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Hermes SMTP Server) with ESMTPA ID 763c20a6660cc825da2289433636de5b; Thu, 13 Jul 2023 20:58:22 +0000 (UTC) Message-ID: Date: Thu, 13 Jul 2023 15:58:13 -0500 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0 Content-Language: en-US To: Linux RAID From: Leslie Rhorer Subject: Corrupted RAID 1 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit References: X-Mailer: WebService/1.1.21638 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Precedence: bulk List-ID: X-Mailing-List: linux-raid@vger.kernel.org I have a corrupted bootable RAID 1 array on a pair of SDD drives, and I fear I need some assistance. Actually, there are four partitions on each drive, and two RAID 1 arrays were assembled from each drive. When working properly, the second pair of partitions were mounted as / and the first pair were mounted as /boot. The OS is Debian Buster. When I attempt to boot the system, it goes directly to the GRUB prompt. I pulled the drives and attached them to an active system. Mdadm reports both partition tables to be intact with partition labels of fd, 83, ef, and 82, respectively and MBR magic of aa55. When I try to assemble any array says the partitions exist but are not md arrays. Fdisk reports the partition types as Linux raid autodetect, Linux, EFI, and Linux swap / Solaris. The EFI partitions are marked bootable and contain the following: total 3472 -rwxr-xr-x 1 root root 108 May 28 2022 BOOTX64.CSV -rwxr-xr-x 1 root root 84648 May 28 2022 fbx64.efi -rwxr-xr-x 1 root root 152 May 28 2022 grub.cfg -rwxr-xr-x 1 root root 1672576 May 28 2022 grubx64.efi -rwxr-xr-x 1 root root 845480 May 28 2022 mmx64.efi -rwxr-xr-x 1 root root 934240 May 28 2022 shimx64.efi Any suggestions? I should say that the running system (Bullseye) is not the same version as the failed one (Buster). Of course the failed system does need to be upgraded, but there are specific reasons why this is quite undesirable at this point.