Je fais cet essai dans une machine virtuelle (VirtualBox) suite à cette discussion :
https://forum.ubuntu-fr.org/viewtopic.php?id=2058145
Mon but est d'avoir une solution "sur étagère" à proposer à un novice si le cas se représente. J'ai mis "Résolu" au début de mon titre parce que je ne demande pas d'aide.
1) État de départ :
Boot-info réalisé depuis une session du Ubuntu 20.04 installé (ne pas tenir compte de sdb, ni de sdb1) :
boot-info-4ppa125 [20201115_1312]
============================== Boot Info Summary ===============================
=> No boot loader is installed in the MBR of /dev/sda.
=> No boot loader is installed in the MBR of /dev/sdb.
sda1: __________________________________________________________________________
File system: vfat
Boot sector type: Windows 8/2012: FAT32
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files: /efi/Boot/bootx64.efi /efi/Boot/fbx64.efi
/efi/Boot/mmx64.efi /efi/ubuntu/grubx64.efi
/efi/ubuntu/mmx64.efi /efi/ubuntu/shimx64.efi
/efi/ubuntu/grub.cfg /efi/Microsoft/Boot/bootmgfw.efi
/efi/Microsoft/Boot/bootmgr.efi
/efi/Microsoft/Boot/memtest.efi
sda2: __________________________________________________________________________
File system:
Boot sector type: -
Boot sector info:
sda3: __________________________________________________________________________
File system: ntfs
Boot sector type: Windows 8/2012: NTFS
Boot sector info: No errors found in the Boot Parameter Block.
Operating System: Windows 10
Boot files: /Windows/System32/winload.exe
sda4: __________________________________________________________________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 20.04.1 LTS
Boot files: /boot/grub/grub.cfg /etc/fstab /etc/default/grub
sdb1: __________________________________________________________________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System:
Boot files:
================================ 2 OS detected =================================
OS#1: L'OS actuellement utilisé - Ubuntu 20.04.1 LTS CurrentSession on sda4
OS#2: Windows 10 on sda3
============================ Architecture/Host Info ============================
CPU architecture: 64-bit
BOOT_IMAGE of the installed session in use:
/boot/vmlinuz-5.4.0-53-generic root=UUID=b5afe1f3-1b56-4d38-abe5-2395ffcd5aaa ro quiet splash vt.handoff=7
===================================== UEFI =====================================
BIOS is EFI-compatible, and is setup in EFI-mode for this installed-session.
efibootmgr -v
BootCurrent: 0001
BootOrder: 0006,0005,0004,0000,0001,0002,0003
Boot0000* EFI DVD/CDROM PciRoot(0x0)/Pci(0xd,0x0)/Sata(1,0,0)
Boot0001* EFI Hard Drive PciRoot(0x0)/Pci(0xd,0x0)/Sata(0,0,0)
Boot0002* EFI Hard Drive 1 PciRoot(0x0)/Pci(0xd,0x0)/Sata(2,0,0)
Boot0003* EFI Internal Shell MemoryMapped(11,0x2100000,0x28fffff)/FvFile(7c04a583-9e3e-4f1c-ad65-e05268d0b4d1)
Boot0004* OS on hard drive HD(1,GPT,6b936e07-6179-4a9d-8f47-5fb8b4be700c,0x800,0x32000)/File(\EFI\Microsoft\Boot\bootmgfw.efi)
Boot0005* Windows Boot Manager HD(1,GPT,6b936e07-6179-4a9d-8f47-5fb8b4be700c,0x800,0x32000)/File(\EFI\Microsoft\Boot\bootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}...a................
