies exFAT. |
FullFormat: REG_DWORD |
exFAT |
Set to 1 to specify full format on auto-format. |
SecureWipe: REG_DWORD |
exFAT |
Set to 1 for secure wipe on auto-format. For more information, see Erasing User Data from Devices. |