I’m having a recurring issue with my SanDisk Extreme Portable SSD 2 TB (model SDSSDE61-2T00, V2) connected to my ZimaBoard 2 running ZimaOS 1.5.1.
It mounts normally and works for small transfers, but keeps disconnecting during large data copies or backups. The transfer stops midway, and the SSD disappears from the system until I reconnect it (sometimes even requires a reboot).
Setup
Device: ZimaBoard 2 (832 model)
OS: ZimaOS 1.5.1 (clean install)
Drive: SanDisk Extreme Portable SSD V2 2 TB (SDSSDE61-2T00)
Connection: USB-C (original short cable)
Power: Official ZimaBoard PSU
Other devices: None on USB
What I’ve tried
Switched between both USB ports
Different USB-C to A and C to C cables
Verified drive health and firmware on another computer (works fine under macOS and Windows)
I believe your SanDisk Extreme is behaving normally during light activity, but the disconnects during larger transfers suggest a power-stability or USB-controller issue, rather than a faulty SSD.
These SanDisk Extreme models (E61 / E81) are known to draw brief power spikes under heavy write loads. I think the ZimaBoard 2 USB ports may not always deliver fully stable power during sustained transfers, so the controller drops out. When this happens, ZimaOS unregisters the disk, which is why it disappears and sometimes only comes back after a reboot.
Even though it works under macOS/Windows, Linux can be more sensitive to these brief power dips. A small number of the V2 units also have a history of intermittent instability, even after firmware updates, so that may still be contributing.
When the disconnect happens, could you please share the USB log output so we can confirm what the controller is reporting?
dmesg -w
So the key is:
Start dmesg -w
Begin the large transfer
Wait for the failure
Copy the terminal output that appears at the moment of disconnect
Reboot if needed
This will help pinpoint whether the issue is power-related, controller-related, or something else.
Thanks for sharing the logs. What I see here is a clean USB disconnect at the controller level, not a file-system or SSD failure.
The key lines are:
xhci_hcd: Timeout while waiting for setup device command usb 2-3: device not accepting address, error -62 usb2-port3: power cycle / unable to enumerate
These messages show that the USB link drops completely during the heavy write, and the controller keeps trying to re-initialise the device. The exFAT errors at the top are simply a side-effect of the drive going offline mid-write.
I believe this explains the behaviour you’re seeing, and I think it confirms the issue is happening at the USB communication layer rather than the SSD itself.
To be sure, I suggest sharing these log lines with IceWhale Support, so they can confirm the exact cause and guide you from their side.