Hard link and soft link differ also in that one of them must be on the same logical partition. Do you know about this?

Yes, this is an important distinction between hard links and soft (symbolic) links in file systems.

• Hard link is an additional name for an existing file. It points directly to the file's inode. Because of this, a hard link must be on the same logical partition (volume) as the original file, since the inode is only unique within one partition.

• Soft link (symbolic link) is a separate file containing a path to another file or directory. It can point to a file or directory on another partition or even in another file system.

Attempting to create a hard link to a file on another partition will result in an error. Soft links do not have such restrictions.

Example of creating hard and soft links:

ln original.txt hardlink.txt      # hard link, on the same partition
ln -s /mnt/other_partition/file.txt softlink.txt  # symbolic link, can be on another partition