Hercules Wireless Pico USB HWNUp-150 working on OpenBSD

Unfortunately, the Broadcom BCM4315 wireless adapter from the Dell Inspiron Mini 10 is not supported by OpenBSD (as of 5.0). So I looked for a wireless USB adapter. First I looked at my favorite online shops to see what was available. Then I searched for the chipset of the adapter I’ve selected.

The Hercules Wireless N USB Pico (HWNUp-150) looked perfect as it is really small. Having a look at urtwn(4), I read that, in theory, this adapter should work. In practice, it does:

urtwn0 at uhub0 port 3 "Realtek 802.11n WLAN Adapter" rev 2.00/2.00 addr 2 urtwn0: MAC/BB RTL8188CUS, RF 6052 1T1R, address xx:xx:xx:xx:xx:xx

Configured for WPA2, it’s up and running.

Run OpenBSD from USB on MacBook Pro

I own a MacBook Pro (5,5 with Core 2 Duo) and wish to test running OpenBSD on it. But I don’t want any impact on my OS X installation. So I’m going to install and run OpenBSD from a USB stick.

What I used

  • A mid-2009 MacBook Pro (MacBookPro5,5);
  • A Corsair VoyagerGT 16GB;
  • An OpenBSD 5.0 (/snapshots/) CD;
  • The rEFIt 0.14 boot selector.

Continue reading “Run OpenBSD from USB on MacBook Pro”

Build an USB Powered Fan

I’m keeping an eye on the temperature of my Dell Inspiron Mini 1012. And since it is powered-on again, according to Munin and the cpu0_temp0 / cpu1_temp0 counters, it runs at an average temperature of 59°C. This is quite a bit hot ; especially when I now it is supposed to have a TDP of 5.5 W and that the XPS M1330 is about 45°C.

The Mini is fanless! This is why I bought it and also probably the reason why it is that hot stored in a shoes cupboard with no air flow. So, I’m gonna give him some air turning an unused internal PC Fan into a brand new USB Powered Fan.
Continue reading “Build an USB Powered Fan”

Boot Mac mini G4 from USB

Don’t know why but my Tiger’s DVD won’t load in my Mac mini PowerPC G4… Hopefully, I can read it from another DVD drive, namely my MacBook Pro’s one. Here’s how I booted the mini from a USB key to reinstall Mac OS X.
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Install NetBSD from USB stick

Since NetBSD 5.1, a special image is generated for i386 and amd64 architecture. This is called “memstick”.

Look at your nearest mirror, in a directory called /pub/NetBSD/NetBSD-5.1/memstick. You’ll find fs.gz image file. Grab the one you want and unzip it. Plug you USB key and issue commands that, from Mac OS X, would look like:

# diskutil unmountDisk /dev/disk3
# dd if=i386memstick-5.1.fs of=/dev/disk3 bs=1m
# diskutil unmountDisk /dev/disk3

Insert the USB key in the laptop and boot from it.

That’s All Folks!