# How to erase the QSPI flash #

If you wish to entirely erase the QSPI flash of the discovery kit, (e.g: 
for repurposing it), while the software is **not** in USB storage mode, 
press the user button twice. It will proceed to unmount the file system 
created on the flash, and then proceed with the erasing procedure. This 
usually takes a few minutes, so please be patient.

Once it is done, the system will deinitialize the block device and halt. 
You can then flash another program on the internal flash of the 
discovery kit.

Here are a few things to keep in mind:
* If you reset the board in the midle of the erase procedure, it will 
recreate a new file system, as per the behavior of Tardis
* The same applies if the procedure was completed.
* This procedure is permanent and currently doesn't propose to cancel 
the action in any way. Please be sure that you really wish to do this!