[Ovmsdev] make apt-flash destination location?

Hi All, Quick question: I am experimenting with some code changes and i am using the sdcard method to get a new .bin file on the device. It will automatically alternate between the 2 OTA image loactions which is great. I would like to make this process a little less labor intensive: When i use "make apt-flash", where does the code get flashed? With this method, how can i pick between the 2 OTA image locations? Thanks, Eddy