On 08/11/2019 11:24, RobH wrote:
> On 08/11/2019 11:03, Chris Elvidge wrote:
>> On 08/11/2019 10:29, RobH wrote:
>>> On 08/11/2019 09:07, Mark J wrote:
>>>> In message 
>>>>            Chris Elvidge  wrote:
>>>>
>>>>> On 07/11/2019 12:52, RobH wrote:
>>>>>> I'm having a hard time finding the information I want , so I ask
>>>>>> here:
>>>>>>
>>>>>> Has anyone had success using an external disk with the pi 4, and
>>>>>> preferably booting from it.
>>>>>>
>>>>>> The other option I thought about was to put some other version of
>>>>>> Linux
>>>>>> on it, ubuntu?, but using etcher in linux doesn't do it, as it's
>>>>>> an iso.
>>>>>>
>>>>>> Thanks
>>>>
>>>>> Not a Pi4 but I have Pi3+s booting from SD card (holding only the
>>>>> /boot
>>>>> partition) and 128/256Gb SSD (mSATA in mSATA to USB3 adapter) as root.
>>>>> Quite easy if you follow the instructions.
>>>>> I never had much luck booting directly from the USB SSD, hence the
>>>>> above
>>>>> arrangement.
>>>>
>>>> - but I, with an SSD and RPi3B+, via a mSATA to USB adapter, simply
>>>> 'burnt' the SSD with UbuntuMATE as if it were an SD card, and it all
>>>> works
>>>> without the card installed. /With/ the card installed, the beast boots
>>>> from the card with the SSD still plugged in.
>>>>
>>>>
>>
>> As I said above, I've never got this to work. Seems (from some
>> reading) some USB devices don't work easily. I gave up and used the SD
>> card to boot, USB to run.
>>
>>>
>>> An unrelated question:
>>> How did you get Ubuntu mate installed, as In tried and it didn't work.
>>> I downloaded the tar.gz file, then extracted the img file and the
>>> tried to burn it to an sd card with etcher. Etcher complained that it
>>> was not a bootable image. I tried again by clicking on the tar.gz
>>> file and Discs came up and said something about doing a restore. I
>>> selected the sdcard and clicked restore, but after inserting the
>>> sdcard into the pi, it didn't boot up.
>>
>> Use dd to get the image onto the USB device on a Linux box.
>>
>> dd if=imagefile of=/dev/sd? bs=4M status=progress
>>
>> Windows: see here
>>
https://www.raspberrypi.org/documentation/installation/installing-images/window
s.md
>>
>> I haven't tried this!!
>> YMMV
>>
>>
>
> Thanks for that, but although the img appears to be booting, as the
> green led is flashing on the pi4, there is no video, aaargh!
>
> What have I missed.

After I was under the impression ubuntu-mate would work with the pi 4, I
have found out that it doesn't, only for pi 1,2 3 and 3b etc.

I do have a Pi 3 here but it is use as a security monitor with a
day/night camera.

Thanks anyway.

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