Roon Core Machine
NUC 8
Networking Gear & Setup Details
BT Smart Home Hub
Connected Audio Devices
ROCK connected to Home Hub by ethernet
Library Size
60,000
Description of Issue
In the middle of downloading a new Roon update this morning the software just froze
On rebooting I receive this message **LDR is missing - I can’t see what the first two letters are because of the screen resolution
Advice please
Hi Ken,
I am moving your post to the Support section where it will be seen. Can you fill out the following information for support.
Thanks!
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Include your operating system and machine info (Model, CPU, RAM)
Your network gear (model of routers/switches) and if on WiFi/Ethernet
Specify what devices you’re using and their connection types, like USB/HDMI/Chromecast, etc.)
Tell us how large your music library is, eg. “30,000 tracks”
Tell us about the problem you’re having in as much detail as possible. Screenshots are always appreciated!
Thanks Rugby
Did I post it in the wrong place?
Roon Core Machine
NUC 8
Networking Gear & Setup Details
BT Smart Home Hub
Connected Audio Devices
ROCK connected to Home Hub by ethernet
Library Size
60,000
Description of Issue
In the middle of updating Roon software it froze
On trying to reboot I get the message
**LDR missing
I don’t know what the missing letters are because of screen resolution
Help Please
Yes, it is easy to do. In your case, the post was in the Uncategorized section which I don’t think support looks at often.
Is it correct that you are talking about updating the Roon software on Windows, and the ***LDR missing happens on Windows reboot, and does it look like this?
I don’t know very much about Windows specifics, but “NTDLR is missing” seems not an uncommon error found on Google. It might well be that the Windows problem occurred first and that it caused the Roon failure. Or the other way around, but my bet would be on a Windows issue
Check here for instance:
Thank you very much S
Now I am a long I am a long way out of my depth here
But that message looks right, however, the ROCK is not using Windows - it’s operating system is Roon software
The image is not on a windows 10 boot screen but the ROCK boot screen
Thanks
sounds like its maybe trying to boot off the external USB - assuming you have one unlpug it and try again
Ah. I know what Rock is and that you are using it, but your description was just that Roon updated and there was an error in rebooting. I wasn’t sure what you were updating and rebooting, could have been the Roon remote on Windows.
In this case, @wizardofoz is probably right, and it’s in fact the same issue as is described on the links for Windows as well (one of them) - external USB plugged in and it’s trying to boot from that. Unplug it and try again
Thank you both so much for your advice
I unplugged my external drive and it has booted up fine 
Never had that issue before
Good to see that there are much cleverer people on here than me (although that’s not saying much)
Thanks and best wishes to you both
Fabulous, enjoy
Well don!
I don’t know why this suddenly impacted you - it might be related to the latest ROCK change that introduced UEFI support. In any case, your NUC’s boot order may be configured to boot from external drives (or your specific external drive) before your primary SSD. Adjusting this setting is reasonably straightforward by entering your NUC’s BIOS at boot time and changing boot order settings. If you’ve never done anything like this before it can be a bit intimidating but you might need to do it in order to be able to boot with your drive attached.
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