On 09/10/2019 20:31, Dennis Lee Bieber wrote:
> I'd updated both 3B+, 4B2G, and 4B4G to the most recent Noobs Raspbian last
> week. Today I ran "sudo apt-get update/sudo apt-get upgrade" on systems
> (main item: an SSL update). While the second 3B+ was processing the
> "upgrade" phase, I plugged in the 4B2G. I was able to run the same
> update/upgrade, shutdown, swap with the 4B4G, update/upgrade (needed two
> updates -- NTP had not synched the time and it rejected a repository for
> being invalid [the R-Pi was using the last boot time, and the repository
> was dated five days in the future ]), and shutdown... ALL BEFORE the 3B+
> finished its upgrade of the same files.
>
>  Either that 3B+ has a very slow SD card, or a distinct speed
> difference.

The Raspberry Pi 4's SD card reader is many times faster than on
previous models.

---druck

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