Boot0006* ubuntu HD(1,GPT,6b936e07-6179-4a9d-8f47-5fb8b4be700c,0x800,0x32000)/File(\EFI\ubuntu\shimx64.efi)
78415fb8fb9b909f8029858113f1335f sda1/Boot/bootx64.efi
2895d47544fd587b26c7e29be1295c27 sda1/Boot/fbx64.efi
dc3c47be2f78a78e5e57d097ae6c5c84 sda1/Boot/mmx64.efi
d8b4b9ae3018b1f4612611be7f42507a sda1/ubuntu/grubx64.efi
dc3c47be2f78a78e5e57d097ae6c5c84 sda1/ubuntu/mmx64.efi
78415fb8fb9b909f8029858113f1335f sda1/ubuntu/shimx64.efi
e69be5ddc7c4165e0f3e5ee05d267ec2 sda1/Microsoft/Boot/bootmgfw.efi
5a0ceb06ab09d5c2be36b38bcb33617f sda1/Microsoft/Boot/bootmgr.efi
============================= Drive/Partition Info =============================
Disks info: ____________________________________________________________________
sda : is-GPT, no-BIOSboot, has---ESP, not-usb, not-mmc, has-os, 2048 sectors * 512 bytes
sdb : is-GPT, no-BIOSboot, has-noESP, not-usb, not-mmc, no-os, 2048 sectors * 512 bytes
Partitions info (1/3): _________________________________________________________
sda4 : is-os, 64, apt-get, signed grub-pc grub-efi , grub2, grub-install, grubenv-ok, update-grub, not-far
sda1 : no-os, 32, nopakmgr, no-docgrub, nogrub, nogrubinstall, no-grubenv, noupdategrub, not-far
sda3 : is-os, 32, nopakmgr, no-docgrub, nogrub, nogrubinstall, no-grubenv, noupdategrub, not-far
sdb1 : no-os, 32, nopakmgr, no-docgrub, nogrub, nogrubinstall, no-grubenv, noupdategrub, not-far
Partitions info (2/3): _________________________________________________________
sda4 : isnotESP, fstab-has-goodEFI, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot
sda1 : is---ESP, part-has-no-fstab, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot
sda3 : isnotESP, part-has-no-fstab, no-nt, haswinload, no-recov-nor-hid, no-bmgr, notwinboot
sdb1 : isnotESP, part-has-no-fstab, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot
Partitions info (3/3): _________________________________________________________
sda4 : not-sepboot, with-boot, fstab-without-boot, not-sep-usr, with--usr, fstab-without-usr, std-grub.d, sda
sda1 : not-sepboot, no-boot, part-has-no-fstab, not-sep-usr, no---usr, part-has-no-fstab, std-grub.d, sda
sda3 : not-sepboot, no-boot, part-has-no-fstab, not-sep-usr, no---usr, part-has-no-fstab, std-grub.d, sda
sdb1 : maybesepboot, no-boot, part-has-no-fstab, not-sep-usr, no---usr, part-has-no-fstab, std-grub.d, sdb
fdisk -l (filtered): ___________________________________________________________
Disk sda: 70.2 GiB, 75369676800 bytes, 147206400 sectors
Disk identifier: C8A6757F-8E2C-433B-9443-908C14024B22
Start End Sectors Size Type
sda1 2048 206847 204800 100M EFI System
sda2 206848 239615 32768 16M Microsoft reserved
sda3 239616 103564765 103325150 49.3G Microsoft basic data
sda4 103567360 146141183 42573824 20.3G Linux filesystem
Disk sdb: 40.58 GiB, 43552735232 bytes, 85063936 sectors
Disk identifier: F1F26032-8293-4FA3-9DD7-26B596A08F7A
Start End Sectors Size Type
sdb1 2048 85063679 85061632 40.6G Linux filesystem
parted -lm (filtered): _________________________________________________________
sda:75.4GB:scsi:512:512:gpt:ATA VBOX HARDDISK:;
1:1049kB:106MB:105MB:fat32:EFI system partition:boot, esp;
2:106MB:123MB:16.8MB::Microsoft reserved partition:msftres;
3:123MB:53.0GB:52.9GB:ntfs:Basic data partition:msftdata;
4:53.0GB:74.8GB:21.8GB:ext4::;
sdb:43.6GB:scsi:512:512:gpt:ATA VBOX HARDDISK:;
1:1049kB:43.6GB:43.6GB:ext4::;
blkid (filtered): ______________________________________________________________
NAME FSTYPE UUID PARTUUID LABEL PARTLABEL
sda
├─sda1 vfat EC3F-70FA 6b936e07-6179-4a9d-8f47-5fb8b4be700c EFI system partition
├─sda2 075ee5f4-d3c8-4fc0-a300-d43fa5cb0f6b Microsoft reserved partition
├─sda3 ntfs 2E7A4CDA7A4CA107 4763b382-7b29-4bb0-bf04-bc964a69151d Basic data partition
└─sda4 ext4 b5afe1f3-1b56-4d38-abe5-2395ffcd5aaa 9cf72085-0ea9-4018-9034-bf670c5466c9
sdb
└─sdb1 ext4 e400e99e-a76f-42a8-a120-d454ddcee09d 3d269221-7246-40cc-afbd-e2cc9caf91a4 clone_W10_focal
df (filtered): _________________________________________________________________
Avail Use% Mounted on
sda3 34G 31% /mnt/boot-sav/sda3
sda4 12G 35% /
sdb1 17.6G 50% /mnt/boot-sav/sdb1
Mount options: __________________________________________________________________
