The Industrial Raspberry Pi Forum

Hi, I have a problem with increasingly slow and long write operation of image file to RevPi core 3 (stretch)
The image file is 3.8Gb it used to be 11-12 minutes to write at 5.5 Mbits/s I think.
Now the download usually starts at 1 Mbit/s and it can take up to ~40 minutes to write.
Sometimes the download starts at 5.5 but slows down after a minute or so.
I've tried different (short/longer/makes) cables, different ports, different PC's but I haven't really found a pattern.
Do you any ideas or recommendations?

Hi jenskastensson, which program are you using to write the image?
In case you use "dd" you can use 1Mb block size to increase the transfer speed.

Thanks for the tip, however nearly all our computers run Windows, where we use Win32DiskImager.

Hi, this seams like a strange behaviour. Can you try to test it with Linux? I also usualy use Win32DiskImager to flash images. I never had such suspicious performance issues yet.