Waldo Alvarez Cañizares wrote:
Hi:
It is true that a filesystem that has a usermode component can not be used as a boot driver
I beleive this is not true. There are operating systems (at least I could name one) with all the drivers running in user mode leaving only a minimal kernel. Is sort of a client-server model, and yes with protection for file/folders. Now the ROS boot loader first loads kernel-hal-fat driver-... It has to, otherwise how would you load the filesystem driver? Now switching ring 0 <-> ring 3 with that in RAM... If you also load ntdll that way. Hmmm Why not? I beleive that is enought to read/write something to disk.
Hmmm... maybe I misspoke and wasn't clear.
What I meant to say was that a filesystem that requires a user-mode component can not be the boot filesystem.
Thanks,
Joseph