On 08/11/2019 12:45, Chris Elvidge wrote:
> On 08/11/2019 12:19, RobH wrote:
>> 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.
>
> On the Ubuntu-MATE RPi page:
> Ubuntu MATE 18.04.2 is available for Raspberry Pi Model B 2, 3 and 3+
> with separate images for armhf (ARMv7 32-bit) and arm64 (ARMv8 64-bit).
> We have done what we can to optimise the builds for the Raspberry Pi
> without sacrificing the full desktop environment Ubuntu MATE provides on
> PC.
>
> No mention of Pi4. Pi4 does have different hardware. A special version
> of Raspbian was developed to work on Pi4 - kernel 4.19.
>
>
Yes I agree, it was my error and thought it would work on the pi 4.

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