Registry Settings for TexFAT-Specific Options (Compact 2013)

3/26/2014

You can use registry settings to set options for a transaction-safe extended FAT (TexFAT) file system. You can set these registry settings at the root level of the registry hierarchy or in the registry settings for a profile, which represents the settings for a specific storage medium.

Name	Type	Description	Default Value
ReservedClusters	REG_DWORD	Deprecated. The number of clusters to reserve for when the volume becomes too full.	The default is 4.
SectorsPerSyncAtInit	REG_DWORD	The number of sectors to synchronize at the same time during initialization.	The default is 32.

Remarks

TexFAT requires that the underlying block structure supports atomic sector writes, which ensure that the data written to a sector is updated atomically and which help protect the data against multiple writes. The flash driver and most memory card hardware provide atomic sector write operations. In cases where the block driver is not atomic, TexFAT cannot guarantee transaction safety.

Use the following registry settings for hard drives and other media that do not support atomic sector writes.

[HKEY_LOCAL_MACHINE\System\StorageManager\Profiles\HDProfile\FATFS]
    "NonatomicSector"=dword:1
    "DisableAutoScan"=dword:1

Use the following registry settings for storage media that support atomic sector writes.

[HKEY_LOCAL_MACHINE\System\StorageManager\Profiles\<Profile Name>\FATFS]
    "DisableAutoScan"=dword:1

See Also

Reference

FAT File System Registry Settings
File Systems Registry Settings Overview