Build a socket image from individual files (QNX)
mkimage [ -b blocksize ] -o outputfile file...
The mkimage utility builds a socket image from individual files. The command line is parsed, and the bootable image file(s) are placed first in the resultant output file, followed by embedded filesystem files, then any other files on the command line.
All files are padded up to the block size specified on the command line ( padding is done with 0xFF, the default erased state of flash). If no blocksize is specified, the default is 64K.