Re: Move bookworm system from SSD to NVME

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.

 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

/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    defaults          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:-)
Best regards, and thank you for the help so far.
--
Jesper