Unable to modify path to .weight file and other files for training

[PhilipAmadasun]

When training I get an error of:

Couldn't open file: /backup//yolov3_test_final.weights

I have a backup folder at the top directory, with the yolov3_test_final.weights in it: \home\philip\darknet\backup\yolov2_test_final.weights. Why does the the training aglorithm not recognize it? I don't know what script to look at in order to modify path. I assume it's the same script I use to modify these here:

 OpenCV isn't used - data augmentation will be slow 
train: Using default 'data/train.txt'
valid: Using default 'data/train.txt'
backup: Using default '/backup/'

I want to be able to use my GPU and modify path to backup , training and valid.