Bonjour
Voici un extrait d'un boot-info réalisé en version 19.10 (
https://paste.ubuntu.com/p/T3gFWNpTPj/ ) extrait de cette
discussion.
a) La description du support d'installation
sdc1: __________________________________________________________________________
File system: iso9660
Boot sector type: Unknown
Boot sector info:
Operating System:
Boot files: /boot/grub/grub.cfg
sdc2: __________________________________________________________________________
File system: vfat
Boot sector type: FAT16
Boot sector info: According to the info in the boot sector, sdc2 starts
at sector 0. But according to the info from fdisk,
sdc2 starts at sector 4073124. According to the info
in the boot sector, sdc2 has 0 sectors.
Operating System:
Boot files: /efi/boot/bootx64.efi /efi/boot/grubx64.efi
/efi/boot/mmx64.efi
sdc3: __________________________________________________________________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System:
Boot files:
Drive: sdc _____________________________________________________________________
Disk /dev/sdc: 3.75 GiB, 4007264256 bytes, 7826688 sectors
Disk model: DataTraveler G3
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Partition Boot Start Sector End Sector # of Sectors Id System=
/dev/sdc1 * 0 4,812,191 4,812,192 0 Empty
/dev/sdc2 4,073,124 4,081,059 7,936 ef EFI (FAT-12/16/32)
/dev/sdc3 4,812,800 7,826,687 3,013,888 83 Linux
/dev/sdc1 overlaps with /dev/sdc2
GUID Partition Table detected, but does not seem to be used.
Partition Attrs Start Sector End Sector # of Sectors System
/dev/sdc1 + R 0 4,812,135 4,812,136 Data partition (Windows/Linux)
/dev/sdc2 + R 4,073,124 4,081,059 7,936 Data partition (Windows/Linux)
dev/sdc1 2019-10-17-12-53-34-00 iso9660 Ubuntu 19.10 amd64
/dev/sdc2 866D-0A62 vfat
/dev/sdc3 3056c828-927c-4d3c-82c9-b5e9549b5fbd ext4 casper-rw
La partition SDC3 contient le logiciel à installer. C'est bien une clé USB
lrwxrwxrwx 1 root root 9 Nov 16 11:54 usb-Kingston_DataTraveler_G3_0060E049DF85EB2110006395-0:0 -> ../../sdc
lrwxrwxrwx 1 root root 10 Nov 16 11:54 usb-Kingston_DataTraveler_G3_0060E049DF85EB2110006395-0:0-part1 -> ../../sdc1
lrwxrwxrwx 1 root root 10 Nov 16 11:54 usb-Kingston_DataTraveler_G3_0060E049DF85EB2110006395-0:0-part2 -> ../../sdc2
lrwxrwxrwx 1 root root 10 Nov 16 11:54 usb-Kingston_DataTraveler_G3_0060E049DF85EB2110006395-0:0-part3 -> ../../sdc3
B) les choix de boot de l'installation. On voit que le mot
persitent n'a pas été écrit.
========================== sdc1/boot/grub/grub.cfg: ===========================
--------------------------------------------------------------------------------
if loadfont /boot/grub/font.pf2 ; then
set gfxmode=auto
insmod efi_gop
insmod efi_uga
insmod gfxterm
terminal_output gfxterm
fi
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
set timeout=5
menuentry "Try Ubuntu without installing" {
set gfxpayload=keep
linux /casper/vmlinuz file=/cdrom/preseed/ubuntu.seed quiet splash ---
initrd /casper/initrd
}
menuentry "Try Ubuntu without installing (safe graphics)" {
set gfxpayload=keep
linux /casper/vmlinuz file=/cdrom/preseed/ubuntu.seed quiet splash nomodeset ---
initrd /casper/initrd
}
menuentry "Install Ubuntu" {
set gfxpayload=keep
linux /casper/vmlinuz file=/cdrom/preseed/ubuntu.seed only-ubiquity quiet splash ---
initrd /casper/initrd
}
menuentry "Install Ubuntu (safe graphics)" {
set gfxpayload=keep
linux /casper/vmlinuz file=/cdrom/preseed/ubuntu.seed only-ubiquity quiet splash nomodeset ---
initrd /casper/initrd
}
menuentry "OEM install (for manufacturers)" {
set gfxpayload=keep
linux /casper/vmlinuz file=/cdrom/preseed/ubuntu.seed only-ubiquity quiet splash oem-config/enable=true ---
initrd /casper/initrd
}
menuentry "Check disc for defects" {
set gfxpayload=keep
linux /casper/vmlinuz integrity-check quiet splash ---
initrd /casper/initrd
}
--------------------------------------------------------------------------------
Puis on voit l'analyse du boot-info
ADDITIONAL INFORMATION :
=================== log of boot-info 20191116_1154 ===================
boot-info version : 4ppa66
boot-sav version : 4ppa66
boot-sav-extra version : 4ppa66
glade2script version : 3.2.3~ppa4
Warning: The driver descriptor says the physical block size is 2048 bytes, but Linux says it is 512 bytes.
boot-info is executed in installed-session (Ubuntu 19.10, eoan, Ubuntu, x86_64)
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 36 bits physical, 48 bits virtual
file=/cdrom/preseed/ubuntu.seed initrd=/casper/initrd quiet splash --- maybe-ubiquity
