[SOLVED] USB sources not loading

[spiros79]

Could it be that they are simply recognised but there is not enough power to scan them and mount them

This. "one port for the pi , two for the sticks and one for a usb DAC " 
You are powering the Pi from an unpowered hub ?

No, my mistake . The pi uses official 3b power supply . The hub plugs into one of the two pi zero usb ports  and  provides 4 ports . I use one to connect and power an UCA 202 dac , and two slots fot usb sticks . 

Try a test with just one USB drive plugged into the hub. Reboot and see if its auto-mounted.

Both sticks off :
spiros@moode:~ $ lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
mmcblk0     179:0    0 116.5G  0 disk
├─mmcblk0p1 179:1    0   256M  0 part /boot
└─mmcblk0p2 179:2    0 116.2G  0 part /

First stick in (adapter with SD card) : 

spiros@moode:~ $ lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda           8:0    1  58.2G  0 disk
└─sda1        8:1    1  58.2G  0 part
mmcblk0     179:0    0 116.5G  0 disk
├─mmcblk0p1 179:1    0   256M  0 part /boot
└─mmcblk0p2 179:2    0 116.2G  0 part /
I also get an empty USB directory in the Library after update 

First stick out , second stick in  (kingston 128GB) in another port ( I noticed that whenever I plug in a stick the led flashes and I loose the ssh connection . So I guess it reboots  ?) 

NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda           8:0    1 115.6G  0 disk
└─sda1        8:1    1 115.5G  0 part
mmcblk0     179:0    0 116.5G  0 disk
├─mmcblk0p1 179:1    0   256M  0 part /boot
└─mmcblk0p2 179:2    0 116.2G  0 part /

I take out the hub and plug in his place the kingston stick . Reboots again :

spiros@moode:~ $ lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda           8:0    1 115.6G  0 disk
└─sda1        8:1    1 115.5G  0 part
mmcblk0     179:0    0 116.5G  0 disk
├─mmcblk0p1 179:1    0   256M  0 part /boot
└─mmcblk0p2 179:2    0 116.2G  0 part /

So even with a single usb stick attached , although recognized it  isn't auto mounted . Funny thing is that with a previous installation both sticks worked flawlessly  and their content made it to the Library . But having a spare 256GB  sd card   I thought of reinstalling and use the spare space to store music files . And after that I got to have the extra sd space but mysteriously  I lost the sticks . I also  couldn't connect external HDD drives , although with their own power supply , but those devices never appeared after /lsblk . 

I know the pi zero is the least suitable pi for moode . But , since it's available why not give it a try ? 
Thanks