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#1 Le 16/06/2025, à 17:59

madeinmars

Plus de dualboot possible [Résolu]

Bonjour tout le monde,

Je ne sais pour quelle raison mais je n'ai plus de dualboot possible au démarrage; mon ordi démarre uniquement sur Windows.
J'ai essayé de voir sur le Bios, avec ou sans secure boot mais rien n'y fait.
Avec un démarrage par F9 (bootmenu), je n'ai plus la ligne Ubuntu, uniquement Windows et le SSD. Mais en démarrant sur le SSD il me dit que ce n'est pas un disque bootable.
Enfin, avec un démarrage avec un fichier EFI, j'arrive automatiquement sur l'écran noir style DOS avec Grub> en sélectionnant boot from file>BOOT>EFI>ubuntu>grubx64.efi

Il y a peu, le dual boot fonctionnait normalement, mais depuis quelques temps, plus que windows.

Configuration:
probook, 8Go de Ram, 2 DD (1 NVMe déactivé par Bios et 1 SSD Samsung 500go)

Voici le résultat du bootrepair (qui n'a rien changé)

boot-repair-4ppa2074                                              [20250616_1536]

============================== Boot Info Summary ===============================

 => No boot loader is installed in the MBR of /dev/nvme0n1.
 => No boot loader is installed in the MBR of /dev/sda.

nvme0n1p1: _____________________________________________________________________

    File system:       vfat
    Boot sector type:  FAT32
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files:        /efi/Boot/bkpbootx64.efi /efi/Boot/bootx64.efi 
                       /efi/Boot/grubx64.efi /efi/ubuntu/grubx64.efi 
                       /efi/ubuntu/shimx64.efi 
                       /efi/HP/BIOSUpdate/BiosMgmt.efi 
                       /efi/HP/BIOSUpdate/CryptRSA.efi 
                       /efi/HP/SystemDiags/CryptRSA.efi 
                       /efi/HP/SystemDiags/SysDiags.efi 
                       /efi/Microsoft/Boot/bootmgfw.efi 
                       /efi/Microsoft/Boot/bootmgr.efi

nvme0n1p2: _____________________________________________________________________

    File system:       
    Boot sector type:  -
    Boot sector info: 

nvme0n1p3: _____________________________________________________________________

    File system:       ntfs
    Boot sector type:  NTFS
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  Windows 8 or 10
    Boot files:        /Windows/System32/winload.exe

sda1: __________________________________________________________________________

    File system:       ntfs
    Boot sector type:  NTFS
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files:        

sda2: __________________________________________________________________________

    File system:       vfat
    Boot sector type:  FAT32
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files:        /efi/Boot/bkpbootx64.efi /efi/Boot/bootx64.efi 
                       /efi/Boot/fbx64.efi /efi/Boot/grubx64.efi 
                       /efi/Boot/mmx64.efi /efi/ubuntu/grubx64.efi 
                       /efi/ubuntu/mmx64.efi /efi/ubuntu/shimx64.efi 
                       /efi/ubuntu/grub.cfg 
                       /efi/Microsoft/Boot/SecureBootRecovery.efi 
                       /efi/Microsoft/Boot/bootmgfw.efi 
                       /efi/Microsoft/Boot/bootmgr.efi

sda3: __________________________________________________________________________

    File system:       
    Boot sector type:  -
    Boot sector info: 

sda4: __________________________________________________________________________

    File system:       ntfs
    Boot sector type:  NTFS
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  Windows 10 or 11
    Boot files:        /Windows/System32/winload.exe

sda5: __________________________________________________________________________

    File system:       ntfs
    Boot sector type:  NTFS
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files:        

sda6: __________________________________________________________________________

    File system:       ext4
    Boot sector type:  -
    Boot sector info: 
    Operating System:  Ubuntu 22.04.5 LTS
    Boot files:        /boot/grub/grub.cfg /etc/fstab /etc/default/grub

sdb: ___________________________________________________________________________

    File system:       iso9660
    Boot sector type:  Unknown
    Boot sector info: 
    Mounting failed:   mount: /mnt/BootInfo/FD/sdb: /dev/sdb already mounted or mount point busy.


