I have a Raspberry Pi 3b running the latest version of OpenMediaVault, which I installed using the official-ish script onto a clean and updated Raspberry-Pi OS installation that I created with PiBakery. I have a 250GB Samsung Evo SSD attached to it via USB3. The SSD has a single NTFS partition containing media files.
When I plug the drive into the pi it automounts with no problems and I can access it and the media files under the path
ntfs is also the drive label). The media files play in omxplayer with no problems.
$ uname -a Linux file-server 4.19.66-v7+ #1253 SMP Thu Aug 15 11:49:46 BST 2019 armv7l GNU/Linux
$ blkid /dev/mmcblk0p1: LABEL="boot" UUID="A75B-DC79" TYPE="vfat" PARTUUID="d6ccd585-01" /dev/mmcblk0p2: LABEL="rootfs" UUID="485ec5bf-9c78-45a6-9314-32be1d0dea38" TYPE="ext4" PARTUUID="d6ccd585-02" /dev/sda1: LABEL="ntfs" UUID="01D6C8FA8EC2AB30" TYPE="ntfs" PARTLABEL="Basic data partition" PARTUUID="60c85df0-1596-01d6-f82e-6430cb0aeb00"
Despite this drive working fine, OMV won't allow me to share it. In fact, when I try to share a folder, there are no devices at all in the device dropdown.
I have found a similar question, but it was the result of using a mechanical disk and not having enough power to drive it resulting in it not being mounted by the pi. My problem is different in that I can access the disk.