Best of Technical Support
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
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 firstname.lastname@example.org
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
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 email@example.com
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
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 firstname.lastname@example.org
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
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 email@example.com
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Enter to Win an Adafruit Pi Cobbler Breakout Kit for Raspberry Pi
It's Raspberry Pi month at Linux Journal. Each week in May, Adafruit will be giving away a Pi-related prize to a lucky, randomly drawn LJ reader. Winners will be announced weekly.
Fill out the fields below to enter to win this week's prize-- a Pi Cobbler Breakout Kit for Raspberry Pi.
Congratulations to our winners so far:
- 5-8-13, Pi Starter Pack: Jack Davis
- 5-15-13, Pi Model B 512MB RAM: Patrick Dunn
- 5-21-13, Prototyping Pi Plate Kit: Philip Kirby
- Next winner announced on 5-27-13!
Free Webinar: Hadoop
How to Build an Optimal Hadoop Cluster to Store and Maintain Unlimited Amounts of Data Using Microservers
Realizing the promise of Apache® Hadoop® requires the effective deployment of compute, memory, storage and networking to achieve optimal results. With its flexibility and multitude of options, it is easy to over or under provision the server infrastructure, resulting in poor performance and high TCO. Join us for an in depth, technical discussion with industry experts from leading Hadoop and server companies who will provide insights into the key considerations for designing and deploying an optimal Hadoop cluster.
Some of key questions to be discussed are:
- What is the “typical” Hadoop cluster and what should be installed on the different machine types?
- Why should you consider the typical workload patterns when making your hardware decisions?
- Are all microservers created equal for Hadoop deployments?
- How do I plan for expansion if I require more compute, memory, storage or networking?