Boot scripts

Boot scripts let you specify which drivers and applications to start, and in what order.

Every board has a different set of boot scripts to support different configurations. You can use these boot scripts to set the sequence in which services and utilities are launched after the OS starts up.

As well as carefully setting the launch sequence, you should limit what the boot script does because:

• It is included in the IFS, so everything that's added to it increases the IFS size and thus, the time it takes to load.
• The SLM service is more efficient at launching services, with the added benefit that it allows you to monitor and restart services as required.

Starting with QNX SDP 7.0, some QNX products, such as QNX CAR and ADAS, use the mksysimage utility script to assemble QNX target images as specified by combinations of small build scripts. These small build scripts are defined in filesets, which are in turn defined in profile and configuration files. For information about these files, filesets, and the image build infrastructure, see the Working with Target Images guide for your product.

For more information about build scripts, see “Scripts” and “Startup Programs”.