You can run this command, to clear the caches, so freeing up much memory:
sync; echo 3 > /proc/sys/vm/drop_caches
Here is my journal, I'm just to use this as journal of my work, to keep remember what i found in doing my day to day work. So i'm not really mean to make a nice blog, but hope this may help some people too.
Now the target harddrive is bootable from your powerbook, and you can continue to exchange the harddrive.sudo bless -folder /Volumes/TARGET VOLUME NAME/System/Library/CoreServices
sudo asr -source /Volumes/OSX BOOT VOLUME NAME/ -target /Volumes/TARGET VOLUME NAME/
The command will resulted:asr: did not copy blessed information to target, which may have missing or out-of-date blessed folder information.
And it's normal, just continue with blessing the target harddrive with previous command.