If you have FE-xplorer then you will notice that as you launch the application, you can see 4 different drives, C:, D:, E:, and Z: Drive. Below are a little details about them.

C:\ - This drive is also called phone memory. Basically it is a flash memory where we can install applications and store our data. Unlike memory card, it is always inside our phone. So, even if we remove the memory card, our data are still there. However, note that the size of phone memory is limited.

D:\ - It is the drive used to store temporary files. The contents will be deleted when the device reboots. In many cases, we don’t use this drive.

E:\ - It is the drive of your memory card. Normally, this is the place where we install applications and install our data.

Z:\ - This is where the ROM image is stored. It contains all the operating system’s applications and data files. Since it is read-only memory, you cannot write anything. The only way to modify the contents of Z:\ drive is by flashing the phone, for example via Nokia Software Updater.

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