Someone recently shared a link to this flickr collection where someone is showing off their basement Macintosh collection. I too have a basement vintage Macintosh collection but mine resides mostly on shelves and only gets pulled out for special occasions. I only wish that I had room and time to create as neat a display as this person has.
Category Archives: Tech - Page 5
I only wish I could have a room like this
Open Source MATLAB Replacements
Many engineers, scientists and engineering students are familiar with the MATLAB product which is used for complex mathematics and mathematical modeling. I recently came across two open source (and free) alternatives. Octave was originally written as a companion to a chemistry textbook being written by professors from the University of Wisconsin and the University of Texas and has grown from there. Octave is available for a wide variety of systems from OS/2 to Windows, Macintosh and Linux.
Another option is SciLab. SciLab is about the same age as Octave but is clearly managed by a consortium and seems especially popular in European countires. Similarly, it is available for many systems such as Windows, Linux and Macintosh.
Multi-booting your Intel Mac without Bootcamp
I recently came across an anonymous Slashdot posting which claims you can multi-boot an Intel based Macintosh without the Apple provided Bootcamp software. The original posting is poorly written so I’ve paraphrased it here, note that more information is also available on this page.
Bootcamp does a few things for you:
- It provides a GUI for the DiskUtil online partition resizer though the GUI is limited and supports fewer partition types than the command line based DiskUtil which can be used without Bootcamp in OS X 10.4.6.
- It contains a graphical bootloader for selecting OS X or Windows upon boot, but other bootloaders are available.
- It contains a diskimage with Windows drivers for the Apple hardware, but these drivers can be extracted without installing the Bootcamp software.
Because the Intel Macintosh platform uses EFI instead of a BIOS you need firmware on your Macintosh which supports BIOS emulation. All of the recent Macintosh firmwares do and simply updating your firmware to the latest version will add this capability.
The most critical compnent of a multi-boot Intel Macintosh system is the bootloader. Luckily an open source third party bootloader, which is much more configurable than the one provided in Bootcamp, is available. The rEFIt project provides a graphical boot menu and maintenance toolkit allowing you to create triple-boot scenarios such as OS X, Windows and Linux.
I’m quite impressed by rEFIt and would actually be interested in seeing this work and potentially using it on other EFI based systems.
DIY Rapid Prototyper
Those familiar with rapid prototyping (essentially 3D printers for computers) know that both machines and supplies can be extremely expensive. Now a group known as Fab@Home has published instructions and software for building your own rapid prototyping machine. The machine they propose is certainly not as durable or precise as the commercial offerings, but at a fraction of the cost it may serve your needs just fine. If all you’re looking to do is a bit fo experimentation or introducing students to what a rapid prototyper can do a less expensive system such as this might be all you need. NewScientistTech also has a story on the Fab@Home project.
Happy Birthday Square One
Today is the twentieth birthday of Square One Television, the 1980s and 90s television show produced by Children’s Television Workshop (CTW, now Seseme Workshop). Many of us remember watching both Square One (for math) and 3-2-1 Contact (for science) as children. To some extent educational science programming continued after the discontinuation of 3-2-1 Contact, both Newton’s Apple (for adults) and Bill Nye (for students) continued the trend of high quality educational science programming, though both of those programs have also ceased production. Yet there has never been another successful attempt at educational math programming that I’m aware of. The same fate was met by Ghostwriter (for reading/writing) and Where in the world is Carmen Sandiego (for geography/social studies) which were also popular educational PBS programs. Although these programs may sometimes have been of dubious educational value, they were certainly more educational than much of what is found on afterschool television today and they were enjoyed by a great many people.
Aside from a reprise in this creative and clever educaitonal television writing for school-aged students (most educational programming these days seems aimed at the pre-school to 2nd grade crowd) I would hope that the producers of these early pioneering shows would see fit to release DVDs. Much of this programming is still used in schools because nothing better has come along and the episodes would also be enjoyed by a wider populace which either remembers them or is looking for quality educational programming. Until the day these are available on commercial DVD I’ll have to be satisfied by the tape collection which I have traded with other collectors and converted to DVD.
For more information on Square One Television visit the fantastic Square One Television fansite and forums. For more information on 3-2-1 Contact and early science programming read 80s Science TV at Inkling Magazine.
Bypassing Macrovision protected content with a consumer electronics device?
I was recently reading this CoolTools article in NetworkWorld where Keith Shaw was explaining some of the gadgets he found at CES. One of the things that caught my eye was his explantion of the Streaming Networks iRecord Personal Media Recorder.
What caught my eye was his explanation that this device would allow you to “connect a DVD player…and press the record button…[to] instantly record the video’s content onto your video iPod.” Appaerently you can do the same thing with a PSP or any USB storage device. This is interesting to me because most DVD players, at least those sold in the US, output an analog copy protection system (Macrovision) when playing back digital content protected by a digital copy protection system (CSS). While such analog protection is easily removed by devices designed to do so and can be ignored by digital recording software most digital recording software and hardware manufacturers have been pressured (perhaps with legal threats, I don’t know) into detecting such copy protection on analog inputs and refusing to record. Either there was some misinformation in the NetworkWorld article or the iRecord was ignoring this protection.
