I had some USB stick issues with my innitial build but then swapped to a new samsung USB stick and was all ok until a few days ago.

 

On system reboot I'm sometimes getting similar behaviour of where sometimes the usb stick is unrecognised by either the bios or will sometimes partial boot unraid but then hang at "Unable to enumerate USB device" 

 

Not sure if those are the same issue or 2 separate issues?

 

It's like it doesn't always recognise the USB stick. I have to remove the drive boot up with no usb stick power down then boot up again. Usually 2 or 3 times...

 

I'm using a a geuine "Samsung BAR Plus 32 GB Type-A 200 MB/s USB 3.1 Flash Drive Champagne Silver (MUF-32BE3)"

https://www.amazon.co.uk/gp/product/B07CV9KCPN/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

 

Which is reccomended by spaceinvader.

 

Also happen to be on 2nd motherboard as wanted better PCIe layout.

 

Only thing I can think of is maybe there's some odd USB power setting?

 

Does unraid have a list of officially tested sticks?

 

Or is it perhaps a problem related to the UPS's usb plug?

 

Not sure why that would cause the system to hang but there it is...

 

Once I get it to boot will post up some diagnostics.

 

Thanks

 

I'm on unraid 6.10.3

 

Motherboard: MSI MAG B560M MORTAR WIFI Gaming Motherboard, M-ATX

CPU: Intel i9-11900T (11th gen)

RAM: 32GB (4x 8GB)

GPU: Nvidia RTX A2000 6GB

PCIe: Expansion Card for ASMedia ASM1166 Master, PCI‑E to 6‑Port SATA3.0 Hard Disk, 6G ASM1166 Master GEN3 1 x Interface

Array: 12TB parity + 12TB disk 1 (XFS)

Cache: 2TB NVMe SSD x2 (BTRFS)

Cache2: 2TB Sata SSD x2  (BTRFS)

Case: Inovision NAS 8 bay case

PSU: Inovision 600w

Fans: Noctua fans

CPU Cooler: Noctua NH-L12S low profile

UPS: APC BK500ei 300w (UK version) with USB to RJ50 Data Cable

 

 

 

Edited September 22, 20223 yr by dopeytree

11 minutes ago, dopeytree said:

sometimes the usb stick is unrecognised by either the bios

Sounds like it's a bad stick.  If the BIOS can't see it, then nothing Unraid can do about it.  Replace it https://wiki.unraid.net/Manual/Changing_The_Flash_Device

Thanks - what ever it is it is inconsitent. Sometimes the pause is at bios sometimes halfway through unraid's loading...

 

Would you mind sharing which stick you personally use? and is it USB2 rather than USB3?

Edited September 22, 20223 yr by dopeytree

USB2 port is more reliable

On 9/22/2022 at 5:18 PM, dopeytree said:

Which is reccomended by spaceinvader.

It seems at the time of the review, spaceinvader wasn't quite aware of the USB 2 vs 3 situation as related to Unraid.

Sadly the test hasn't been updated since then.

3 hours ago, Lolight said:

It seems at the time of the review, spaceinvader wasn't quite aware of the USB 2 vs 3 situation as related to Unraid.

 

It's not Unraid per se, but the manufacturers of motherboards and devices themselves.

 

The timings etc on USB3 are more strict than on USB2 so the motherboards and devices (in particular) need to be higher quality.  Flash drives as an example are manufactured with the expectation that they will be lost.  If the manufacturer can save 1/10th of a cent on every stick made by substituting a different capacitor that *technically* hits the tolerances but may quickly degrade then it adds up to significant profit.

 

Lower tolerances = higher reliability.  Higher tolerances = lower reliability.  Q.E.D.

Thanks team. The error went away but does present itself every 4th / 5th bootup which is more often at the moment while I setup the system.

 

Managed to pickup 2x small usb2 drives so will in the future get them copied over - I've already swapped once so will have to email support for a swap.

 

At some point it will become hard to obtain usb2 drives - wonder what the future plan is?

 

Perhaps a tiny sata SSD 50GB or so (like in pfSense systems) but connected via USB?

Edited September 28, 20223 yr by dopeytree

19 hours ago, Squid said:

The timings etc on USB3 are more strict than on USB2 so the motherboards and devices (in particular) need to be higher quality.

I've used a utility named UsbTreeView to compare my Kingston DataTraveler (by Shenzhen ...) against Sandisk Cruiser Fit. https://github.com/MarkoMarjamaa/UsbTreeView

To my surprise I've found a big difference in the Demanded Current metric.

Have no idea what that means.

I've also noticed a big performance difference: Kingston is about twice as fast at writing.

 

P.S. found a site talking about demanded current:

"The first category is a USB device which draws 100 mA or less. This sort of device needs no switching because every device is allowed 100 mA as soon as it is plugged in. There used to be a rule that when the USB device was put to sleep, it would have to reduce its current below 100 mA, but so many devices failed to implement this correctly that USB 2 relaxed the rules significantly."

http://dangerousprototypes.com/docs/Designing_USB_Devices_for_proper_current_and_MaxPower

 

Makes me wonder... If the drive's elevated current consumption (by design), combined with a failure to switch into the sleep mode is what makes USB drives fail prematurely.

 

Edited September 29, 20223 yr by Lolight

Anyone have an idea on support turn around time for a new key?

 

I've already used the automatic replace key so am now onto 3rd usb stick.

This time it's a usb2 key.

