[lkml]   [2003]   [Dec]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: PROBLEM: floppy motor spins when floppy module not installed
    Quote from "Richard B. Johnson" <>:
    > On Fri, 12 Dec 2003, [iso-8859-1] M=E5ns Rullg=E5rd wrote:
    > > Dale Mellor <> writes:
    > >
    > > > 1. Floppy motor spins when floppy module not installed.
    > >
    > > It's a known problem. Some broken BIOSes don't turn off the motor
    > > after probing for a disk. One solution is to change the boot priorit=
    > y
    > > in the BIOS settings so the hard disk is tried before floppy. If you
    > > ever need to boot from a floppy, you can change it back.
    > >
    > > --
    > > M=E5ns Rullg=E5rd
    > >
    > It is not a broken BIOS! The BIOS timer that ticks 18.206 times
    > per second has an ISR that, in addition to keeping time, turns
    > OFF the FDC motor after two seconds of inactivity. This ISR is taken
    > away by Linux. Therefore Linux must turn off that motor! It is a
    > Linux bug, not a BIOS bug. Linux took control away from the BIOS
    > during boot.

    We discussed almost exactly the same problem at length on LKML just
    two months ago:

    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2005-03-22 13:59    [W:0.022 / U:17.228 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site