================================ 3 OS detected =================================

OS#1:   Ubuntu 22.04.5 LTS on sda6
OS#2:   Windows 8 or 10 on nvme0n1p3
OS#3:   Windows 10 or 11 on sda4

================================ Host/Hardware =================================

CPU architecture: 64-bit
Video: WhiskeyLake-U GT2 [UHD Graphics 620] from Intel Corporation
Live-session OS is Linuxmint 64-bit (Linux Mint 21.2, victoria, x86_64)

===================================== UEFI =====================================

BIOS/UEFI firmware: R71 Ver. 01.19.00(19.0) from HP
The firmware is EFI-compatible, and is set in EFI-mode for this live-session.
SecureBoot disabled (confirmed by mokutil).
BootCurrent: 0003
Timeout: 0 seconds
BootOrder: 0003,0008,0000,0004,0005,0001
Boot0000* WDC PC SN520 SDAPNUW-256G-1006-192262805004	PciRoot(0x0)/Pci(0x1d,0x4)/Pci(0x0,0x0)/NVMe(0x1,00-1B-44-8B-44-C7-68-18)N.....YM....R,Y.....ISPH
Boot0001* WDC PC SN520 SDAPNUW-256G-1006-192262805004	BBS(HD,WDC PC SN520 SDAPNUW-256G-1006-192262805004,0x400)/PciRoot(0x0)/Pci(0x1d,0x4)/Pci(0x0,0x0)/NVMe(0x1,00-1B-44-8B-44-C7-68-18)......ISPH
Boot0003* PNY Technologies USB 2.0 FD AA00000000005241	PciRoot(0x0)/Pci(0x14,0x0)/USB(3,0)N.....YM....R,Y.....ISPH
Boot0004  USB:  	BBS(65535,,0x0)/PciRoot(0x0)/Pci(0x14,0x0)......ISPH
Boot0005* Samsung SSD 860 EVO 500GB 	BBS(HD,Samsung SSD 860 EVO 500GB ,0x400)/PciRoot(0x0)/Pci(0x17,0x0)/Sata(0,65535,0)......ISPH
Boot0007* IPV6 Network - Realtek PCIe GBE Family Controller	PciRoot(0x0)/Pci(0x1d,0x0)/Pci(0x0,0x0)/MAC(80e82c247b60,0)/IPv6([::]:<->[::]:,0,0)N.....YM....R,Y.....ISPH
Boot0008* Windows Boot Manager	HD(2,GPT,3e217bdd-fc39-4ec7-8825-3ea90a896b91,0xfa000,0x32000)/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....................ISPH
Boot0009* \EFI\Boot\grubx64.efi	PciRoot(0x0)/Pci(0x1d,0x4)/Pci(0x0,0x0)/NVMe(0x1,00-1B-44-8B-44-C7-68-18)/HD(1,GPT,086c5581-84e1-41b2-a7d6-5b94b7177fb7,0x800,0xf9800)/File(\EFI\Boot\grubx64.efi)....ISPH
Boot000B* IPV6 Network - Realtek PCIe GBE Family Controller	PciRoot(0x0)/Pci(0x1d,0x0)/Pci(0x0,0x0)/MAC(80e82c247b60,0)/IPv6([::]:<->[::]:,0,0)N.....YM....R,Y.....ISPH

