Hi all, I have a 486 with 1 byte serial FIFO. This means if I transfer stuff through my modem, I get a bunch of bits lost when HD trasnfer any data. To fix the problem I unmasked IRQs on the HD controller. This worked with 2.2.x series. It fails to unmask the interrupts in the 2.4.x series. in /proc directory is says that it is unmasked.... But it isn't as I keep looking bits in transmission when HD starts up!! Anyone have any ideas? IDE driver bug? Thanks, Adam