
4 - 10 MC50 with Windows
®
Mobile 5.0 Integrator Guide
minimizing the number of reads and writes to a file, removing unneeded debug logging, and minimizing file
flushing or closing files.
Persistent Storage
Windows Mobile 5.0 protects all data and applications from power-related loss. Because Windows Mobile 5.0
mounts the entire file system and registry in persistent storage (rather than using RAM), MC50 devices provide
a reliable storage platform even in the absence of battery power.
Persistent storage provides application developers with a reliable storage system available through the
standard file system and registry APIs. Persistent storage is optimized for large reads and writes; therefore,
applications reading and writing data in large chunks tend to outperform those applications reading and writing
small blocks of data. Data in persistent storage is lost upon a clean boot.
Persistent storage contains all the directories under the root directory except for Application, Cache Disk, and
Storage Card (if a storage card is installed). Persistent storage is approximately 60 MB (formatted).
Application Folder
The Application folder is a super-persistent storage that is persistent even after a clean boot. Accessing data in
the Application folder is slower than accessing persistent storage. The Application folder is used for
deployment and device-unique data. For example, network profiles can be stored in the Application folder so
that connection to the network is available after a cold boot. The Application folder is approximately 20 MB
(formatted).
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