sda3 rw,relatime,user_id=0,group_id=0,allow_other,blksize=4096
sda4 rw,relatime,errors=remount-ro
sdb1 rw,relatime
===================== sda1/efi/ubuntu/grub.cfg (filtered) ======================
search.fs_uuid b5afe1f3-1b56-4d38-abe5-2395ffcd5aaa root hd0,gpt4
set prefix=($root)'/boot/grub'
configfile $prefix/grub.cfg
====================== sda4/boot/grub/grub.cfg (filtered) ======================
Ubuntu b5afe1f3-1b56-4d38-abe5-2395ffcd5aaa
Ubuntu, avec Linux 5.4.0-53-generic b5afe1f3-1b56-4d38-abe5-2395ffcd5aaa
Ubuntu, avec Linux 5.4.0-42-generic b5afe1f3-1b56-4d38-abe5-2395ffcd5aaa
Windows Boot Manager (sur sda1) osprober-efi-EC3F-70FA
### END /etc/grub.d/30_os-prober ###
UEFI Firmware Settings uefi-firmware
### END /etc/grub.d/30_uefi-firmware ###
========================== sda4/etc/fstab (filtered) ===========================
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/sda5 during installation
UUID=b5afe1f3-1b56-4d38-abe5-2395ffcd5aaa / ext4 errors=remount-ro 0 1
# /boot/efi was on /dev/sda1 during installation
UUID=EC3F-70FA /boot/efi vfat umask=0077 0 1
/swapfile none swap sw 0 0
======================= sda4/etc/default/grub (filtered) =======================
GRUB_DEFAULT=0
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""
==================== sda4: Location of files loaded by Grub ====================
GiB - GB File Fragment(s)
54,338119507 = 58,345111552 boot/grub/grub.cfg 1
55,067516327 = 59,128295424 boot/vmlinuz 1
53,143558502 = 57,062461440 boot/vmlinuz-5.4.0-42-generic 2
55,067516327 = 59,128295424 boot/vmlinuz-5.4.0-53-generic 1
53,143558502 = 57,062461440 boot/vmlinuz.old 2
51,095413208 = 54,863282176 boot/initrd.img 5
51,142261505 = 54,913585152 boot/initrd.img-5.4.0-42-generic 3
51,095413208 = 54,863282176 boot/initrd.img-5.4.0-53-generic 5
51,142261505 = 54,913585152 boot/initrd.img.old 3
===================== sda4: ls -l /etc/grub.d/ (filtered) ======================
-rwxr-xr-x 1 root root 17622 oct. 1 17:19 10_linux
-rwxr-xr-x 1 root root 42359 oct. 1 17:19 10_linux_zfs
-rwxr-xr-x 1 root root 12894 juil. 31 02:34 20_linux_xen
-rwxr-xr-x 1 root root 12059 juil. 31 02:34 30_os-prober
-rwxr-xr-x 1 root root 1424 juil. 31 02:34 30_uefi-firmware
-rwxr-xr-x 1 root root 214 juil. 31 02:34 40_custom
-rwxr-xr-x 1 root root 216 juil. 31 02:34 41_custom
Suggested repair: ______________________________________________________________
The default repair of the Boot-Repair utility would reinstall the grub-efi-amd64-signed of
sda4,
using the following options: sda1/boot/efi,
Additional repair would be performed: unhide-bootmenu-10s win-legacy-basic-fix use-standard-efi-file
Final advice in case of suggested repair: ______________________________________
Please do not forget to make your UEFI firmware boot on the L'OS actuellement utilisé - Ubuntu 20.04.1 LTS CurrentSession entry (sda1/efi/****/shim****.efi (**** will be updated in the final message) file) !
If your computer reboots directly into Windows, try to change the boot order in your UEFI firmware.
If your UEFI firmware does not allow to change the boot order, change the default boot entry of the Windows bootloader.
For example you can boot into Windows, then type the following command in an admin command prompt:
bcdedit /set {bootmgr} path \EFI\****\shim****.efi (**** will be updated in the final message)
2) Installation de Windows 10 :
A noter : c'est le fichier ISO de la version Windows 10 2020 que j'utilise. Et c'est "Windows 10 famille" (EDIT : après install, dans les informations système, je peux lire : "Édition : Windows 10 Famille ; version : 2004" )
Sélection de la partition système de Windows, clic sur formatage. Message d'avertissement "cette partition peut contenir des applications ou fichiers importants fournis par le fabricant de votre ordinateur. Si vous formatez cette partition, les données stockées sur celles-ci seront perdues" :
Mais formater, c'est ce que je veux sinon l'installateur va stocker l'install actuelle dans un fichier Windows.old et je ne veux pas de ça. Je veux un Win10 tout neuf et tout propre, sans traces du passé. Je poursuis l'installation (j'en mentionne quelques péripéties dans le post #2).
