>> because you are using Erik's plan9.iso. >> The usb driver in that kernel and /sys/src/cmd/usb files are older than the >> formal >> distribution of plan9.iso. > > that's not true.
I really experienced this, too, when I tested your March 24, 2010 9atom.iso. I replaced the devusb.c etc under /sys/src/9/pc and all the files under /sys/src/cmd/usb by those in the formal distribution plan9.iso's ones. Then, the usb disk problem went away. Kenji