But let your communication be Yea, yea; Nay, nay: for whatsoever is more than these cometh of evil
Friday, June 24th, 2011

A Mac OSX journalling error can inhibit the boot disk to be mounted

The screenshot below shows my desperate search why my Macbook wouldn’t boot again (following a cold reset writing a large Photoshop CS5 file for more than 15 minutes).

The verbose boot mode (APPLE+S) showed some error with the journalling system, basically an error as described at the currently non functioning Apple Support Board

jnl: replay_journal: bad block list header @ 0x4bra50 (checksum 0xega0fee1 != 0x927a5993)
jnl: journal_open: Error replaying the journal!
hfs: early jnl init: failed to open/create the journal (retval 0).

Unfortunately nothing helped. Booting from an external disk just showed a normal, error-free HD in disk utility. (Show me more…)

Thursday, June 9th, 2011

On the way to Istanbul

It seems that with the annual European Allergy Congress this year in Istanbul I want to visit in 2011 all earthquake hotspots … Unfortunately, I do not own a map for my Garmin 60 CSX that covers the city of Istanbul. But wait, here is the trick to create a useful gmapsupp.img from open source map data

  • zoom in the area of interest and export as xml from open streetmap
  • convert xml to osm with josm
  • convert osm to img with java -Xmx512M -jar mkgmap.jar –route istanbul.osm

or just download it from (Show me more…)