Dennis Lee Bieber  wrote:
> On Sat, 22 Feb 2020 02:21:11 +0000 (UTC), bob prohaska 
> declaimed the following:
>
>
>>unzip -p 2020-02-13-raspbian-buster.zip | sudo dd of=/dev/sdX bs=4M
conv=fsync
>>
>          They released another version recently? Might explain
> why my last "apt update" said something about a repository change.
>
>>(adjusted for local condtions, of course).
>>
>>The command worked, but took a surprisingly long time, I think it was
>>over an hour. It finished with no errors, though it did report a one
>>block discrepancy between in and out.
>
>         Might work faster if one first unpacks the archive, then block copy
it
> to the card. Otherwise it may be so I/O bound that you are getting one
> chunk from the archive into the pipe (can the pipe hold enough for 4MB?),
> /then/ the pipe gets emptied, and the delay for the next chunk has the
> card/OS flushing I/O channels (and maybe triggering card wear leveling and
> allocation unit swapping).
>
>>
>>There's an sd card  copier in the Accessories menu, is that Etcher?
>>
>         Most likely NOT!
>
> https://www.balena.io/etcher/
>
https://github.com/balena-io/etcher#debian-and-ubuntu-based-package-repository-
gnulinux-x86x64
> (doesn't appear to be built for ARM boards)
>

Looks like it was either the 4M block size or the "free" usb-microSD
adapter. Tried it a second time after unzipping the image using
dd and a 1M block size. The write finished in minutes and fsck finds
error-free filesystems.

Thanks for reading, and apologies for the noises!

bob prohaska

--- SoupGate-Win32 v1.05