Error 1327 “Invalid Drive” while installing or updating applications in Windows

Posted on January 21, 2011 by Robert

Symptoms

When trying to install or update an application, you receive an error message similar to the following:

Error 1327. Invalid Drive: Z:

I’ve encountered this error installing Google Earth and another application, and it also apparently happens with many others including Microsoft and Adobe applications.

Cause

These installers/updaters are failing to access the drive that one of your shell folders is on — probably your Personal folder, ‘My Documents’. This could be because: Continue reading →

Posted in Windows Tech Support | 24 Comments

AT&T U-verse for the Curious Consumer – The Residential Gateway and Wiring Options

Posted on January 16, 2011 by Robert

AT&T U-verse is an Internet, TV (IPTV), and phone (VOIP) service delivered primarily by fiber and existing copper. This article is targeted at consumers who would like a little bit of light shed on the in-home hardware (what it does, how it works, and the different ways it can be set up) and wiring options.
Continue reading →

Posted in Personal Technology | 8 Comments

bebooper

Posted on October 19, 2010 by Robert

bebooper [bee-boo-per]: beep + boop + computer

-noun

  1. Those things in movies that look like computers, but beep or boop every time something is clicked on, whir whenever there’s a progress bar, or ever show an “ACCESS DENIED” message in a 36 pt. or greater font size. These devices are often also likely to be able to enhance images, interpolating up to 729 pixels where there were originally only nine.
Posted in portmanteau | 1 Comment

View Your Google Apps Calendar in Outlook 2007/2010

Posted on August 1, 2010 by Robert

Microsoft Outlook (2007 and 2010) and Google calendar both support the iCalendar format, which means you can view your Google calendars in Outlook. This is great if you, for example, want to be able to see your Google Apps personal calendar and Exchange work calendars in one place. It looks like this:

Outlook and Google Calendars overlaid in one view. The color of an item indicates which calendar it's from.

If you’re a regular Gmail user, you may follow the directions at How-To Geek. However, if you’re using Google Apps for your domain/business (or organization, family, or whatever), you would likely run into a couple obstacles with those steps.

Note that this is for just viewing your calendar — you will not be able to add or edit events to your Google Calendar. This might be your best option when other solutions aren’t appropriate, for example:

  • you’re not a Premium Edition user and can’t use Google Apps Sync or
  • you can’t use Google Apps Sync because you need full use of Exchange at the same time

Here’s what you’ll need to do to add a Google Apps calendar to Outlook, which includes enabling this feature for your domain (needs to be done by an Administrator) and a tiny bit of URL hacking…
Continue reading →

Posted in Personal Technology, Web Technology | 19 Comments

s3nukem – Delete large Amazon S3 buckets

Posted on July 30, 2010 by Robert

s3nukem is a slightly improved version of s3nuke, a Ruby script by Steve Eley that relatively quickly deletes an Amazon Web Services (AWS) Simple Storage Service (S3) bucket with many objects (millions) by using multiple threads to retrieve and delete the individual objects.

Improvements include:

  • The key retrieval thread will pause when the queue contains 1000 * thread_count items. The original script’s queue would grow unabated, eating up memory unnecessarily.
  • All output is automatically flushed, which ensures you can keep an eye on progress in real-time.
  • Added the number of seconds elapsed since the start of the script to the output so you can calculate the rate at which items are being deleted.

Continue reading →

Posted in Web Technology | 6 Comments

WREST (Website REST)

Posted on October 14, 2009 by Robert

WREST [rest] = Website + REST

-noun

  1. A RESTful API service that is made available to its own website. The distinguishing behavior from a regular RESTful API is that calls coming from the client are identified the same way as other calls made by the client’s browser (viz., the client’s cookie(s)) rather than by API keys and secrets/signatures.

I’m currently working on a service that has both a website (usable by the general public), and a RESTful API (currently used by our iPhone app, and later usable by partners). A Flash component of the website also uses the RESTful API when it needs needs data from the server. And while partners will need to obtain an API key, get user approval to make calls on their behalf, and sign calls, it would not be appropriate to expect the same of the Flash component.

So, I made some of the RESTful API calls available in a way such that the client can be identified by cookies instead of an API authorization token.

This results in the service having four classes of HTTP calls: Continue reading →

Posted in portmanteau, Web Technology | Leave a comment

haircro

Posted on October 10, 2009 by Robert

haircro [hair-kroh]: hair + Velcro

-noun

  1. When hair is cut very short (using, say, #2 on clippers), the hair holds hoodie hoods on like it’s Velcro — but it’s hair!

Posted in portmanteau | Leave a comment

Two Subnetworks on One LAN, and Linux arp_filter

Posted on August 31, 2009 by Robert

It’s a rare situation in a small networking environment that having two subnetworks on one broadcast domain can be an issue. I would normally avoid such a scenario (and it’s usually easy to do so) but I recently got AT&T’s U-verse, and the do-it-all device that it requires (a 2Wire 3800HGV-B “residential gateway”) has forced me to put both my private (NAT’d) subnetwork on the same broadcast domain as my public (DMZ’d) subnetwork. While undesirable, this isn’t usually a problem, except that my dual-homed Linux box had trouble behaving with the 2Wire gateway.

The Two-Interface Linux Box

Two subnets on One Broadcast Domain

As you can see in the diagram above, there’s a Linux box on this network that has two network interfaces, Continue reading →

Posted in Networking | 5 Comments

Beware of DVI-I Cables (they are Not Compatible with DVI-D Devices)

Posted on August 20, 2009 by Robert

I recently moved my flat-panel displays further away from my computer, but the DVI cables they came with weren’t long enough to connect the displays to the computer in their new location. So, I ordered some longer DVI cables from Newegg.com.

Turns out that both of my displays’ ports are DVI-D and that the cables were DVI-I.  Well, DVI-I cables have four extra pins that carry analog signal in case you want to use it to hook up an analog display with an analog video adapter. And you can’t stick a 29-pin DVI-I cable into a 25-hole DVI-D port (but you can put a 25-pin DVI-D cable into a 29-pin DVI-I port)! Continue reading →

Posted in Personal Technology | 22 Comments

AT&T U-verse — A Network Geek’s Perspective

Posted on August 1, 2009 by Robert

I just got AT&T U-verse, which delivers Internet, TV (IPTV), and phone (VOIP) service to the home; all this over one pair of copper from the VRAD. My upgrades to the service include HD TV, DVR, and a static IP block for my personal servers. This article sheds some light on some peculiarities about how the 2Wire 3800HGV-B (“Residential Gateway”) they provided behaves when a public/static IP block is involved.

If instead you’re looking to learn more about …

What made this setup interesting to me (from a networking perspective) was that it forced me to compromise on keeping my private network separate from my public network… Continue reading →

Posted in Networking | 1 Comment