Casio IT-800 Series Software Manual page 27

FlashDisk
The FlashDisk has a total capacity of 256MB and is used for the below purposes.
Boot area : Deploys the OS files to the RAM from the OS disk.
OS disk/Kernel : Stores the OS files. Boot loader is deployed in the RAM at time of booting.
User disk : A disk user can freely use. It comprises the RootDisk which is mounted in
Spare : A substitution sector of the FlashROM
• In the boot area, boot loader and etc. are stored to deploy the OS files/Kernel into the RAM.
• In the OS disk, the OS module, drivers, integrated applications and etc. are stored.
• The UserDisk different in its structure from RAM does not require a power to back up data in
the disk, so data is not lost even if the terminal's memory backup battery runs down.
• The FlashDisk is observed as \FlashDisk driver under "My Device" and stores backup data
used to restore the system to the same condition before unstable condition occurs. Data stored
in the FlashDisk for restoration is not deleted by performing a full reset.
• Formatting the UserDisk deletes registry, patch files, program files and data, and initializes the
system to the factory default.
Note:
Formatting on the UserDisk is carried out by a dedicated format tool in the Windows folder or by
operating special keys. See the next chapter concerning the special keys operation.
the system root folder and the FlashDisk.
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