3) Etat final :
Boot-info depuis une session du Ubuntu 20.04 installé :
boot-info-4ppa125 [20201115_1705]
============================== Boot Info Summary ===============================
=> No boot loader is installed in the MBR of /dev/sda.
=> No boot loader is installed in the MBR of /dev/sdb.
sda1: __________________________________________________________________________
File system: vfat
Boot sector type: Windows 8/2012: FAT32
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files: /efi/Boot/bootx64.efi /efi/Boot/fbx64.efi
/efi/Boot/mmx64.efi /efi/ubuntu/grubx64.efi
/efi/ubuntu/mmx64.efi /efi/ubuntu/shimx64.efi
/efi/ubuntu/grub.cfg /efi/Microsoft/Boot/bootmgfw.efi
/efi/Microsoft/Boot/bootmgr.efi
/efi/Microsoft/Boot/memtest.efi
sda2: __________________________________________________________________________
File system:
Boot sector type: -
Boot sector info:
sda3: __________________________________________________________________________
File system: ntfs
Boot sector type: Windows 8/2012: NTFS
Boot sector info: No errors found in the Boot Parameter Block.
Operating System: Windows 8 or 10
Boot files: /Windows/System32/winload.exe
sda4: __________________________________________________________________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 20.04.1 LTS
Boot files: /boot/grub/grub.cfg /etc/fstab /etc/default/grub
sdb1: __________________________________________________________________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System:
Boot files:
================================ 2 OS detected =================================
OS#1: L'OS actuellement utilisé - Ubuntu 20.04.1 LTS CurrentSession on sda4
OS#2: Windows 8 or 10 on sda3
============================ Architecture/Host Info ============================
CPU architecture: 64-bit
BOOT_IMAGE of the installed session in use:
/boot/vmlinuz-5.4.0-53-generic root=UUID=b5afe1f3-1b56-4d38-abe5-2395ffcd5aaa ro quiet splash vt.handoff=7
===================================== UEFI =====================================
BIOS is EFI-compatible, and is setup in EFI-mode for this installed-session.
efibootmgr -v
BootCurrent: 0004
BootOrder: 0004,0005,0000,0001,0002,0003
Boot0000* EFI DVD/CDROM PciRoot(0x0)/Pci(0xd,0x0)/Sata(1,0,0)
Boot0001* EFI Hard Drive PciRoot(0x0)/Pci(0xd,0x0)/Sata(0,0,0)
Boot0002* EFI Hard Drive 1 PciRoot(0x0)/Pci(0xd,0x0)/Sata(2,0,0)
Boot0003* EFI Internal Shell MemoryMapped(11,0x2100000,0x28fffff)/FvFile(7c04a583-9e3e-4f1c-ad65-e05268d0b4d1)
Boot0004* ubuntu HD(1,GPT,6b936e07-6179-4a9d-8f47-5fb8b4be700c,0x800,0x32000)/File(\EFI\ubuntu\shimx64.efi)
Boot0005* Windows Boot Manager HD(1,GPT,6b936e07-6179-4a9d-8f47-5fb8b4be700c,0x800,0x32000)/File(\EFI\Microsoft\Boot\bootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}...a................
