Which then would bring us back to the second half of my post above about possible fakes and scams. You did not post information that would allow anyone here to make an educated guess about if the drive might be the issue (not actually 5TB big). I, in your shoes, would now boot a standard Linux distribution from an USB Thumb-drive and look at the contents of the two disks. From the top of my head, I would try GParted or the Ubuntu (desktop) installer. To boot from a stick you may have to interact with the Nucleus BIOS during startup. There is often a specific key one can use to temporarily change another than the default boot drive. As I’m not a Nucleus user though, I don’t know the key.
If you can look at the two disk from a standard Linux it should be easy to see where the data went you would also be able to inspect the drives (reported size, partitioning, filesystem, health, …).
Thank you most kindly, @Geoff_Coupe - I think I’ve found my problem by visiting the Web Administration Interface page. Looking at the page, I see the following:
Note that the “Internal Music Storage” tab, rather than showing the 5TB internal drive of the Nucleus One, is instead showing the internal disk of the Mac mini. This is confusing because if I format, it is not the Apple disk that is formatted, but rather the Nucleus One’s internal disk. When I transfer files, they don’t go to the Apple disk, but rather to the Nucleus One’s internal disk.
Perhaps since the Apple disk is only 1TB, that’s how much space I get on the InternalStorage folder on the Nucleus One? In any case, it seems obvious that the Nucleus One is NOT correctly identifying the 5TB HDD as actual internal storage.
Very weird - never seen that error before. Perhaps it would be a good idea to start over by a) reinstalling the Roon Operating System and b) resetting the Roon Database and settings to the factory defaults?
Thanks, I’ve both reinstalled the Roon OS and returned DB / settings to factory defaults. Same issue.
My best guess is that the internal drive has just caused Roon to enter the Twilight Zone, and that until I either remove the drive entirely or replace the drive with one that Roon can correctly recognize, my problems will persist.
Oh well…
It is usually the device that self-declares its properties like name size, etc. HTS541 is a Hitachi Travel Star as far as I could figure out there was/is a 640GB and a 1TB version availiable – pretty much matches. I doubt you’ll find anything different from what the disk itself told Roon OS she is inside your Nucleus when opening it.
Hi @BlackJack -
As you are not a Nucleus user, I am not a Linux user. I do NOT want to “interact with the Nucleus BIOS.” If I foul up the BIOS settings, my Nucleus may become totally dysfunctional and I’ll be out the $$$ I spent for it. I want to tell time - you’re proposing I learn to build clocks.
I appreciate your input, but I don’t think these specific suggestions are the route I want to take. If I accept the premise that the (incorrectly-recognized) 5TB HDD is the root of my problems, then replacing that drive with one that IS recognized by the Nucleus’ BIOS may cure those problems.
The prices for 4TB SSDs have fallen greatly and I just ordered a 4TB SSD from Amazon for about $150. This IS within the range recommended by the Nucleus manual, and I’m hoping that it will cure all issues.
The BIOS (and indeed RoonOs) is most likely correctly identifying the hard disk that you have installed.
If what you see in the Roon WebUI is not what you expect to see, then it is likely that the hard disk is not what it purports to be.
As has been suggested earlier in the thread, it seems possible, or even probable, that you have been sold a fake 5TB HDD which is actually a 1TB Hitachi disk.
If you want to confirm/refute this independently of Roon/RoonOS, and you don’t want to mess around with the Nucleus BIOS in order to boot from a USB stick, you could remove the disk from the Nucleus and put it in a suitable USB caddy and then connect it to your Mac and then see how that identifies the disk. If the Mac also identifies it as a 1TB disk, then you have your answer.
I took a quick look at trusted shops here and I don’t see how to get a genuine 4TB SSD 2.5" drive from a reputable brand for $150 USD. So take care as it seems to me you wade in the depths of fake and scam products, scrap ware sales and very low quality products in general.
PS: I’m happy if someone corrects me on this and I’m wrong.
More like US$250
Can you give a link to that drive I’d like to see it. I’ve looked and I haven’t seen a 4 TB SSD by a trusted manufacturer that isn’t in the mid- 200s on Amazon.
I would suggest instead a 4TB WD USB external drive for ~130 USD. Format it exFAT on another PC, copy all the music files to it on that PC, then just move it over to the Nucleus. That way you will also have someplace for Roon Database backups to go. It is the easiest, quickest and least fiddly option, again, IMHO.
I misspoke. The WD 4TB SSD (from the WD store on Amazon) was $239
And you guys are RIGHT! That 2.5" drive (labeled HGST-5TB) IS actually only a 1TB. When I hooked it up to my Mac & reformatted it, the Apple Disk Utility identified it as a 1TB drive. It’s been a LONG time since I bought that drive, and I can’t even count the hours I’ve spent fighting it, trying to get more data onto it. Oh well…
I’ve just installed the WD 4TB SSD in the Nucleus One. I also connected the Mac mini and the Nucleus One through a switch rather than the router. And?
Although the SSD & gigabit switch connection are notably faster than going through the router, it’s still SLOW at file transfer. But since I only need to write the data once and read it many times for music playback, it’s all good!
Hi @Glenn_Young ,
Glad to hear you were able to get the 4TB drive installed and things are working now for you. I’ll go ahead and mark this one as solved, happy listening! 
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