Technology

PC Hardware Failures

I'm noticing some patterns in PC failure. Here they are.

Batteries fail, causing date errors, or worse, booting problems. These fail after 2-3 years, and can be replaced easily for around $10.

Hard drives fail after around 5 years, causing much pain. Laptop drives can fail after just a year, and tend to develop bad sectors due to mishaps with the laptop. For maximum happiness, replace the drives before they fail, and use the originals as archive drives.

Motherboards sometimes fail, but not on any predictable schedule.

Motherboards can fail if the capacitors dry out or start to bulge and explode. This is more common than it should be, but at the same time, all caps tend to fail after years of use.

(I've also seen small ethernet switches fail due to bad capacitors.)

Changing Windows 2000 Professional to Windows 2000 Server

The main reason to do this is to allow more than 10 clients to connect to your computer. Aside from that, Win2k Pro doesn't come with all the applications and services that Win 2k Server includes.

Info stolen from: http://www.commodore.ca/news/2002/mar30_02.htm

Week Ending March 30, 2002

Change Windows 2000 Pro To Windows 2000 Server with Freeware Util
NTSwitch is a small freeware program that allows you to turn an existing NT Workstation or Windows 2000 Professional installation into an NT Server or a Windows 2000 Server environment.

It's well-known that Workstation and Server environments are virtually identical. The operating system decides which "flavor" to run in based on two registry values:

Reading Stuff: Vista Hobbles Microsoft, Social Nets "Like Air", Work

Strange story. MS execs were upset about problems getting their new Vista computers to function well. @NYT.

Good article. Social networks will be like air

The sad state of the labor department, which now dislikes workers. http://shameonelaine.org/.

How to Stay Virus Free with Windows XP, the Bare Minimum

1. Get some kind of anti-virus software. Consumer Reports recommends PC-Cillin, which is cheap and doesn't bog the system down.

2. Start using Mozilla Firefox. It's attacked less often than Internet Explorer.

3. Avoid clicking on attachments. Avoid using MySpace. Avoid Yahoo Instant Messenger.

4. Get a copy of the Ultimate Boot CD for Windows, and learn to use it to clean the system of most viruses. What UBCD doesn't catch, the other antivirus software should catch.

Beyond Logic: great S.M.A.R.T. tool

Beyond Logic has a great SMART disk tool. It's only 18K, and dumps the data. Everyone else's is up over 250K.

Here are two outputs:

$ smart
SMART & Simple for Windows NT/2000/XP V1.01
Copyright 2001-2003 Craig.Peacock@beyondlogic.org
Opened Drive \\.\c: . .

SMART Enabled    : Yes
Model Number     : IC35L090AVV207-0
Firmware Version : V23OA66A
Serial Number    : VNVC02G3DAEXZT
Drive Size       : 80.000 GB


ID   Attribute                  Type  Threshold Value Worst        Raw Status
---- -------------------------- ----- --------- ----- ----- ---------- --------
[01] Raw Read Error Rate        Prefailure   60   100   100          0 OK
[02] Throughput Performance     Prefailure   50   153   153        238 OK

Gentoo, Luxi, the Weller BP645 Soldering Iron

Finally, after all these years, I've installed Gentoo. It's really nice, and reminds me of BSD Ports, except that the documentation is more thorough. Ports is good, but Gentoo's emerge is really, really nice. It's also fast, as expected, and took a long time to build, as expected.

Deleting a Windows User You Can't See

Windows XP's Users control panel doesn't show all the users. I had to delete the "postgres" user to reinstall postgresql on my comp. To do this, I had to run this command:

NET USER /DELETE postgres

To see all the users type NET USER.

Windows XP Boot USB

1. A USB drive. I ended up with a SanDisk OEM'd one from Staples.

2. Ultimate Boot CD for Windows is good because it has a lot of tools. There are others, but many seem to be based on Bart PE.

3. PE to USB, takes Bart PE output and writes a bootable USB drive.

4. If it BSODs, HERE is a fix.

Typewriter as Computer Keyboard

How cool is this?

Project 1

Project 2

Flash on 64-bit Ubuntu Linux (Yet another Howto)

[This is obsolete.]

Yes, yet another short tutorial.

1.

sudo apt-get install -y ia32-libs lib32asound2 lib32ncurses5 ia32-libs-sdl ia32-libs-gtk gsfonts gsfonts-x11 linux32

Old Atheros-Based WiFi Cards

For a number of reasons, Linux works well with Atheros cards, but not so well with Broadcom (unless it's in an embedded router). It seems like the distros all have support for the old MadWiFi driver. This is a short list of cards with ebay links:

Netgear WG311T

SysRank, a Scoring System to Determine Computer Performance

This is a simple formula to rank computers, so you can determine which machine in the network should probably be upgraded first.

SysRank = Sqrt( (CPUs * CPUSpeed) ^ 2 + Memory^2 + DiskSize) )

This doesn't account for things like the actual performance you get when you're using the computer, what the computer's purpose is, and other more important qualities. It's just a basic formula you can use to sort your list of computers, to get a good idea of which one could use some help.

Restarting WiFi on OpenWRT if the Link Goes Away

I put my WRT54G into a noisy electrical environment, and it seems to cause the wifi to fade out a couple times a week, sometimes permanently.

NVU Installer for Ubuntu Feisty Fawn

For some reason or other, they don't have NVU for Ubuntu 7. You can install it from the .deb file. Instructions are at:

http://linuxdesktopsoftware.com/2007/04/nvu_install_on_ubuntu_feisty.html

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