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Re: is it possible to install bullseye by copy whole disk?

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On 1/21/22 11:36 PM, lou wrote:
> i've installed bullseye on usb disk
> 
> can i copy it to hard disk (sda2) and make necessary change in 
> /etc/fstab and
> 
> then update grub of usb disk to boot sda2?
> 
> Thanks!


I have a SOHO network with about a dozen IoT, iOS, Android, Windows, 
macOS, Debian GNU/ Linux, and FreeBSD machines.


Copying/ imaging/ cloning Debian (and FreeBSD) operating system 
instances from one device to another is possible.  There are multiple 
choices.


A simple case is to image the entire device.  Boot the Debian Installer 
(d-i) (or a live Linux distribution) and use dd(1) to copy the entire 
USB drive to the entire HDD:

# dd bs=1M if=/dev/disk/by-id/usb-... of=/dev/disk/by-id/ata-...


When done, shut down the computer, disconnect the USB drive, boot the 
computer, enter the CMOS setup utility, adjust the settings, save the 
settings, exit Setup, and boot the HDD.


Of course, the number of sectors on the target device must be equal to 
or larger than the number of allocated sectors on the source device. 
And, if the device uses GPT partitioning, you must deal with the backup 
partition table at the end.


Also note that if the USB disk was partitioned with the MBR scheme, the 
d-i may have written an entry to /etc/crypttab or /etc/fstab for swap 
that uses a /dev/sd?? partition node.  (Boot and/or root should be based 
upon UUID).  Using /dev/sd* nodes is brittle and can break if you add, 
remove, or rearrange drives.  My fix is to replace the swap partition 
/dev/sd?? value with a /dev/disk/by-partuuid/... value.


While doing the work by hand from a d-i rescue console or a live Linux 
distribution terminal is possible, it is error prone.  I have written 
scripts to automate most of the steps.  Alternatively, there are 
purpose-built tools for cloning drives.  Clonezilla is one FOSS example:

https://clonezilla.org/


David

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  Re: firejail: changing Ethernet network adapter name is breaking  Firefox profile Darac Marjal <mailinglist@darac.org.uk> - 2022-01-18 00:00 +0100
    Re: firejail: changing Ethernet network adapter name is breaking  Firefox profile piorunz <piorunz@gmx.com> - 2022-01-18 02:30 +0100
  Re: firejail: changing Ethernet network adapter name is breaking  Firefox profile Andrei POPESCU <andreimpopescu@gmail.com> - 2022-01-22 08:30 +0100
    is it possible to install bullseye by copy whole disk? lou <loushanguan2015@sina.com> - 2022-01-22 08:50 +0100
      Re: is it possible to install bullseye by copy whole disk? Andrei POPESCU <andreimpopescu@gmail.com> - 2022-01-22 09:30 +0100
        Re: is it possible to install bullseye by copy whole disk? lou <loushanguan2015@sina.com> - 2022-01-22 11:00 +0100
      Re: is it possible to install bullseye by copy whole disk? David <bouncingcats@gmail.com> - 2022-01-22 09:30 +0100
      Re: is it possible to install bullseye by copy whole disk? Stanislav Vlasov <stanislav.v.v@gmail.com> - 2022-01-22 13:00 +0100
      Re: is it possible to install bullseye by copy whole disk? Cindy Sue Causey <butterflybytes@gmail.com> - 2022-01-22 13:10 +0100
      Re: is it possible to install bullseye by copy whole disk? David Christensen <dpchrist@holgerdanske.com> - 2022-01-22 18:50 +0100
        Re: is it possible to install bullseye by copy whole disk? Andrei POPESCU <andreimpopescu@gmail.com> - 2022-01-22 23:50 +0100
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