78415fb8fb9b909f8029858113f1335f sda1/Boot/bootx64.efi
2895d47544fd587b26c7e29be1295c27 sda1/Boot/fbx64.efi
dc3c47be2f78a78e5e57d097ae6c5c84 sda1/Boot/mmx64.efi
d8b4b9ae3018b1f4612611be7f42507a sda1/ubuntu/grubx64.efi
dc3c47be2f78a78e5e57d097ae6c5c84 sda1/ubuntu/mmx64.efi
78415fb8fb9b909f8029858113f1335f sda1/ubuntu/shimx64.efi
e69be5ddc7c4165e0f3e5ee05d267ec2 sda1/Microsoft/Boot/bootmgfw.efi
5a0ceb06ab09d5c2be36b38bcb33617f sda1/Microsoft/Boot/bootmgr.efi
============================= Drive/Partition Info =============================
Disks info: ____________________________________________________________________
sda : is-GPT, no-BIOSboot, has---ESP, not-usb, not-mmc, has-os, 2048 sectors * 512 bytes
sdb : is-GPT, no-BIOSboot, has-noESP, not-usb, not-mmc, no-os, 2048 sectors * 512 bytes
Partitions info (1/3): _________________________________________________________
sda4 : is-os, 64, apt-get, signed grub-pc grub-efi , grub2, grub-install, grubenv-ok, update-grub, not-far
sda1 : no-os, 32, nopakmgr, no-docgrub, nogrub, nogrubinstall, no-grubenv, noupdategrub, not-far
sda3 : is-os, 32, nopakmgr, no-docgrub, nogrub, nogrubinstall, no-grubenv, noupdategrub, not-far
sdb1 : no-os, 32, nopakmgr, no-docgrub, nogrub, nogrubinstall, no-grubenv, noupdategrub, not-far
Partitions info (2/3): _________________________________________________________
sda4 : isnotESP, fstab-has-goodEFI, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot
sda1 : is---ESP, part-has-no-fstab, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot
sda3 : isnotESP, part-has-no-fstab, no-nt, haswinload, no-recov-nor-hid, no-bmgr, notwinboot
sdb1 : isnotESP, part-has-no-fstab, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot
Partitions info (3/3): _________________________________________________________
sda4 : not-sepboot, with-boot, fstab-without-boot, not-sep-usr, with--usr, fstab-without-usr, std-grub.d, sda
sda1 : not-sepboot, no-boot, part-has-no-fstab, not-sep-usr, no---usr, part-has-no-fstab, std-grub.d, sda
sda3 : not-sepboot, no-boot, part-has-no-fstab, not-sep-usr, no---usr, part-has-no-fstab, std-grub.d, sda
sdb1 : maybesepboot, no-boot, part-has-no-fstab, not-sep-usr, no---usr, part-has-no-fstab, std-grub.d, sdb
fdisk -l (filtered): ___________________________________________________________
Disk sda: 70.2 GiB, 75369676800 bytes, 147206400 sectors
Disk identifier: C8A6757F-8E2C-433B-9443-908C14024B22
Start End Sectors Size Type
sda1 2048 206847 204800 100M EFI System
sda2 206848 239615 32768 16M Microsoft reserved
sda3 239616 103564765 103325150 49.3G Microsoft basic data
sda4 103567360 146141183 42573824 20.3G Linux filesystem
Disk sdb: 40.58 GiB, 43552735232 bytes, 85063936 sectors
Disk identifier: F1F26032-8293-4FA3-9DD7-26B596A08F7A
Start End Sectors Size Type
sdb1 2048 85063679 85061632 40.6G Linux filesystem
parted -lm (filtered): _________________________________________________________
sda:75.4GB:scsi:512:512:gpt:ATA VBOX HARDDISK:;
1:1049kB:106MB:105MB:fat32:EFI system partition:boot, esp;
2:106MB:123MB:16.8MB::Microsoft reserved partition:msftres;
3:123MB:53.0GB:52.9GB:ntfs:Basic data partition:msftdata;
4:53.0GB:74.8GB:21.8GB:ext4::;
sdb:43.6GB:scsi:512:512:gpt:ATA VBOX HARDDISK:;
1:1049kB:43.6GB:43.6GB:ext4::;
blkid (filtered): ______________________________________________________________
NAME FSTYPE UUID PARTUUID LABEL PARTLABEL
sda
├─sda1 vfat EC3F-70FA 6b936e07-6179-4a9d-8f47-5fb8b4be700c EFI system partition
├─sda2 075ee5f4-d3c8-4fc0-a300-d43fa5cb0f6b Microsoft reserved partition
├─sda3 ntfs EED4AD50D4AD1BB9 4763b382-7b29-4bb0-bf04-bc964a69151d Basic data partition
└─sda4 ext4 b5afe1f3-1b56-4d38-abe5-2395ffcd5aaa 9cf72085-0ea9-4018-9034-bf670c5466c9
sdb
└─sdb1 ext4 e400e99e-a76f-42a8-a120-d454ddcee09d 3d269221-7246-40cc-afbd-e2cc9caf91a4 clone_W10_focal
df (filtered): _________________________________________________________________
Avail Use% Mounted on
sda3 38.9G 21% /mnt/boot-sav/sda3
