Best of Technical Support

Our experts answer your technical questions.
Tuning the Kernel to Recognize RAM

How do I get Linux to recognize more than 64MB of RAM? I presume I may need to tune the kernel. How do I do this? —Edward Longstrom

Forcing the Issue from LILO

The reason Linux does not recognize more than 64MB of RAM is actually related to limitations in BIOS. You can force the issue from LILO with an argument of mem=??M, where ?? is the amount of physical RAM in the machine and M stands for Megabytes. To make this automatic, add that line to the block defining the specifics for each boot (image) configuration. —Dan Lark, SuperNet of Las Cruces, Inc dan@netsteps.com

Kernel Doesn't Recognize CD-ROM

I have a Toshiba XM-series CD-ROM that is not recognized by the kernel. I thought it was a standard IDE/ATAPI drive. What could be causing this? —Scott Herscher

Command Line Parameters

First, make sure your CD-ROM is connected to a primary or secondary IDE interface. Kernel 1.2.13 will not see tertiary interfaces. Then you may need to give it command line parameters to have the kernel find it. Here is a chart:Primary Interface - Master: hdaPrimary Interface - Slave: hdbSecondary Interface - Master: hdcSecondary Interface - Slave: hddUse the “hd” parameter for your actual device, based on the chart above, to boot with a command like:

LILO boot: linux hdd=cdrom

If you don't know how the CD-ROM is connected, it is safe to try them all. You can then add this as an append line to your lilo.conf. An example would be:

boot=/dev/hda
map=/boot/map
install=/boot/boot.b
prompt
timeout=50
image=/boot/vmlinuz-2.0.12
        label=linux
        root=/dev/hda2
        read-only
        append="hdd=cdrom"

Make sure to run /sbin/lilo after editing the file. —Donnie Barnes, Red Hat Software redhat@redhat.com

Netscape 2.02 and Linux

Are there any FAQs about setting up Netscape 2.02 with Linux? After you unzip Netscape where do you put the files? When I set up Netscape 2.02 it gives me the error message cannot find lib.so.4. Any ideas? —Marc A. Krushelnyski

Upgrade Recommended

First of all, I recommend using 3.0. You can get an ELF version that won't take up nearly as much memory and won't cause the missing library problem you mention. Second, the README that comes with Netscape tells you where to put the files. I'd put the Netscape binary in /usr/local/bin, then put the zip file in the recommended location. —Donnie Barnes, Red Hat Software redhat@redhat.com

PPP Error Message

I installed PPP support from the control panel, but when I want to access the pppd in /usr/sbin I get the message THERE IS NO PPP SUPPORT IN THIS SYSTEM. I tried to install ppp-2.2.0f.tar.gz to see if that would help, but it didn't. I checked the /proc/net/dev file with a cat command but all I saw was a column of:

s1
s2
s3

and so on with many zeros. What must be done to correct this problem? —Dominik Barth

Installation Error?

You either didn't install ppp-2.2.0f properly, or you didn't compile PPP support into the kernel. A standard distribution kernel should have PPP compiled in, so I would guess your pppd install went wrong.Most likely, you either didn't make install, didn't do make install as root, or your old pppd binaries live in a different place from your new pppd binaries and the path for the old binaries comes before the newer one in your PATH environment variable. —Bert Vermeulen bert@cnct.com

Simple Dialup Program

I cannot set up pppd to connect to my ISP. Chat script is simple in principle but in reality it is impossible to decode and make work. Is there a simple dialup program, preferably in X-Windows, that will solve this problem? —Ken Kim

______________________

Webinar
One Click, Universal Protection: Implementing Centralized Security Policies on Linux Systems

As Linux continues to play an ever increasing role in corporate data centers and institutions, ensuring the integrity and protection of these systems must be a priority. With 60% of the world's websites and an increasing share of organization's mission-critical workloads running on Linux, failing to stop malware and other advanced threats on Linux can increasingly impact an organization's reputation and bottom line.

Learn More

Sponsored by Bit9

Webinar
Linux Backup and Recovery Webinar

Most companies incorporate backup procedures for critical data, which can be restored quickly if a loss occurs. However, fewer companies are prepared for catastrophic system failures, in which they lose all data, the entire operating system, applications, settings, patches and more, reducing their system(s) to “bare metal.” After all, before data can be restored to a system, there must be a system to restore it to.

In this one hour webinar, learn how to enhance your existing backup strategies for better disaster recovery preparedness using Storix System Backup Administrator (SBAdmin), a highly flexible bare-metal recovery solution for UNIX and Linux systems.

Learn More

Sponsored by Storix