how to mount [bind] an external hard drive folder using UUID to another folder on a pc

**in short:** ------------- on pc: /home/user/Music: ├─music_from_disk_1 └─music_from_disk_2 on 2 HDD's in root: /music, /docs, /photos. need to automatically mount HDD1/music to .../music_from_disk_1 and HDD2/music to .../music_from_disk_2 regardless of the number of previously mounted file systems from other devices and from the sequence of connecting the hard disk drives. **detailed:** ------------- i have 2 HDD. UUID HDD1 is 4E1AE and UUID2 is A7B1A. there are /music, /docs, /photos folders exists in root on each HDD. in pc/music i have 2 folders. one for each HDD/music folder : /home/user/Music: ├─music_from_disk_1 └─music_from_disk_2 and the same hierarchy for photos. I need to set everything up so that when the HDD1 is connected, the /music folder from HDD1 is automatically mounted into /home/user/Music/music_from_disk_1. and then i plug in HDD2. /music from HDD2 mounted into /home/user/Music/music_from_disk_2. and for /docs, /photos folders the same way. and no matter what the sequence of connecting the disks and how many other disks and devices I have already mounted. using UUIDs just to avoid confusion. if there are other more convenient options, of course I will use them. it doesn't work for me. maybe I'm misusing it or don't know the additional options: > i know how to mount folder to folder. sudo mount --bind /from /to > and in /etc/fstab wrote /from /to none bind 0 0. so that after > rebooting everything is mounted again. > > it works only when you know where HDD[1|2] is mounted now. > and also know how to mount HDD partition to some folder using UUID: > `/dev/disk/by-uuid/4E1AE /home/user/Music/ auto > nosuid,nodev,nofail,x-gvfs-show 0 0` Gnome Disk Utility wrote it in > /etc/fstab. "Edit Mount Options"->"Automatic Mount Options". > > partition to folder but not folder to folder. if there is no simple solution, can i probably use the bash(or other) script to check the UUID and mount it in the appropriate folders? I don't know how to write it and don't know how to automatically launch script when any device is connected. I also know that there is a way to combine 2 partitions into one when mounting without using raid, but I don't need it. i have Ubuntu 20.04 installed.