File Systems

The File Systems collection contains File System plug-ins for various types of file system.

A File System plug-in is used by the File Server to access directories and files in a particular format, such as FAT. You do not have to implement ports of the File System plug-ins that Symbian platform provides. The base port must include the appropriate file systems plug-ins for the types of file system that your phone uses.

A file system plug-in uses the Local Media Subsystem to call the media drivers that read and write the physical storage media, such as MMC. The Base Starter is responsible for mapping local drives to drive letters and for loading the appropriate file systems on local drives.

• File Systems Overview
  Provides several common file system implementation.
• Composite File System
  Read-only flash based memory on the Z: drive.
• FAT File System
  FAT File System is used for storing user data on NAND Flash, internal RAM drives and removable media.
• FAT32 File System
  Used for storing user-data on NAND Flash, internal RAM drives and removable media such as MMC and SD cards.
• ROFS File System
  ROFS stands for Read Only File System and is used for accessing code stored on media that cannot be executed on that media (otherwise known as non-execute in place storage) e.g. NAND flash.
• ROM File System
  File system is used to access code storage on execute-in place (XIP) storage e.g. NOR flash.
• USB Mass Storage File System
  The USB client mass storage system is used to interact with media through USB when connected to a host (a PC or a Symbian platform device).
• Reference
  The following reference is available for the file systems.