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MSGID: 1684f9e8
REPLY: 9d9a6e76
PID: SoupGate-Win32 v1.05
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.
--- SoupGate-Win32 v1.05
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