58f24185ca254354dc7de9d1998c67dd   nvme0n1p1/Boot/bkpbootx64.efi
a1da253696a304dce6b4668b70151c0e   nvme0n1p1/Boot/bootx64.efi
637fa7fabc8a2f70312edf2f15e275ff   nvme0n1p1/Boot/grubx64.efi
637fa7fabc8a2f70312edf2f15e275ff   nvme0n1p1/ubuntu/grubx64.efi
78415fb8fb9b909f8029858113f1335f   nvme0n1p1/ubuntu/shimx64.efi
0f3207de86169d1e3cd2a225751c470b   nvme0n1p1/HP/BIOSUpdate/BiosMgmt.efi
6488d391f74263c9da3c3d47dffa6212   nvme0n1p1/HP/BIOSUpdate/CryptRSA.efi
6488d391f74263c9da3c3d47dffa6212   nvme0n1p1/HP/SystemDiags/CryptRSA.efi
3a03b12a096aa2246032ce445d44df8e   nvme0n1p1/HP/SystemDiags/SysDiags.efi
58f24185ca254354dc7de9d1998c67dd   nvme0n1p1/Microsoft/Boot/bootmgfw.efi
f79a631eca306432055c6a3b4aa1c10b   nvme0n1p1/Microsoft/Boot/bootmgr.efi
a1da253696a304dce6b4668b70151c0e   sda2/Boot/bkpbootx64.efi
a1da253696a304dce6b4668b70151c0e   sda2/Boot/bootx64.efi
85fa9d77b929ec4231aba29476574eb6   sda2/Boot/fbx64.efi
637fa7fabc8a2f70312edf2f15e275ff   sda2/Boot/grubx64.efi
469e608783843a701d172242f016c79c   sda2/Boot/mmx64.efi
a1da253696a304dce6b4668b70151c0e   sda2/ubuntu/grubx64.efi
469e608783843a701d172242f016c79c   sda2/ubuntu/mmx64.efi
728124f6ec8e22fbdbe7034812c81b95   sda2/ubuntu/shimx64.efi
31ae265044d7137c6a97584f14ee20ca   sda2/Microsoft/Boot/SecureBootRecovery.efi
65c83519858a9a19ad5efc4c2bb22330   sda2/Microsoft/Boot/bootmgfw.efi
43c490a49204212331e78d50790912ff   sda2/Microsoft/Boot/bootmgr.efi

============================= Drive/Partition Info =============================

Disks info: ____________________________________________________________________

nvme0n1	: is-GPT,	no-BIOSboot,	has---ESP, 	not-usb,	not-mmc, has-os,	has-win,	2048 sectors * 512 bytes
sda	: is-GPT,	no-BIOSboot,	has---ESP, 	not-usb,	not-mmc, has-os,	has-win,	2048 sectors * 512 bytes

Partitions info (1/3): _________________________________________________________

nvme0n1p1	: no-os,	64, nopakmgr,	no-docgrub,	nogrub,	nogrubinstall,	no-grubenv,	noupdategrub,	not-far
nvme0n1p3	: is-os,	64, nopakmgr,	no-docgrub,	nogrub,	nogrubinstall,	no-grubenv,	noupdategrub,	end-after-100GB
sda1	: no-os,	64, nopakmgr,	no-docgrub,	nogrub,	nogrubinstall,	no-grubenv,	noupdategrub,	not-far
sda2	: no-os,	64, nopakmgr,	no-docgrub,	nogrub,	nogrubinstall,	no-grubenv,	noupdategrub,	not-far
sda4	: is-os,	64, nopakmgr,	no-docgrub,	nogrub,	nogrubinstall,	no-grubenv,	noupdategrub,	end-after-100GB
sda5	: no-os,	64, nopakmgr,	no-docgrub,	nogrub,	nogrubinstall,	no-grubenv,	noupdategrub,	end-after-100GB
sda6	: is-os,	64, apt-get,	signed grub-efi ,	grub2,	grub-install,	grubenv-ok,	update-grub,	end-after-100GB

Partitions info (2/3): _________________________________________________________

nvme0n1p1	: is---ESP,	part-has-no-fstab,	no-nt,	no-winload,	no-recov-nor-hid,	no-bmgr,	notwinboot
nvme0n1p3	: isnotESP,	part-has-no-fstab,	no-nt,	haswinload,	no-recov-nor-hid,	no-bmgr,	notwinboot
sda1	: isnotESP,	part-has-no-fstab,	no-nt,	no-winload,	recovery-or-hidden,	no-bmgr,	notwinboot
sda2	: is---ESP,	part-has-no-fstab,	no-nt,	no-winload,	no-recov-nor-hid,	no-bmgr,	notwinboot
sda4	: isnotESP,	part-has-no-fstab,	no-nt,	haswinload,	no-recov-nor-hid,	no-bmgr,	notwinboot
sda5	: isnotESP,	part-has-no-fstab,	no-nt,	no-winload,	recovery-or-hidden,	no-bmgr,	notwinboot
sda6	: isnotESP,	fstab-has-goodEFI,	no-nt,	no-winload,	no-recov-nor-hid,	no-bmgr,	notwinboot

