Replace my USB HDD by USB SSD not work

Volumio Information

Volumio Version: v2.917
Hardware: Raspberry Pi 2 Model B Rev 1.1
DAC: Schiit

I have an USB HDD Toshiba DTB310, formatted in Ext4 with all my music in Music folder.
To view it on volumio, I create a symlink as this :
sudo ln -s /media/ToshibaExt/Music/ /mnt/USB

I want to replace it because of strange mechanical noises on it.
I bought a Samsung T7 SSD. I formatted in Ext4 and copy music folder on it.
I replace symlink as this:
sudo unlink /mnt/USB
sudo ln -s /media/samsung1TO/Music/ /mnt/USB

When I replace my HDD by SSD, Volumio dont see it.

Symlink and mount seems good:

HDD:

volumio@volumio:~$ ll /mnt/ 
total 8
drwxrwxrwx 1 root root 4096 Oct 23 08:57 .
drwxrwxrwx 1 root root 4096 Oct  1  2019 ..
lrwxrwxrwx 1 root root   14 Oct  6 10:34 INTERNAL -> /data/INTERNAL
drwxrwxrwx 2 root root    3 Oct  6 10:34 NAS
drwxrwxrwx 2 root root    3 Oct  6 10:34 UPNP
lrwxrwxrwx 1 root root   24 Oct 23 08:57 USB -> /media/ToshibaExt/Music/
volumio@volumio:~$ ll /mnt/USB
lrwxrwxrwx 1 root root 24 Oct 23 08:57 /mnt/USB -> /media/ToshibaExt/Music/
volumio@volumio:~$ ll /mnt/USB/
total 440
drwxrwxr-x 110 volumio volumio 4096 Jun 16 07:50 .
drwxrwxr-x   9 volumio volumio 4096 Oct 20 15:34 ..
drwxrwxr-x   3 volumio volumio 4096 Jun 30  2016 2 Many DJ's
...

SSD:

volumio@volumio:~$ ll /mnt/
total 8
drwxrwxrwx 1 root root 4096 Oct 24 08:41 .
drwxrwxrwx 1 root root 4096 Oct  1  2019 ..
lrwxrwxrwx 1 root root   14 Oct  6 10:34 INTERNAL -> /data/INTERNAL
drwxrwxrwx 2 root root    3 Oct  6 10:34 NAS
drwxrwxrwx 2 root root    3 Oct  6 10:34 UPNP
lrwxrwxrwx 1 root root   24 Oct 24 08:41 USB -> /media/samsung1TO/Music/
volumio@volumio:~$ ll /mnt/USB
lrwxrwxrwx 1 root root 24 Oct 24 08:41 /mnt/USB -> /media/samsung1TO/Music/
volumio@volumio:~$ ll /mnt/USB/
total 440
drwxrwxr-x 110 volumio volumio 4096 Jun 16 07:50 .
drwx------   8 volumio volumio 4096 Oct 20 16:08 ..
drwxrwxr-x   3 volumio volumio 4096 Jun 30  2016 2 Many DJ's

...

When I plug HDD:

volumio@volumio:~$ cat /var/log/mpd.log 
Oct 24 09:12 : client: [3] opened from local
Oct 24 09:12 : client: [4] opened from local
Oct 24 09:12 : exception: Failed to access /var/lib/mpd/music/USB: Permission denied
Oct 24 09:12 : client: [3] closed
Oct 24 09:12 : exception: Failed to access /var/lib/mpd/music/USB: Permission denied
Oct 24 09:12 : client: [4] closed
Oct 24 09:12 : client: [5] opened from local
Oct 24 09:12 : client: [5] closed
Oct 24 09:12 : update: added USB/Daft Punk/Alive 2007/01 - Robot Rock _ Oh Yeah.mp3