sda4 12G 35% /
sdb1 17.6G 50% /mnt/boot-sav/sdb1
Mount options: __________________________________________________________________
sda3 rw,relatime,user_id=0,group_id=0,allow_other,blksize=4096
sda4 rw,relatime,errors=remount-ro
sdb1 rw,relatime
===================== sda1/efi/ubuntu/grub.cfg (filtered) ======================
search.fs_uuid b5afe1f3-1b56-4d38-abe5-2395ffcd5aaa root hd0,gpt4
set prefix=($root)'/boot/grub'
configfile $prefix/grub.cfg
====================== sda4/boot/grub/grub.cfg (filtered) ======================
Ubuntu b5afe1f3-1b56-4d38-abe5-2395ffcd5aaa
Ubuntu, avec Linux 5.4.0-53-generic b5afe1f3-1b56-4d38-abe5-2395ffcd5aaa
Ubuntu, avec Linux 5.4.0-42-generic b5afe1f3-1b56-4d38-abe5-2395ffcd5aaa
Windows Boot Manager (sur sda1) osprober-efi-EC3F-70FA
### END /etc/grub.d/30_os-prober ###
UEFI Firmware Settings uefi-firmware
### END /etc/grub.d/30_uefi-firmware ###
========================== sda4/etc/fstab (filtered) ===========================
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/sda5 during installation
UUID=b5afe1f3-1b56-4d38-abe5-2395ffcd5aaa / ext4 errors=remount-ro 0 1
# /boot/efi was on /dev/sda1 during installation
UUID=EC3F-70FA /boot/efi vfat umask=0077 0 1
/swapfile none swap sw 0 0
======================= sda4/etc/default/grub (filtered) =======================
GRUB_DEFAULT=0
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""
==================== sda4: Location of files loaded by Grub ====================
GiB - GB File Fragment(s)
54,338119507 = 58,345111552 boot/grub/grub.cfg 1
55,067516327 = 59,128295424 boot/vmlinuz 1
53,143558502 = 57,062461440 boot/vmlinuz-5.4.0-42-generic 2
55,067516327 = 59,128295424 boot/vmlinuz-5.4.0-53-generic 1
53,143558502 = 57,062461440 boot/vmlinuz.old 2
51,095413208 = 54,863282176 boot/initrd.img 5
51,142261505 = 54,913585152 boot/initrd.img-5.4.0-42-generic 3
51,095413208 = 54,863282176 boot/initrd.img-5.4.0-53-generic 5
51,142261505 = 54,913585152 boot/initrd.img.old 3
===================== sda4: ls -l /etc/grub.d/ (filtered) ======================
-rwxr-xr-x 1 root root 17622 oct. 1 17:19 10_linux
-rwxr-xr-x 1 root root 42359 oct. 1 17:19 10_linux_zfs
-rwxr-xr-x 1 root root 12894 juil. 31 02:34 20_linux_xen
-rwxr-xr-x 1 root root 12059 juil. 31 02:34 30_os-prober
-rwxr-xr-x 1 root root 1424 juil. 31 02:34 30_uefi-firmware
-rwxr-xr-x 1 root root 214 juil. 31 02:34 40_custom
-rwxr-xr-x 1 root root 216 juil. 31 02:34 41_custom
Suggested repair: ______________________________________________________________
The default repair of the Boot-Repair utility would reinstall the grub-efi-amd64-signed of
sda4,
using the following options: sda1/boot/efi,
Additional repair would be performed: unhide-bootmenu-10s win-legacy-basic-fix use-standard-efi-file
Final advice in case of suggested repair: ______________________________________
Please do not forget to make your UEFI firmware boot on the L'OS actuellement utilisé - Ubuntu 20.04.1 LTS CurrentSession entry (sda1/efi/****/shim****.efi (**** will be updated in the final message) file) !
If your computer reboots directly into Windows, try to change the boot order in your UEFI firmware.
If your UEFI firmware does not allow to change the boot order, change the default boot entry of the Windows bootloader.
For example you can boot into Windows, then type the following command in an admin command prompt:
bcdedit /set {bootmgr} path \EFI\****\shim****.efi (**** will be updated in the final message)
Par comparaison entre le Boot-info initial et final, on peut voir que seule la partition système de Win10 (sda3) a changé d'UUID, ce qui est normal puisque j'ai demandé le formatage pendant l'installation de Win10. Par contre, les autres partitions ont conservé leur taille et leur UUID.
On peut noter que le taux d'ocupation de la partition sda3 est passé de 31% à 21% mais c'est seulement parce que la nouvelle install de Windows est toute propre, pas encore mise à jour.
