This was a bit trickier than I hoped it would be. I didn't really want to reinstall windows 7 and the default ubuntu install didn't seem to detect the right partition to overwrite MBR (or Windows 7 was doing something odd). In lieu of digging into what was really going on I ended up adding an entry to the windows 7 bootloader using BCDEdit, following these directions. I diverged from those instructions by running the "dd" command immediately after install while still within the ubuntu live environment (thereby avoiding the reboot). Following that route seemed to be the quickest. I tried the alternate iso route earlier but it turned out that wasn't necessary with 11.10.
Hope this helps out anyone else out there dealing with the same issue. If this is unclear I can add more details. This was done with the amd64 11.10 iso, default partition was /dev/sda5 for me, I could mount the main windows 7 system partition with the ubuntu disk utility (it mounted to /media/Windows7_OS). Those would likely be the defaults for someone else going this route as well but YMMV.
Lack of Elegance
on building web apps
Sunday, November 13, 2011
Thursday, October 21, 2010
a couple videos from DjangoCon 2008
Cal Henderson on why he hates Django, covers issues of scaling and how Django may implement better scaling features in the future. Some of these are likely implemented now.
Guido on the Google App Engine:
Guido on the Google App Engine:
Sunday, October 3, 2010
upgrading PostgreSQL on Debian/Ubuntu
I've been upgrading pg on a few servers today. One from 8.1 to 8.4 (debian) and the other from 8.2 to 8.4 (ubuntu). In both cases the process worked as noted here (though I used aptitude):
Once you're sure that's working:
- backup your db(s)
- add backports repositories ubuntu, debian instructions (don't forget about pinning)
aptitude install postgresql-8.4
pg_dropcluster --stop 8.4 main
pg_upgradecluster 8.1 main
Once you're sure that's working:
pg_dropcluster --stop 8.1 main
apt-get remove postgresql-8.1
Friday, October 1, 2010
mysql string search and replace
UPDATE [tablename] SET [fieldname] = REPLACE([fieldname],"[oldstring]","[newstring]");
The code above would operate on every row in the table but you may want WHERE conditions. Example:
UPDATE profile SET homepage = REPLACE(homepage,"blargh.example.com","foo.example.com") WHERE first_name="Joe" AND last_name="Schmoe";
Will change Joe's homepage to http://foo.example.com/ instead of http://blargh.example.com/.
Sunday, August 15, 2010
Sunday, August 8, 2010
more altruistic engineers
Awesome story about the devs who created "Graphing Calculator 1.0, which Apple bundled with the original PowerPC computers". They basically built it on their own time, unofficially, at Apple without being Apple employees and without official approval.
Saturday, August 7, 2010
great video on the Python GIL
Taught me more than I wanted to know about how the GIL works and reveals a critical problem.
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