Bug#1121934: cdrom: Target install partition fails to mount in EFI installer. Works in non-EFI installer

To: "daan.nusman" <daan.nusman@proton.me>
Cc: 1121934@bugs.debian.org, kibi@debian.org
Subject: Bug#1121934: cdrom: Target install partition fails to mount in EFI installer. Works in non-EFI installer
From: Pascal Hambourg <pascal@plouf.fr.eu.org>
Date: Fri, 5 Dec 2025 23:05:57 +0100
Message-id: <[🔎] 705ce006-dde8-460b-9d59-602ea4f72427@plouf.fr.eu.org>
Reply-to: Pascal Hambourg <pascal@plouf.fr.eu.org>, 1121934@bugs.debian.org
In-reply-to: <[🔎] tTDmO0E2mFBZdU7X2Tgbq4eKw3fHd1JFTParzfVRe3_HJqyLW-3sMS4IfOA9dO6bqNAizDB4hX-MgLGkeQFQqiDBPJDUfR9LpMJ-ryoDzks=@proton.me>
References: <[🔎] 176488432209.2645.9751721462483915987.reportbug@spire.lan> <494f5c96-6560-442e-aa25-88e0bc316800@plouf.fr.eu.org> <YDk3NUbGrlxyetM_N1aCrKl19RC_dzOzezsgfGuVg-igNVaS9m0zWMsQ3FpmgbfaB34liIA5eTfYP9MUKWb7U-I-pOw9GAJwsf3Brtfi67o=@proton.me> <[🔎] 3295a7ce-ce1f-4d3f-8c90-2e759b805a0d@plouf.fr.eu.org> <[🔎] 176488432209.2645.9751721462483915987.reportbug@spire.lan> <[🔎] 169HdPZbzTtokfBQx3PNtchw5tYNyjBNWVjFe5IhLKGHuHL8KgraS68Ei9G49QMypE-Hvfga3ScVpijxZb23iz54ga5MFf_VKH7yV14SaFw=@proton.me> <[🔎] 9d1f86d8-830f-44cd-a224-7132cba5f772@plouf.fr.eu.org> <[🔎] tTDmO0E2mFBZdU7X2Tgbq4eKw3fHd1JFTParzfVRe3_HJqyLW-3sMS4IfOA9dO6bqNAizDB4hX-MgLGkeQFQqiDBPJDUfR9LpMJ-ryoDzks=@proton.me> <[🔎] 176488432209.2645.9751721462483915987.reportbug@spire.lan>

On 05/12/2025 at 22:45, daan.nusman wrote:


daan@spire:~$ sudo fdisk -l
Disk /dev/sda: 465.76 GiB, 500107862016 bytes, 976773168 sectors
Disk model: Samsung SSD 840
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 5629284A-E692-4059-9076-5D0B4D39D223

Device       Start       End   Sectors   Size Type
/dev/sda1     2048   2000895   1998848   976M EFI System
/dev/sda2  2000896   4001791   2000896   977M Linux filesystem
/dev/sda3  4001792 976771071 972769280 463.9G Linux filesystem

The EFI and /boot partitions have the maximum size 1GB, so in non-UEFImode with LVM the ext4 /boot partition would have the same position andsize as this EFI partition.

Reply to:

References:
- Bug#1121934: cdrom: Target install partition fails to mount in EFI installer. Works in non-EFI installer
  - From: Daan Nusman <daan.nusman@proton.me>
- Bug#1121934: cdrom: Target install partition fails to mount in EFI installer. Works in non-EFI installer
  - From: Pascal Hambourg <pascal@plouf.fr.eu.org>
- Bug#1121934: cdrom: Target install partition fails to mount in EFI installer. Works in non-EFI installer
  - From: "daan.nusman" <daan.nusman@proton.me>
- Bug#1121934: cdrom: Target install partition fails to mount in EFI installer. Works in non-EFI installer
  - From: Pascal Hambourg <pascal@plouf.fr.eu.org>
- Bug#1121934: cdrom: Target install partition fails to mount in EFI installer. Works in non-EFI installer
  - From: "daan.nusman" <daan.nusman@proton.me>

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