Ubuntu Touch installation guide

[wibble]

Rather than "DD"    is Etcher ok for flashing to an SD card  ?

Thanks  BC

Question :
Above the .img.gz download :

ubuntu-touch-pinephone.img.bmap    3.98kb

ubuntu-touch-pinephone.img.gz         1.01GB

What is the ' img.bmap    3.98kb '    download for ?

The bmap is an xml file with info on which blocks of the image file actually contain data. An image writing tool that understands it can copy only the necessary data, speeding up writing and saving flash write cycles. The original imager is bmaptool, found in the bmap-tools package on ubuntu. The command would look something like:

Code:

bmaptool copy --bmap mapfile.bmap imagefile.img.xz /dev/sdX

Etcher can apparently use them if the .img, .bmap and a metadata file are all correctly packaged in a zip, but there's an open bug saying it currently makes performance worse not better.