Where can I change the default workspace in Eclipse?
Whatever Frank has suggested to change in config.ini is correct. In case, if that didn't help, you need to remove path from recent workspace as below.
eclipse\configuration\org.eclipse.ui.ide.prefs\"org.eclipse.ui.ide.prefs" Remove the first path in RECENT_WORKSPACES.
MAX_RECENT_WORKSPACES=5
RECENT_WORKSPACES=/Users/wrokspace1\n/Users/wrokspace2\n/Users/wrokspace3\n/Users/wrokspace4
RECENT_WORKSPACES_PROTOCOL=3
SHOW_WORKSPACE_SELECTION_DIALOG=false
eclipse.preferences.version=1