Re: Disk Structures

dd if=FreeBSD-14.2-RELEASE-arm64-aarch64-RPI.img of=/dev/da1 bs=10M

or 15.0 as appropriate

When I did this with 14.0, the Pi came up just fine.  Also the Pi5 did also.  I am confident what I see below is correct, I just don't understand it.

-- Doug

> On Dec 13, 2025, at 17:25, Daniel Anderson <development@kd2ycu.com> wrote:
> 
> Right but how are you getting it to the micro SD card?
> 
>> On Dec 13, 2025, at 5:24 PM, Doug Hardie <bc979@lafn.org> wrote:
>> 
>> The original installation was from FreeBSD-14.2-RELEASE-arm64-aarch64-RPI.img and I have been trying FreeBSD-15.0-RELEASE-arm64-aarch64-RPI.img
>> 
>> -- Doug
>> 
>>> On Dec 13, 2025, at 14:09, Daniel Anderson <development@kd2ycu.com> wrote:
>>> 
>>> Are you using the official Raspberry Pi images or imager?  I believe there’s a few specific requirements for the partitions...
>>> 
>>>> On Dec 13, 2025, at 4:54 PM, Doug Hardie <bc979@lafn.org> wrote:
>>>> 
>>>> I have a couple of Raspberry Pi 5s.  One of which is a production server for mail.  It works just fine.  However, the disk structure is quite confusing.  I only noticed this because of trying to bring up another similar server.  
>>>> 
>>>> If I list the dev entries for mmcsd, I get the following.
>>>> 
>>>> mail# ll /dev/mmcs*
>>>> crw-r-----  1 root operator 0x49 Nov 26 15:47 /dev/mmcsd0
>>>> crw-r-----  1 root operator 0x4a Nov 26 15:47 /dev/mmcsd0s1
>>>> crw-r-----  1 root operator 0x4b Nov 26 15:47 /dev/mmcsd0s2
>>>> crw-r-----  1 root operator 0x4e Nov 26 15:47 /dev/mmcsd0s2a
>>>> crw-r-----  1 root operator 0x4f Nov 26 15:47 /dev/mmcsd0s2b
>>>> 
>>>> This looks like the drive was partitioned using GPT.  However, gpart list shows MBR.  I removed the non-relevant entries:
>>>> 
>>>> mail# gpart list mmcsd0
>>>> Geom name: mmcsd0
>>>> entries: 4
>>>> scheme: MBR
>>>> Providers:
>>>> 1. Name: mmcsd0s1
>>>> Mediasize: 52428800 (50M)
>>>> type: fat32lba
>>>> 2. Name: mmcsd0s2
>>>> Mediasize: 128124452864 (119G)
>>>> type: freebsd
>>>> 
>>>> There are the two partitions I expected.  A boot partition, and a data partition.  Looking at the df output:
>>>> 
>>>> mail# df -h
>>>> Filesystem          Size    Used   Avail Capacity  Mounted on
>>>> /dev/ufs/rootfs     108G    9.1G     90G     9%    /
>>>> devfs               1.0K      0B    1.0K     0%    /dev
>>>> /dev/msdosfs/EFI     50M     25M     25M    50%    /boot/efi
>>>> tmpfs                12G     85M     12G     1%    /tmp
>>>> /dev/da0s2           25G    1.3G     22G     6%    /mailbkup
>>>> mail# 
>>>> 
>>>> The entries for / and /boot/efi are not at all what I expected.  The /mailbkup seems normal.  How do I make sense of all this?
>>>> 
>>>> I duplicated the microSD card but it doesn't boot the new machine.  I believe that is caused by a hardware failure in the Pi.  It does some strange rebooting before ever reading the SD card.  Never the less, I should be able to mount the copied SD card on a working machine, but can't figure out how to do that.  Messages shows the new disk is da1.
>>>> 
>>>> mail# mount /dev/da1s2 /mnt
>>>> mount: /dev/da1s2: No such file or directory
>>>> mail# mount /dev/mmcsd1s2b /mnt
>>>> mount: /dev/mmcsd1s2b: No such file or directory
>>>> 
>>>> I would like to verify that the new SD card is good.
>>>> 
>>>> 
>>>> -- Doug
>>>> 
>>>> 
>>> 
>> 
>