Use PhysDiskWrite utility for Windows or dd program for UNIX/Linux to write the given disk image on a CompactFlash. Warning: These commands are potentially dangerous as they allow you to overwrite your system disk unintentionally, so please double-check the destination disk. In no event shall MikroTik be liable for any damages caused by improper use of low-level disk write utilities or the given disk images. Note: The PhysDiskWrite utility is written by Manuel Kasper as part of his m0n0wall project ( http://www.m0n0.ch/wall/ ). It is not required that you use this utility to write CompactFlash (but it is the only one that was tested by us), so you can use any other that can write on a medium raw image of a disk (like 'dd' utility for UNIX/Linux does)