I just want to make sure again. How can one upgrade from one version of Debian to other without losing data or without formatiing the partition, simply as Ubuntu does.
An earlier mail in this mailing list stated to reboot from iso image and install in the same old traditional way.
This Facebook post states something else, and I couldn't make sure what to do without bricking up my hard configured system.
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Himanshu Shekhar
IIIT-Allahabad
IRM2015006