To mount a partition at startup for all users, we need an entry in the fstab file. What is happening presently is, the HDD is getting mounted for the user who logs in which gives access permissions to only that user. By adding an entry in the fstab, the partition will be mounted by root with access to all users. this r/w access can be controlled later on.

sudo blkid lists down all partitions available on your system. Note down the UUID of the NTFS partition that you want to mount at boot. In your case, it seems 00148BDE148BD4D6

now create a folder, for example sudo mkdir /media/ExtHDD01. This is the folder where your external HDD partition will be mounted at. This folder will be owned by root. To give other users permission to r/w into this folder we need to give the proper permissions. so chmod -R 777 /media/ExtHDD01 would be good enough. Now you need to edit your fstab file. to do so, type the following command.

sudo nano /etc/fstab

go to the bottom of the file and add the following line there.

UUID=00148BDE148BD4D6 /media/ExtHDD01/    ntfs-3g        auto,user,rw 0 0

Reboot system and you should be good to go. You can follow the same procedure for any number of HDDs.