On 01/24/2015 10:49 PM, Rock Lee wrote: > Thanks for your advice. I've implemented a filesystem based on ext3 fs. > In order to test the performance of this fs as root fs, I have to install a > particular kernel and mkfs tools to serveral PC. Your advice is extremely helpful, > thanks again. Presumably, the normal installer won't be able to read your filesystem even if you download your own kernel and tools in %pre. You could create a driver disk to add your filesystem driver as a module to the normal installer, in addition to the advice you were already given: http://www.emeneker.com/modx/index.php?id=26 Or you could use pungi to compose a new installer entirely -- one that contains your kernel module.