Partitions info (3/3): _________________________________________________________

nvme0n1p1	: not--sepboot,	no---boot,	part-has-no-fstab,	not-sep-usr,	no---usr,	part-has-no-fstab,	no--grub.d,	nvme0n1
nvme0n1p3	: not--sepboot,	no---boot,	part-has-no-fstab,	not-sep-usr,	no---usr,	part-has-no-fstab,	no--grub.d,	nvme0n1
sda1	: not--sepboot,	no---boot,	part-has-no-fstab,	not-sep-usr,	no---usr,	part-has-no-fstab,	no--grub.d,	sda
sda2	: not--sepboot,	no---boot,	part-has-no-fstab,	not-sep-usr,	no---usr,	part-has-no-fstab,	no--grub.d,	sda
sda4	: not--sepboot,	no---boot,	part-has-no-fstab,	not-sep-usr,	no---usr,	part-has-no-fstab,	no--grub.d,	sda
sda5	: not--sepboot,	no---boot,	part-has-no-fstab,	not-sep-usr,	no---usr,	part-has-no-fstab,	no--grub.d,	sda
sda6	: not--sepboot,	with-boot,	fstab-without-boot,	not-sep-usr,	with--usr,	fstab-without-usr,	std-grub.d,	sda

fdisk -l (filtered): ___________________________________________________________

Disk nvme0n1: 238.47 GiB, 256060514304 bytes, 500118192 sectors
Disk identifier: 35B2A6E4-C814-4BF9-92BF-D00748AA79E1
           Start       End   Sectors   Size Type
nvme0n1p1    2048   1023999   1021952   499M EFI System
nvme0n1p2 1024000   1286143    262144   128M Microsoft reserved
nvme0n1p3 1286144 500117503 498831360 237.9G Microsoft basic data
Disk sda: 465.76 GiB, 500107862016 bytes, 976773168 sectors
Disk identifier: DC1E7968-F186-4A30-AADF-68220CFCD6D4
         Start       End   Sectors   Size Type
sda1       2048   1023999   1021952   499M Windows recovery environment
sda2    1024000   1228799    204800   100M EFI System
sda3    1228800   1261567     32768    16M Microsoft reserved
sda4    1261568 289988828 288727261 137.7G Microsoft basic data
sda5  289990656 291450879   1460224   713M Windows recovery environment
sda6  291452928 976771071 685318144 326.8G Linux filesystem
Disk sdb: 15.24 GiB, 16358768640 bytes, 31950720 sectors
Disk identifier: 0x14eb2669
     Boot   Start      End  Sectors  Size Id Type
sdb1  *          0  5138431  5138432  2.5G  0 Empty
sdb2           572     9067     8496  4.1M ef EFI (FAT-12/16/32)
sdb3       5140480 31950719 26810240 12.8G 83 Linux

parted -lm (filtered): _________________________________________________________

sda:500GB:scsi:512:512:gpt:ATA Samsung SSD 860:;
1:1049kB:524MB:523MB:ntfs:Basic data partition:hidden, diag;
2:524MB:629MB:105MB:fat32:EFI system partition:boot, esp;
3:629MB:646MB:16.8MB::Microsoft reserved partition:msftres;
4:646MB:148GB:148GB:ntfs:Basic data partition:msftdata;
5:148GB:149GB:748MB:ntfs::hidden, diag;
6:149GB:500GB:351GB:ext4::;
sdb:16.4GB:scsi:512:512:msdos:PNY USB 2.0 FD:;
2:293kB:4643kB:4350kB:::esp;
3:2632MB:16.4GB:13.7GB:ext4::;
nvme0n1:256GB:nvme:512:512:gpt:WDC PC SN520 SDAPNUW-256G-1006:;
1:1049kB:524MB:523MB:fat32:EFI system partition:boot, esp;
2:524MB:659MB:134MB::Microsoft reserved partition:msftres;
3:659MB:256GB:255GB:ntfs:Basic data partition:msftdata;

