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    SubjectRe: 2.4.x kernels, big ide disks and old bios
    Josep Lladonosa i Capell wrote:

    > Hello,
    >
    > the problem is this:
    >
    > bios only supports disks up to 32 Gb.


    I have a 486, bios (as i remember) does not even see the disk.


    >
    > hard disk is 60 Gb.


    HD is 40Gb


    >
    > kernel is 2.4.17
    >

    2.4.15-pre9 + tux2 patches


    > hard disk reports its correct size when reading parameters from the
    > disk, not from the bios
    >
    > verd:/proc/ide/hdc# cat geometry
    > physical 65530/16/63
    > logical 119150/16/63
    >


    [root@head (22:45:56) ~]# cat /proc/ide/hda/geometry
    physical 77545/16/63
    logical 77545/16/63
    [root@head (22:46:07) ~]#


    >
    > when booting (dmesg):
    >
    > hdc: IC35L060AVER07-0, ATA DISK drive
    > hdc: 66055247 sectors (33820 MB) w/1916KiB Cache, CHS=119150/16/63,
    > UDMA(33)
    >
    >


    hda: 78165360 sectors (40021 MB) w/1024KiB Cache, CHS=77545/16/63


    > Linux adopts the 'false' geometry (65530/16/63) ) to bypass the bios
    > boot.
    >
    >


    All I can say is that I have a /boot partition of about 64 Megs, because
    I have / formated as reiser so /boot is ext2 because it's from the time
    that you cannot boot from reiser without notail.


    >
    > I know that there are patches for 2.2 kernels and 2.3 kernels, so as
    > linux adopts the logical geometry (a kiddy trick with lba size). They
    > are very simple (a line), but 2.4 ide implementation is (a little more)
    > complicated. Any patch?
    >


    Well, it works for me, and as I have said, I have a 486, I'm not sure if
    the bios supports this size, but I seem to remember that it even does
    not detect it at boot, or perhaps it detects it as a strange size such
    as 8Gb or 32Gb, just don't remember.

    Linux boots and works for me with no problem in this system.


    > Bon Nadal - Merry Christmas
    >


    Feliz Navidad.


    > --
    > Salutacions...Josep
    > http://www.geocities.com/SiliconValley/Horizon/1065/



    --
    Jorge Nerin
    <comandante@zaralinux.com>

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