# Examples / `flash_test` SMART Flash Device Test

```
Author: Ken Pettit
  Date: April 24, 2013
```

This application performs a SMART flash block device test. This test performs a
sector allocate, read, write, free and garbage collection test on a SMART MTD
block device. This test can be built only as an NSH command

**Note**: This test uses internal OS interfaces and so is not available in the
NUTTX kernel build

```
Usage:

  flash_test mtdblock_device

Additional options:

  --force                     to replace existing installation
```