On my ea3500 running 18.06.0 /dev/sda1 doesn't seem to exist, packages I've installed -
kmod-usb-storage
block-mount
kmod-scsi-core
kmod-usb-core
kmod-usb2
usbutils
ntfs-3g
kmod-fs-ntfs
I've tried mounting manually and at startup with this in rc.local -
ntfs-3g /dev/sda1 /mnt/storage -o rw,async
Either way /dev/sda1 never appears and the drive doesn't mount. This is the way I mounted the same drive in 17.01.* and it worked fine, just wondering if something is changed or if this is a bug I should report.