I am using a laptop with the external hard drive to scan the photos. I'm scanning (with output resolution 600) on my laptop - choosing "Preview" and then "Save as" and saving to my external drive. The photos are quite big, but the end images are around 50-55 MB. I managed to scan with no problems 15 photos and then after pressing Save As and choosing "Scna with current resolution" I get the error "Sorry, there is not enough free disc space to save scan". I choose resolution 300 and it scan the 16th image fine, then the next one aloowed me to scan at 200... I want to have them all at 600. I have plenty space on my laptop (20.6 Gb free) and my external drive (152 Gb free). What space is the error about? What shall I do, so I can scan the rest of the photos at 600?
(I restarted my laptop, but it didn't help.)