I am a atypical user.
I currently multi-boot among five instances of Jessie and Stretch.
The only OS with access to Grub is the one on sda1.
I just did a fresh install of Stretch (Debian 9.1) to sda1 using a
purchased DVD.
I chose the non-graphical expert install.
I *MADE* a typing error.
The installer told me I had missed a step.
When asked, I chose to go back "one step".
I did. The install *APPARENTLY* proceeded normally.
*HOWEVER* I do not recall ever having been asked any questions about
internet connectivity.
I'm currently using the Debian installed on a different partition.
Before doing anything with/to/relating to the copy of Debian on sda1, I
wish to preserve the *MAXIMUM* amount of installation related data
related logs.
I will access any file on sda1 via root user of install on a different
partition.
*What files should I preserve?*
They may be no problem.
Having been "Customer Service" in another field, I prefer to "think
first" rather than "repent at leisure".
Comments?
TIA
P.S. *NOT* using the install on sda in the short term does not cause any
hardship.