After integration of the HDD 2 missing folders

Hello There,
I had to reinstall unfortunately after a system crash OMV. This has also so far works.
now I have integrated the data disks. Unfortunately, I lack a 2 folder is called ISO.
All other data is available, I think that my 2 folders or are simply not displayed I have to restore.
but how?
The HDD is a format ext4

Greeting SC2

root@omv:~# ls -al
insgesamt 28
drwx------ 3 root root 4096 Jul 13 20:58 .
drwxr-xr-x 24 root root 4096 Jul 13 19:35 ..
-rw------- 1 root root 637 Jul 14 23:22 .bash_history
-rw-r--r-- 1 root root 570 Jan 31 2010 .bashrc
-rw-r--r-- 1 root root 134 Jul 13 19:39 .inputrc
-rw-r--r-- 1 root root 140 Nov 19 2007 .profile
drwx------ 2 root root 4096 Jul 13 19:39 .ssh

Thank you for your helpWastlJ
I have so got it up yourself
with the command ls -al / media / * /

many thanks