 

Edited October 1, 20223 yr by dopeytree

How do I find out the GUID of a stick that can't boot unraid?

I'm on mac and can find it's serial no but I don't think that's the GUID.

 

I can boot up to find the new GUID on a new stick but I need the old one to help speed up getting a new key...

Also I have access to server but no array, dockers VM's etc as stuck waiting for new key... manual mentions about setting up a trial... but which files would I copy over to get access to my old server.. a blanket new trial wont have my apps or share info...

 

I.E which bit on the stick relates to the trial key and which bits can I just copy over from my USB backup..

 

Thanks.

Edited October 1, 20223 yr by dopeytree

I'm having the same issue now and I also have a Samsung 32gb usb stick. 

After each restart I have to take the usb stick out of the port and plug it into another port. Then boot into bios, change the boot priority and then it should work, but just now even that failed. 

Let us know how you get on with the new stick

Edited October 5, 20223 yr by bowets

Funny isn't it.. I went with samsung as they make most memory chips so thought they should be good but....

 

Happy to say I haven't had any issues since swapping to a USB 2 stick!

 

Support was pretty quick to reply with a new liscence code. A few hours. BUT if you're on your 2nd stick in a year you can do it all automatically yourself.

 

Am now using this: SanDisk Cruzer Fit 32GB USB 2.0 Flash Drive,Black

£7.99 https://www.amazon.co.uk/gp/product/B07MPCJDXS/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1

 

Haven't had any of those issues since.

Although it is sandisk (some say to avoid that brand as lots of fakes out there) as it is usb2 I think it should be ok.

 

Something did cause the system to lock up overnight but think that might have been a mixture of my PFsense router (firewall) crashing as trying out some new packet sniffing tools.

 

Unraid has been running pretty solid for 30days or so. 

 

I did swap the motherboard over but that was to fix the crappy PCIe layout on the gigabyte board.

I still had issues with USB boot with the samsung stick on the new MSI board.

 

It averages around 90watts for 2x 12tb drives, 2x 2tb nvmes & 2x 2tb sata SSDs.

I have another 2x 12tb drives ready to go as needed.

Edited October 5, 20223 yr by dopeytree

I have the same problem with the Samsung BAR Plus 32 GB. Often Unraid fails on booting after shutdown or reboot.

 

I am using this stick in 4 different machines (bought at different times) as it had good test results in @SpaceInvaderOne's video. So far I am only having problems with 1 stick – so it might also be a weird stick failure.

 

Anyway, I will now also try the SanDisk Cruzer Fit 32GB USB 2.0.

It's probably the usb stick but do also make sure to turn off fast booting in bios. I have found that sometimes stop a restart happening the screen is just black.

 

I'm now using an ATP usb stick: https://uk.rs-online.com/web/c/computing-peripherals/memory-data-storage/usb-sticks/?applied-dimensions=4294342949

Edited January 26, 20233 yr by dopeytree

Did you have problems with the SanDisk Cruzer Fit or why did you switch to ATP?

Yeah I started to get those .fsk errors (the files appear on the USB stick) which means usb corruption. I also changed my ram. The ram said it was ok in memtest but quite a few people say it pases the test but can still cause issues. 

 

Between changing the USB stick & RAM I have a stable system again. 

Edited January 30, 20233 yr by dopeytree

I just had the same thing with the Samsung USB-Stick Typ-A BAR Plus. It seems to be related to USB 3.0 indeed as mentioned before, the fsck.fat fails whenever it is plugged in to any USB 3.0 Ports. After plugging it in to a USB 2.0 port it would boot everytime. 

 

I have also disabled fastboot in the BIOS settings. 

 

Hope that helps someone in here that has similar problems. 

I just stumbled onto this thread when my Samsung Bar Plus started failing to start Unraid. I initially thought I had too many USB devices plugged in (boot drive, keyboard fob, UPS control) but it seems to be the USB drive's fault. Now I need to go hunt down a USB2 drive and swap the key over. 

 

What's the teams long term goals for this issue as USB2 drives become harder to find? Boot from a cache ssd?

I have been having the same issue with a SAMSUNG FIT Plus.

The only way I can fix it is to move the USB stick to a different port which means I need to always be next to the server, which defeats the purpose of having a server.

I asked in discord and they kept telling me it is my hardware, their software is fine.

If my hardware is the problem, what hardware is your OS is supporting? Where can I find a list of supported motherboards, processors, hard drives etc?

I am in the same boat as everybody above, guys from team should have a look and at least communicate with users to NOT USE Samsung usb sticks.

I have Samsung Bar 64GB bought directly from samsung store, no chance for counterfeit etc.

And I am seeing exactly same behaviour as above, same errors after restarts, sometimes I am able to restart unraid server 2-3 times without any issues, but then good luck, and the only way to fix it is to move it from port to port, shame that have my usb slot inside the case... Which cause a lot of headache. Anyway today is the last day on the stick as I am moving into card reader and proper card.

Motherboard is Z790 Tomahawk with latest bios but, maybe previous users can share their setup so we can see if there is really problem with the stick or rather stick + mobo combination?

On 9/22/2022 at 6:18 AM, dopeytree said:

e to enumerate USB devi

I have the same issue with multiple samsung bar usb drives now

same issue with brand new samsung bar plus 64gb

Edited October 21, 2025Oct 21 by sage2050

Also the same issue with a Samsung Bar 64gb.