I needed to look into this further so I checked out the Streaming Networks page for the iRecord. This page also blatently talks about recording DVDs though the analog inputs on the device. After some further poking around on the site all I could come up with was an FAQ entry explaining this is legal to do (good thing Fair Use still works to avoid analog copy protection, too bad the same can’t be said of digital transcoding thanks to the DMCA…)
The next stop was a CNet review which stated emphatically that “it can record protected DVDs” this seems to put the issue to bed. My only question now is how they avoided having to enforce the Macrovision protection when everyone else does. One potential answers lies in an older cached copy of the CNet review which states “In accordance to the terms, you won’t be able to get this [Macrovision protected] video off of your USB device (iPod, PSP) as you can with other recorded content.” This no longer appears in the current version of the article. Perhaps the information was incorrect and the Macrovision protection is ignored, but perhaps this just isn’t being talked about.
St. Paul, Minnesota Explores Municipal Fiber
Being someone who believes that while municipal wifi is nice it is overhyped and should come after fiber to the premesis (where I do much more computing anyway) I’m excitied to see that the nearby city of St. Paul, Minnesota is exploring municipal fiber.
What the St. Paul Broadband Access Committee (BAC) may not be aware of, but something I suggested they read is Bob Cringley’s article from last year about a new model for municipal connectivity. Instead fo relying on the municipality itself to provide Internet service, arguably with the potential to be a worse system administrator than the RBOCs and cable companies, his suggestion is a public/private partnership. Following his thinking, which comes from Bob Frankston (of VisiCalc fame) and others, the city would install and own the fiber infrastructure from central connectivity points to end users but would not actually provide any Internet (or voice or video service) leaving that up to private providers. In fact, the municipality would not be responsible for any of the electronic equipment either, just the raw pipes (or tubes if you prefer).
The beauty of this solution is that the city will own the infrastructure and allow multiple providers to compete to provide service. That competition, in addition to the fact that providers will not have the large up front cost of installing the fiber itself, should allow for service costs to remain quite low. In addition, with the use of technologies such as optical splitters and combiners it would be possible to get Internet from one provider, voice from a second and video from a third if you so chose. It’ll be interesting to see if this can take off, one thing I know is that I’m not especially interested in having government control the Internet portion of my service, the potential for abuse such as censorship or snooping is simply too great, but I have no problem with them owning some of the last-mile infrastructure if it means I can select from a number of providers!
Explaining the Cingular/AT&T Name Change
I recently ran across this video of Stephan Colbert explaining the Cingular/AT&T name change. He goes though a complete explantion of the lineage of Cingular back to the original AT&T and ends up how today’s AT&T looks a lot like the AT&T of the early 1980s…
Expanding the size of a Debian Linux software RAID 5 array
Not long ago I built a new storage and mail server to replace several aging servers. I knew that to provide space for all my files and a little room to grow I would need a little more than a terrabyte of storage space and that I wanted this to be in a redundant RAID array. I mentioned in a previous post how I created a software RAID + LVM setup for this. The one catch is that my motherboard had fewer SATA ports than I initially thought so I had to leave one drive off the srray while I got things up and running.
A few days ago the PCI Express SATA controller came in so I needed to add the fifth drive to the existing array, ideally without breaking anything. The first few site I checked stated this was not yet possible but after doing a bit more checking I found out that if you have a current kernel, mdadm and LVM2 tools it actually is. I based this on information from the Gentoo-wiki but I did make a few changes for my specific scenario.
Really the only additional information I needed was to copy the partition table from one of the other drives (sdd) to the new drive (sde). “sfdisk -d /dev/sdd | sfdisk /dev/sde
”
I also use “lsof /home
” to find which processes had open files on the volume before I unmounted it. I also set the stride flag on resize2fs to 16 based on my block and chunk sizes. Apparently getting this correct has a great bearing on speed and efficiency. For the record the stride size should be chunk size (from /proc/mdstat) divided by block size (from the file system). In my case my chunk size was 64k and block size 4k.
Creating free installers for Windows applications
On a recent trip around the web I discovered two open source tools that allow you to create installer packages for Windows applications. The Nullsoft Scriptable Install System (NSIS) has been around for quite a while, I even used it once upon a time to package up a few scripts of mine. A chief complaint at that time was that it didn’t look or operate in the same way the Microsoft Installer (MSI) programs did which has the potential to confuse some users or make them feel that your software was of a lesser quality. In fact recent versions of Mozilla Firefox, Gaim, OpenOffice and many other popular applications use NSIS for the installer. An interesting thing about NSIS is that you can cross compile the Windows installer on POSIX OSs such as Linux.
An alternative to NSIS is Inno Setup which has been around since 1997 when the author grew frustrated with InstallShield Express (ahh the days of InstallShield). Since that time a community of support for this installer has developed leading to tools such as ISTool, a graphical intergface for creating the installer script. One of the interesting things about Inno Setup is the extensive support claimed for installing 64-bit applications, something bound to catch developer’s eyes as more consumers move towards 64-bit computing.
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