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On 09/12/2025 20:54, bp@www.zefox.net wrote:
> The Natural Philosopher  wrote:
>> On 09/12/2025 18:58, Knute Johnson wrote:
>>> On 12/9/25 12:52, bp@www.zefox.net wrote:
>>>> Knute Johnson  wrote:
>>>>> On 12/9/25 10:29, bp@www.zefox.net wrote:
>>>>>> My Pi2 v1.1 running Trixie just announced that updates are availalbe.
>>>>>> However, they're eeprom updates. To my knowldge a Pi2 has no eeprom.
>>>>>> Still, if I let the updater run it makes a big ceremony of downloading
>>>>>> and installing _something_.
>>>>>>
>>>>>> What's going on?
>>>>>>
>>>>>> Thanks for reading, apologies for the recent flood of questions....
>>>>>>
>>>>>> bob prohaska
>>>>>>
>>>>>
>>>>> Only Pi4 and Pi5s have eeprom.ÿ But all get the update so that if you
>>>>> put that uSD card in a Pi4 or a Pi5 it will update it.
>>>>>
>>>> Since there's no eeprom on the Pi2 does the update downloaded and
>>>> stashed somewhere on the microSD? Or is it installed to /dev/null ?
>>>>
>>>> Thanks for writing,
>>>>
>>>> bob prohaska
>>>>
>>>
>>> It gets stashed on the card somewhere.
>>>
>> IIRC there is a bunch of machine level stuff in the FAT partition -
>> mounts as /boot/firmware - in a live SD situation
>>
>> These might as well be EEprom really! What else is an SD card?
>>
> 
> That's a happy thought but I'm skeptical. If it were true I'd have
> a lot less trouble booting from USB drives 8-)
> 
Well those perform the same function as the SD card on a Pi.

I think the issue is that the - ahem  *BIOS* - on a Pi is more primitive 
than a DOS PC used to be.

It just grabs a FAT formatted storage device and looks for a specific 
bunch of files there and those are the *real* bios.

Isn't that lost in the history of the chips used being designed for 
Smart TVs?


-- 
  ?A leader is best When people barely know he exists. Of a good leader, 
who talks little,When his work is done, his aim fulfilled,They will say, 
?We did this ourselves.?

? Lao Tzu, Tao Te Ching


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