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Groups > linux.debian.user > #188949

Re: Debian 8 and Debian 9 Dual Boot

From Dan Norton <dnorton@mindspring.com>
Newsgroups linux.debian.user
Subject Re: Debian 8 and Debian 9 Dual Boot
Date 2017-11-13 16:30 +0100
Message-ID <uLoQq-7No-7@gated-at.bofh.it> (permalink)
References <uLdUZ-HB-1@gated-at.bofh.it> <uLgga-2nJ-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 11/13/2017 01:10 AM, David Christensen wrote:
> On 11/12/17 19:27, Dan Norton wrote:
>> My first Linux install was about one year ago. After some missteps, I 
>> have used Debian 8 in reasonable satisfaction on the desktop during 
>> that year. Now I want to leave 8 in place and do a network install 
>> for Debian 9 on the same disk and switch back and forth at boot time.
>
> I think your best bet is to migrate from Debian 8 to Debian 9:
>
> 1.  Image, backup, and/or archive everything.  You will especially 
> want to get a copy of the /etc tree onto a USB flash drive so you can 
> see LVM, fstab, etc., configuration settings for mounting the Debian 8 
> disk under Debian 9.

Please say more about the configuration settings. I back up /home and 
/var. The git stuff is in /opt and pushed to GitHub. Should the /etc 
tree be backed up also? How would the settings be used from 9?

>
> 2.  Put your bulk data onto a separate drive or a file server/ NAS.
>
> 3.  If your computer has a spare drive bay, buy a new drive, unplug 
> your old drive, install the new drive, install Debian 9 onto the new 
> drive, reconnect the old drive and mount read-only under Debian 9, and 
> migrate your settings and remaining data from the old drive to the new 
> drive. Your BIOS/UEFI should allow you to boot from either drive 
> during this process.  So long as you don't damage the Debian 8 disk, 
> you can always fall back to Debian 8 if the migration goes badly.
>
> 4.  If you computer does not have a spare drive bay, buy a new drive 
> and a USB external drive enclosure, put your old drive in the 
> enclosure, install the new drive, install Debian 9 onto the new drive, 
> plug in the old drive and mount read-only under Debian 9, and migrate 
> your settings and remaining data from the old drive to the new drive.  
> Again, your BIOS/UEFI should allow you to boot from either drive and 
> you can fall back to Debian 8 if necessary.
>
Sobering advice - good! Makes me re-think some things. A bit inefficient 
WRT disk space.
You did say "migrate" and not "upgrade" as I first read. Thanks David.

  - Dan

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Thread

Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-13 04:50 +0100
  Re: Debian 8 and Debian 9 Dual Boot David Christensen <dpchrist@holgerdanske.com> - 2017-11-13 07:20 +0100
    Re: Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-13 16:30 +0100
      Re: Debian 8 and Debian 9 Dual Boot Felix Miata <mrmazda@earthlink.net> - 2017-11-13 20:10 +0100
        Re: Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-13 21:10 +0100
        Re: Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-14 00:10 +0100
          Re: Debian 8 and Debian 9 Dual Boot Felix Miata <mrmazda@earthlink.net> - 2017-11-14 01:50 +0100
            Re: Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-14 03:40 +0100
              Re: Debian 8 and Debian 9 Dual Boot Felix Miata <mrmazda@earthlink.net> - 2017-11-14 04:00 +0100
                Re: Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-14 04:50 +0100
                Re: Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-16 19:40 +0100
                Re: Debian 8 and Debian 9 Dual Boot Felix Miata <mrmazda@earthlink.net> - 2017-11-16 20:10 +0100
                Re: Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-16 23:40 +0100
                Re: Debian 8 and Debian 9 Dual Boot Joe <joe@jretrading.com> - 2017-11-16 20:30 +0100
                Re: Debian 8 and Debian 9 Dual Boot Felix Miata <mrmazda@earthlink.net> - 2017-11-16 21:20 +0100
                Re: Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-29 19:10 +0100
                Re: Debian 8 and Debian 9 Dual Boot Joe <joe@jretrading.com> - 2017-11-29 19:20 +0100
                Re: Debian 8 and Debian 9 Dual Boot Joe <joe@jretrading.com> - 2017-11-29 19:50 +0100
                Re: Debian 8 and Debian 9 Dual Boot Felix Miata <mrmazda@earthlink.net> - 2017-11-29 19:40 +0100
                Re: Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-29 21:40 +0100
                Re: Debian 8 and Debian 9 Dual Boot Joe <joe@jretrading.com> - 2017-11-29 22:00 +0100
                Re: Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-29 22:40 +0100
                Re: Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-30 03:20 +0100
                Re: Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-29 22:10 +0100
                Re: Debian 8 and Debian 9 Dual Boot Joe <joe@jretrading.com> - 2017-11-29 23:10 +0100
                Re: Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-17 00:00 +0100
              Re: Debian 8 and Debian 9 Dual Boot Jonathan Dowland <jmtd@debian.org> - 2017-11-29 10:10 +0100
      Re: Debian 8 and Debian 9 Dual Boot David Christensen <dpchrist@holgerdanske.com> - 2017-11-13 20:20 +0100
        Re: Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-14 00:30 +0100
          Re: Debian 8 and Debian 9 Dual Boot David Christensen <dpchrist@holgerdanske.com> - 2017-11-14 00:40 +0100
  Re: Debian 8 and Debian 9 Dual Boot Jochen Spieker <ml@well-adjusted.de> - 2017-11-13 10:00 +0100
    Re: Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-13 17:00 +0100
      Re: Debian 8 and Debian 9 Dual Boot Jochen Spieker <ml@well-adjusted.de> - 2017-11-13 21:30 +0100
  Re: Debian 8 and Debian 9 Dual Boot Roberto C. Sánchez <roberto@debian.org> - 2017-11-13 13:00 +0100
    Re: Debian 8 and Debian 9 Dual Boot Roberto C. Sánchez <roberto@debian.org> - 2017-11-13 17:10 +0100
      Re: Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-13 18:10 +0100
    Re: Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-13 17:10 +0100
      Re: Debian 8 and Debian 9 Dual Boot Joe <joe@jretrading.com> - 2017-11-13 20:00 +0100
        Re: Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-29 04:20 +0100
          Re: Debian 8 and Debian 9 Dual Boot Michael Fothergill <michael.fothergill@gmail.com> - 2017-11-29 08:10 +0100
          Re: Debian 8 and Debian 9 Dual Boot Joe <joe@jretrading.com> - 2017-11-29 10:10 +0100
            Re: Debian 8 and Debian 9 Dual Boot Dan Norton <dnorton@mindspring.com> - 2017-11-29 19:00 +0100
          Re: Debian 8 and Debian 9 Dual Boot Felix Miata <mrmazda@earthlink.net> - 2017-11-29 20:00 +0100
            Re: Debian 8 and Debian 9 Dual Boot Felix Miata <mrmazda@earthlink.net> - 2017-11-29 20:40 +0100

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