Re: Grub.conf and maximum memory

From: ohaya (ohaya_at_cox.net)
Date: 07/02/04

  • Next message: Tommy Reynolds: "Re: Have I been pwned?" 
    Date: Fri, 02 Jul 2004 16:10:47 -0400

    tim wunder wrote:
    >
    > On 7/2/2004 3:42 PM, I believe that ohaya wrote:
    >
    > > Hi,
    > >
    > > I currently have 128MB in my Linux machine, and I just got another 256MB
    > > stick. I ran a memory test on the new stick, and it appears to have
    > > problems above 128MB (it's low-density, and the PC recognizes the full
    > > 256MB with just this new stick, so I know it's the correct memory type).
    > >
    > > While I'm waiting to get a replacement, I was wondering if I could tell
    > > Linux to only use 256MB (128MB from old stick + 128MB from new stick)?
    > >
    > > I've done some searching, and it seems like I can do this by adding
    > > "mem=256" to the "kernel" line in /boot/grub/grub.conf.
    > >
    > > What I'm wondering is: If I do that, and if it causes a problem and
    > > prevents the machine from booting, how can I boot into Linux to re-edit
    > > grub.conf to get rid of the 'mem=256'?
    > >
    > > Thanks,
    > > Jim
    >
    > Don't change you're grub.conf file until you've tested it. grub allows
    > you to temporarily change the settings from whichever kernel/O/S you boot.
    >
    > During boot, when prompted to select what kernel to boot, press 'e' to
    > edit the selection, then add the "mem=256" to the "kernel" line, then
    > press 'b' to boot (or something like that, I'm not sure of the exact
    > letters to use to temporarily change grub, there should be something on
    > screen that will help you...). That way you can make sure the change
    > works before committing it to your grub.conf file.
    >
    > 'man grub' might be of some help...
    >
    > HTH,
    > Tim

    Tim,

    Great!! That worked perfectly. Letters were "e" to edit, and "b" to
    boot. I added "mem=250M", and it boots and 'cat /proc/meminfo' shows
    250MB.

    For some reason, adding "mem=256M" would cause the boot to fail.
    Hopefully I can get a good stick replaced by the guy I bought it from.

    Thanks again,
    Jim

  • Next message: Tommy Reynolds: "Re: Have I been pwned?"

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