Re: Move bookworm system from SSD to NVME

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?
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No.
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In order to preserve the partition information *you must dd the raw disk*
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dd id=/dev/sda od = /dev/nvme0n1 (or whatever)
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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)

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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
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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
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In the main bootable system there will be the fstab file which needs to tally with the partition ids.
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more /etc/fstab:
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proc            /proc           proc    defaults          0       0
PARTUUID=b8c9fbb7-01  /boot           vfat    defaults          0       2
PARTUUID=b8c9fbb7-02  /               ext4    defaults,noatime  0       1
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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
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Unless the bootloader finds that partition ID, it will *not load Linux*
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AIUI the boot sequence is this:
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Look for a DOS style VFAT partition on SD card, then USB, then NVME.
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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.
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If the PARTUUIDs don't match, the boot sequence hangs
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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
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The easy way to do this is not to clone the partitions, but the RAW DISK
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>

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
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replacing the name of the NVME to what I see when it is installed on the raspi.
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Best regards, and thank you for the help.

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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.