SD Card (very) slow to unmount on Mac OS X ?
This is due to spotlight indexing the card, especially when large stl files are on the card.
There are two solutions to fix this :
- type this Terminal command when the SD card is mounted :
mdutil -i off /Volumes/Smoothie/
- and/or place an empty file named “.metadata_never_index” at the volume root. this can be done very fast with the following Terminal command :
cd /Volumes/Smoothie/ touch .metadata_never_index