Re: USB disks on RPI3?

[Alan Corey <alan01346%gmail.com@localhost>]

I'm doing it in Linux with no problem, you could try a different SD to
check your hardware.  The last line in your output I don't know about.
I have a StarTech housing/adapter with a WD 270 GB laptop drive I
stuck in it.

A few things I had to do:

Change your /etc/fstab so it refers to the partitions in their proper
place, like for Linux /dev/sda1 is boot instead of /dev/mmcblk0p1
(the one on the hard drive, not the one on the SD).  I had copied a
working SD to the hard drive with piclone.
https://github.com/raspberrypi-ui/piclone

In /boot/cmdline.txt (if netbsd uses one) replace root=/dev/mmcblk0p2
with root=/dev/sda2

The Pi has a one-time switch (boot with this once and you can comment
it back out) to enable USB boot, put this in your /boot/config.txt:
program_usb_boot_mode=1

Check with vcgencmd otp_dump | grep 17: should see
17:3020000a (tests that usb_mode programmed correctly)

It comes up, there's a delay of a couple seconds, then the drive light
for the hard drive starts blinking, then the Raspberry Pi splash
screen followed by boot-up chatter.  I've been running it like this
for a few (6?) months.



On 11/10/17, Greg Troxel <gdt%lexort.com@localhost> wrote:
>
> I have a RPI3 running netbsd-8, built with -m earmv6hf-el (so userland
> would work on a RPI1 also), and it is otherwise ok.  I have a rosewill
> USB case which has a a 750G disk, and I've been using it for a long time
> with no issues.  I plugged it into the RPI3, and got:
>
>
> umass0: at uhub1 port 2 (addr 4) disconnected
> umass0 at uhub1 port 4 configuration 1 interface 0
> umass0: JMicron (0x152d) JM20336 SATA, USB Combo (0x2336), rev 2.00/1.00,
> addr 4
> umass0: using SCSI over Bulk-Only
> umass0: failed to create xfers
>
> and am wondering if my disk is odd, or if my PI is troubled, or if there
> are usually issues, or something else.
>


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