dmesg
[  459.654954] usb 1-1.2: USB disconnect, device number 6
[  459.656340] print_req_error: I/O error, dev sda, sector 0
[  459.664253] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[  459.664431] sd 0:0:0:0: [sda] Synchronize Cache(10) failed: Result: hostbyte=0x01 driverbyte=0x00
[  463.997401] Under-voltage detected! (0x00050005)
[  464.297287] usb 1-1.2: new high-speed USB device number 7 using dwc_otg
[  464.429502] usb 1-1.2: New USB device found, idVendor=0480, idProduct=a200, bcdDevice= 0.00
[  464.429521] usb 1-1.2: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[  464.429533] usb 1-1.2: Product: External USB 3.0
[  464.429544] usb 1-1.2: Manufacturer: TOSHIBA
[  464.429555] usb 1-1.2: SerialNumber: 20150901016626F
[  464.430716] usb-storage 1-1.2:1.0: USB Mass Storage device detected
[  464.432406] scsi host0: usb-storage 1-1.2:1.0
[  465.438596] scsi 0:0:0:0: Direct-Access     TOSHIBA  External USB 3.0 0    PQ: 0 ANSI: 6
[  465.440168] sd 0:0:0:0: Attached scsi generic sg0 type 0
[  467.285160] sd 0:0:0:0: [sda] 1953525168 512-byte logical blocks: (1.00 TB/932 GiB)
[  467.285805] sd 0:0:0:0: [sda] Write Protect is off
[  467.285818] sd 0:0:0:0: [sda] Mode Sense: 43 00 00 00
[  467.287930] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[  467.302718]  sda: sda1
[  467.305976] sd 0:0:0:0: [sda] Attached SCSI disk
[  467.903189] EXT4-fs (sda1): warning: mounting fs with errors, running e2fsck is recommended
[  467.973599] EXT4-fs (sda1): recovery complete
[  467.973716] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[  470.237327] Voltage normalised (0x00000000)

...

When I plug SSD:

volumio@volumio:~$ cat /var/log/mpd.log 
Oct 23 22:35 : zeroconf: No global port, disabling zeroconf
Oct 23 22:35 : client: [0] opened from local
Oct 24 08:38 : client: [0] closed
Oct 24 08:38 : client: [1] opened from local
Oct 24 08:38 : client: [2] opened from 127.0.0.1:36898
Oct 24 08:41 : client: [3] opened from local
Oct 24 08:41 : client: [3] closed
Oct 24 08:41 : exception: Failed to access /var/lib/mpd/music/USB: No such file or directory
Oct 24 08:41 : update: removing USB/Amadou & Mariam/Folila/04 - Metemya.mp3

dmesg
[  262.057927] usb 1-1.2: new high-speed USB device number 6 using dwc_otg
[  262.189587] usb 1-1.2: New USB device found, idVendor=04e8, idProduct=4001, bcdDevice= 1.00
[  262.189606] usb 1-1.2: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[  262.189614] usb 1-1.2: Product: PSSD T7
[  262.189621] usb 1-1.2: Manufacturer: Samsung
[  262.189629] usb 1-1.2: SerialNumber: S6TWNJ0R904802X
[  262.192123] usb 1-1.2: The driver for the USB controller dwc_otg_hcd does not support scatter-gather which is
[  262.192138] usb 1-1.2: required by the UAS driver. Please try an other USB controller if you wish to use UAS.
[  262.192148] usb-storage 1-1.2:1.0: USB Mass Storage device detected
[  262.193092] scsi host0: usb-storage 1-1.2:1.0
[  263.204197] scsi 0:0:0:0: Direct-Access     Samsung  PSSD T7          0    PQ: 0 ANSI: 6
[  263.205245] sd 0:0:0:0: Attached scsi generic sg0 type 0
[  263.206622] sd 0:0:0:0: [sda] 1953525168 512-byte logical blocks: (1.00 TB/932 GiB)
[  263.207227] sd 0:0:0:0: [sda] Write Protect is off
[  263.207247] sd 0:0:0:0: [sda] Mode Sense: 43 00 00 00
[  263.208102] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[  263.218284]  sda: sda1
[  263.222991] sd 0:0:0:0: [sda] Attached SCSI disk
[  263.804864] EXT4-fs (sda1): recovery complete
[  263.804899] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)

do you use a external powered hub?

No I dont use external powered hub.

As you can see in logs “Under-voltage detected!” warning is for my HDD which works great with volumio.
I dont have there warning when I plug SSD, which dont work

i would try a external hub and put it on usb 3.0

Try stronger power supply - 20 watts should be enough (5v and 4amps). Some SSDs actually require more power than their mechanical counterparts and unless your powersupply is strong enough, RPI will not mount it and volumio will not see it.

Also note, that in case you are using an unpartitioned disk (no partition table), the disk won’t be mounted either! Some disks are preformatted like that.

When formatting the drive, I have the best experience with NTFS file system. It works flawlessly with Volumio and it also is visible as network drive, so one does not have to pull it out when adding new music.