Ok, 900mb was a bit excessive, I remove about 500mb give or take... I don't want to compress it further than it already is, which I assume is 'fast'. Seeing as I removed ~500mb from the mounted image, I'm wondering why this is not reflected in the final wim size. I run a tight ship hahha Ok, updated procedure imagex /export full_image 5 single_image imagex /mountrw single_image mount_dir [remove 500mb] imagex /unmount /commit mount_dir imagex /export single_image 1 new_image Results: full_image = 1.77 GB single_image = 1.67 GB new_image = 1.64 GB 500mb is still there somewhere... I'm already short of hair, I can't afford to pull much more out :/ Am I meant to do anything in between any of the steps, like delete/move excess files before exporting? scratches head, oops