df to see what device your external drive is, for example, for me the appropriate line looks like this:
/dev/sdc1 4883769340 2392246688 2491522652 49% /media/drew/LACIE-5GB
/media/drew/LACIE-5GB is where the disk got mounted and the appropriate device is
/dev/sdc1 - this can change depending on how many external drives you have and in what order they were connected.
/dev/sdc1: LABEL="LACIE-5GB" UUID="703C31971BEBAA7E" TYPE="ntfs" PTTYPE="dos" PARTLABEL="LACIE-5GB" PARTUUID="6afdadd9-39ce-4875-b747-82cae734ae02"
The UUID is
So one can put a line like this into fstav:
UUID=703C31971BEBAA7E /media/drew/LACIE-5GB ntfs defaults,noauto,noatime,uid=1000,gid=1000,umask=0000,fmask=0111 0 0
noauto is important - if the drive is not connected on startup and that option is not present, the boot halts and needs to be manually restarted.
uid=1000,gid=1000,umask=0000,fmask=0111 are just options for NTFS not to make every file executable (which prompts Nautilus to ask if a file is to be displayed or run when I try to read a txt file, for example).
noatime is the option originally requested.