On 07/11/2019 16:47, The Natural Philosopher wrote:
> On 07/11/2019 16:06, Areligious Republican wrote:
>> On 07/11/2019 14:10, Kees Nuyt wrote:
>>> On Thu, 7 Nov 2019 13:16:29 +0000, Areligious Republican
>>>  wrote:
>>>
>>>> Perhaps there is a need for a THUNK processor to
>>>> emulate the SD protocol on one side (to replace the
>>>> SD in Pi) and to drive a HD on the other.
>>>>
>>>> Job for an Arduino or a DSPic33?
>>>
>>> Much too complicated.
>>>
>>> As Chris Elvidge says in message:
>>>    Subject: Re: External disk with the pi 4, anyone
>>>    Date: Thu, 7 Nov 2019 13:10:14 +0000
>>>    Message-ID: 
>>> , it is much easier to use the SD card just for /boot,
>>> and put the rootfs on a harddisk
>>>
>>> My setup is usually :
>>>
>> 
>>
>> The idea is to get away from SD cards altogether.
>
> AFAIK the pi cannot boot *entirely* from hard disk.
>
> It needs a boostrap SD card

Pi from 3 is supposed to be able to boot from USB with an updated
setting (add program_usb_boot_mode=1 to the end of /boot/config.txt, and
reboot) but I've never got it to work. YMMV.

>
>>
>> What you contributed subsequently was Linux jabber,
>> and not relevant to other approaches.
>>
> Wrong side of the bed?
>
>



--

Chris Elvidge, England

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