On or off line ?

[evvivame]

Hi,
Since a few days the disk WDC WD10SDSW-11AGTS0 is half online half offline
Half online: because, as you can see on the desktop.jpg this disk is online (ico=42°)
Half offline: because, as you can see o the same screen, it non appared on the list of the connected devices

From HDS Enterprise this disk show all params except the free%

I also attach the HDS report

p.s. i have already changed the USB port
p.s. system very static !!

Some suggestion?
Thanks
Luciano

[hdsentinel]

Hi !

According the images, the drive is offline: it is not connected to the system. This is why it does not appear in Windows Disk Management.

Generally when a drive disconnected (or inserted) Windows triggers an event about the changed disk configuration. Hard Disk Sentinel detects this notification and automatically updates the list of drives - so then (if things work correctly) we immediately see that a new drive connected / or a previous drive removed.

In some rare cases, Windows may not make this event - so then the drive remains visible for some time (you can see its icon) but if you'd make a manual update (leftmost button in the button bar of Hard Disk Sentinel, showing two arrows) then it will also show that drive #1 is not present.

If the drive is not present (so there is no logical drive associated with it) then the free % space is missing, this is completely normal and expected.


Yes, (especially because it is 2.5" USB drive) I'd say the issue is related to the cables, connections, USB port, passive USB hub (if used) or the external enclosure: so the drive may temporarily disconnects from the system. Yes, I'd say to try different USB port, maybe different USB cable if possible. Front panel USB ports frequently cause similar sudden disconnects of 2.5" USB drives, as they may not provide stable power output / connection.

Interesting is that (by the report you attached) I checked the last detected status and it seems correct: the drive does not show any communication error (199 Ultra ATA CRC Error Count) or unexpected power loss (192 Power off Retract Cycle Count) events.
These attributes frequently count events when there is a sudden power loss / issue with USB cable, connection or so.

If you have the opportunity, I'd recommend to use USB hub with an external power supply: personally I always recommend to use such 2.5" external USB hard disks with USB hub with external power supply to provide enough power and stable connection.

[evvivame]

Hi,
Thank for you answer !!
Update:
1) changed the cable between HDD - USB port : without success
2) as you can see on the attached the WDC WD10SDSW-11AGTS0 is "semi" online (Free%=N/A) in fact the short test, executed today, was succefull (also the the extended test executed 8/3)
3) A new HDD is ready (format,self tests ok) and as is possible i change it

[evvivame]

Hi,
After my last post I replace the HDD (WDC WD10SDSW-11AGTS0) and later run all fine ABOUT this HDD.
But....now the problem occurred on another HDD WDC WD10SDRW-11A0XS1
1) report from HDD Enterprise: see space / space % = N/A

1.jpg (18.33 KiB) Viewed 2714 times

2) report from HDD Client: the HDD WDC WD10SDRW-11A0XS1:see online ...

2.jpg (272.25 KiB) Viewed 2714 times

3) the short test ends successfully: it means it's online?

3.jpg (139.47 KiB) Viewed 2714 times

4) but the HDD isn't available....

4.jpg (95.27 KiB) Viewed 2714 times

5) this is the report:

Hard Disk Sentinel DEBUG Report - Samsung_SSD_870_EVO_500GB.zip

(37.63 KiB) Downloaded 66 times

Notes:
a) no hardware changes since the year 2020
b) no operating system (except windows updates) since year 2020
c) no new user's application

Exotic issue?
If suggestions: thanks very much!
Luciano

[hdsentinel]

> But....now the problem occurred on another HDD WDC WD10SDRW-11A0XS1

Probably the problem is not related to the hard disk drive itself, but something else. First we thought about the USB port / USB controller (or the external box) or some kind of power issue, cable issue or so.


> 1) report from HDD Enterprise: see space / space % = N/A 1.jpg

As you can see, Hard Disk Sentinel Pro (the client) detected the drive, but can't see any partition(s) on the disk drive. You can check the top left area (where you can select the physical disk to be displayed): under "Disco 1" there is no partition (logical drive) listed.
If we have no partition information (no drive letter with used/free space) then of course Hard Disk Sentinel Enterprise Server also can't show the free space information, this is why you see N/A (Not applicable) there...


> 2) report from HDD Client: the HDD WDC WD10SDRW-11A0XS1:see online ...

Yes: the hard disk drive seems working, online.


> 3) the short test ends successfully: it means it's online?

Yes: if the drive can be tested, then it is online.


> 4) but the HDD isn't available....

If the issue is not related to the USB port/cables/connections etc, so we can assume that the hard disk is working, can be tested, you can see that the drive is working (for example you may notice that its temperature changes during the self test) then the issue is not really related to hardware, but

1) maybe there is a disk encryption tool which "hides" the logical drive / partition (and hides the disk drive itself from Windows Disk Management)

or

2) maybe there is a virus/malware which does similar: encrypts the data and hides the original drive similarly

I have no other ideas which could explain the situation...

In Hard Disk Sentinel Pro you can try to open the Disk menu -> Surface test window. Select the drive and click on View to display the surface map (10000 small squares). Then if you click on any of these blocks, you can display the "raw" contents of the sector of the disk drive. You can move with the slider to check/confirm that the sector is readable and verify its contents. If this is working - then you can be sure that the disk drive is generally working, readable (so online).
Maybe please make a screenshot about sector 0 (the very first block) as it contains the Master Boot Record, so it may give some thoughts.

[evvivame]

Hello!

Update: at 11.05.2025 I was in front of this PC:

1) HDD HDD WDC WD10SDRW-11A0XS1,connectedt to 1° expansion Card (PCI-USB.3.0), show the problem as described in my previous post
2) HDD HDD WDC WD10SDRW-11A0XS1,connectedt to 2* expansion Card (PCI-USB.3.0), show the problem as described in my previous post
3) Connect this HDD to default USB 2.0 = situation as above
4) Connect this HDD to default USB 2.0 of an other PC (theoretically same hw/sw configuration): RUN FINE !
5) Connect this HDD to my PC: RUN FINE !
6) Instead WDC WD10SDRW-11A0XS1 , I have connetted HDD WDC WD5000BMVV-11SXZS1 to 1° expansion Card (PCI-USB.3.0): RUN FINE !

Now, connected to my PC, i have deleted (not formatted) all files and next time i try to reconnect to PC in question.....