I have a Pi3 with a Sabrient USB-SSD Adapter. The disk works fine and can be mounted. However, when I try to use it as a boot disk, it works only intermittently. Most of the time, there seems to be a timing problem with detecting the disk - in that case the blue LED on the adapter lights up briefly then nothing happens and the LED is off.

Some of the time - say on in fifteen times - the boot process detects the USB drive and boots up fine.

Any idea on how to make this detection more reliable ?

My Pi: model name : ARMv7 Processor rev 4 (v7l)

Many thanks

  • I'm surprised it works at all - Every Sabrent USB adapter I've ever tried simply fails to be a boot device - even on a PC it fails - what is the VID/PID of that particular adapter
    – Bravo
    Jan 14 at 0:16
  • Bus 001 Device 004: ID 152d:1561 JMicron Technology Corp. / JMicron USA Technology Corp. JMS561U two ports SATA 6Gb/s bridge Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.10 bDeviceClass 0 bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x152d JMicron Technology Corp. / JMicron USA Technology Corp. idProduct 0x1561 JMS561U two ports SATA 6Gb/s bridge bcdDevice 2.04 iManufacturer 1 SABRENT iProduct 2 SABRENT Jan 16 at 14:43
  • BTW it boots fine on a Pi4, so it is definitely a firmware/software issue, Jan 16 at 14:51
  • I wouldn't use sabrent products even if they paid me - so -
    – Bravo
    Jan 17 at 6:51
  • Ok, any suggestions for a better alternative based on your experience ? Jan 19 at 14:37


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