From: tnp@invalid.invalid   
      
   On 01/08/2024 16:47, Jesper wrote:   
   > On 01.08.2024 13:55, The Natural Philosopher wrote:   
   >> On 01/08/2024 12:31, Jesper wrote:   
   >>> Then the system to copy is on the 2 last lines. Correct?   
   >>>   
   >> No.   
   >>   
   >> In order to preserve the partition information *you must dd the raw disk*   
   >>   
   >> dd id=/dev/sda od = /dev/nvme0n1 (or whatever)   
   >>   
   >> That will create a two partition disk with the UUIDS of the partitions   
   >> the same as is mentioned in the boot data: If they don't match it wont   
   >  >boot.   
   >   
   > Are you saying that this command (the one right above) will clone the   
   > whole disc, and the job is done? Probably not. When I run "dd --help" on   
   > the system i want to clone, there is no information about the switch   
   > "id" you use in the command.   
   >   
   >   
   Soory. old brain.   
   dd if=/dev/sda  of = /dev/nvme0n1 (or whatever)   
      
   >>   
   >> Viz:   
   >>   
   >>   
   >> df -h | grep ^/dev/   
   > Running that command on my system gives:   
   > raspberrypi@raspberrypi:~ $ df -h | grep ^/dev/   
   > /dev/sda2           234G   19G   203G    9% /   
   > /dev/sda1           511M   76M   436M   15% /boot/firmware   
   > For /dev/sda1 it says "firmware", so it probably should/can not be   
   > copied, and is permanent on the raspi5-system   
      
   It has to be copied because it contains the boot information   
      
      
   >   
   >> /dev/root        15G  1.5G   13G  11% /   
   >> /dev/mmcblk0p1  255M   51M  205M  20% /boot   
   >>   
   >> These are the TWO partitions on a bootable PI device   
   >> In /boot which is DOS style formatted will be instructions on how to   
   >> boot the main system   
   >>   
   >> In the main bootable system there will be the fstab file which needs   
   >> to tally with the partition ids.   
   >>   
   >> more /etc/fstab:   
   >>   
   >> proc            /proc           proc      
   defaults          0       0   
   >> PARTUUID=b8c9fbb7-01  /boot           vfat    d   
   faults          0       2   
   >> PARTUUID=b8c9fbb7-02  /               ext4      
   defaults,noatime  0       1   
   >>   
   >> In the BOOT partition is this file   
   >>   more *.txt   
   >> ::::::::::::::   
   >> cmdline.txt   
   >> ::::::::::::::   
   >> console=serial0,115200 console=tty1 root=PARTUUID=b8c9fbb7-02   
   >> rootfstype=ext4 fs   
   >> ck.repair=yes rootwait modules-load=dwc2,g_ether   
   >>   
   >> Unless the bootloader finds that partition ID, it will *not load Linux*   
   >>   
   >> AIUI the boot sequence is this:   
   >>   
   >> Look for a DOS style VFAT partition on SD card, then USB, then NVME.   
   >>   
   >> Look for a file named 'cmdline.txt' parse the root partition ID  and   
   >> attempt to load a linux image from the boot  partition and have the   
   >> kernel image mount the aforementioned PARTUUID as root partition.   
   >>   
   >> If the PARTUUIDs don't match, the boot sequence hangs   
   >>   
   >> So it is important to have the same PARTUUID in /boot/cmdline.txt, and   
   >> in /etc/fstab, and in the partition label on the boot partition   
   >>   
   >> The easy way to do this is not to clone the partitions, but the RAW DISK   
   >>   
   >>   
   >>> And following drucks first suggestion I should run these 2 commands:   
   >>> 1: dd if=/dev/sda2 of=/dev/nvme0n1 bs=1M status=progress   
   >>> and   
   >>> 2: dd if=/dev/sda1 of=/dev/nvme0n1 bs=1M status=progress   
   >>>   
   >>> replacing the name of the NVME to what I see when it is installed on   
   >>> the raspi.   
   >>>   
   >>> Best regards, and thank you for the help.   
   >>   
   >> That wont work, but you wont destroy anything by trying   
   >   
   > So I will not try :-)   
   >   
   > I think I should not take any more of your time for this project. Using   
   > a PC and a windows program (Macrium Reflect) to clone the disc will take   
   > maybe 30 minutes. Learning the ins and outs of how it should be done in   
   > raspi-os can take 14 days for a windows-addict:-)   
   >   
      
   dd  will clone it in a lot less time   
      
   And that is the point, You MUST clone the WHOLE DISK. Not the partitions   
   inside it   
      
   > Best regards, and thank you for the help so far.   
      
   --   
   In todays liberal progressive conflict-free education system, everyone   
   gets full Marx.   
      
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