Free space >10MiB: ______________________________________________________________

sdb: 4.43MiB:2510MiB:2506MiB

blkid (filtered): ______________________________________________________________

NAME        FSTYPE   UUID                                 PARTUUID                             LABEL                  PARTLABEL
sda                                                                                                                   
├─sda1      ntfs     3E6A4B5F6A4B12D7                     29ff88a2-0969-44c5-86e4-6d003fb4ceba Recovery               Basic data partition
├─sda2      vfat     9A4B-ADB6                            3e217bdd-fc39-4ec7-8825-3ea90a896b91                        EFI system partition
├─sda3                                                    431b6ed4-4d9b-4239-bb49-b2487723e2a4                        Microsoft reserved partition
├─sda4      ntfs     8E304D52304D4307                     35a1a223-dea6-4c08-983b-492e969580bb                        Basic data partition
├─sda5      ntfs     187AE8647AE83FDC                     b60e41e2-d28d-4db6-9094-8be69283d358                        
└─sda6      ext4     c3854395-b49b-4768-aed0-ba77345c81eb eaf55448-13b0-4588-954e-488b3ab0c8a5                        
sdb         iso9660  2023-12-23-05-05-55-00                                                    Boot-Repair-Disk 64bit 
├─sdb1      iso9660  2023-12-23-05-05-55-00               14eb2669-01                          Boot-Repair-Disk 64bit 
├─sdb2      vfat     8D6C-A9F8                            14eb2669-02                          ESP                    
└─sdb3      ext4     7c19feac-c586-4fea-8a57-a651bf6119fa 14eb2669-03                          writable               
nvme0n1                                                                                                               
├─nvme0n1p1 vfat     260C-F9FD                            086c5581-84e1-41b2-a7d6-5b94b7177fb7 BOOT                   EFI system partition
├─nvme0n1p2                                               f2dc5b2c-6d82-40b0-8db6-d439e4f4eda8                        Microsoft reserved partition
└─nvme0n1p3 ntfs     48920D70920D63B2                     96cfe6f0-092e-44d5-8e06-cebf72d2bd0b Windows                Basic data partition

Mount points (filtered): _______________________________________________________

                                                             Avail Use% Mounted on
/dev/nvme0n1p1                                              442.1M  11% /mnt/boot-sav/nvme0n1p1
/dev/nvme0n1p3                                              170.7G  28% /mnt/boot-sav/nvme0n1p3
/dev/sda1                                                   488.8M   2% /mnt/boot-sav/sda1
/dev/sda2                                                    32.1M  67% /mnt/boot-sav/sda2
/dev/sda4                                                       3G  98% /mnt/boot-sav/sda4
/dev/sda5                                                    87.9M  88% /mnt/boot-sav/sda5
/dev/sda6                                                    70.8G  73% /mnt/boot-sav/sda6
/dev/sdb1                                                        0 100% /cdrom

Mount options (filtered): ______________________________________________________

/dev/nvme0n1p1                                              vfat            rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro
/dev/nvme0n1p3                                              fuseblk         ro,relatime,user_id=0,group_id=0,allow_other,blksize=4096
/dev/sda1                                                   fuseblk         ro,relatime,user_id=0,group_id=0,allow_other,blksize=4096
/dev/sda2                                                   vfat            rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro
/dev/sda4                                                   fuseblk         ro,relatime,user_id=0,group_id=0,allow_other,blksize=4096
/dev/sda5                                                   fuseblk         ro,relatime,user_id=0,group_id=0,allow_other,blksize=4096
/dev/sda6                                                   ext4            rw,relatime
/dev/sdb1                                                   iso9660         ro,noatime,nojoliet,check=s,map=n,blocksize=2048,iocharset=utf8

===================== sda2/efi/ubuntu/grub.cfg (filtered) ======================

search.fs_uuid c3854395-b49b-4768-aed0-ba77345c81eb root hd0,gpt6 
set prefix=($root)'/boot/grub'
configfile $prefix/grub.cfg

====================== sda6/boot/grub/grub.cfg (filtered) ======================

Ubuntu   c3854395-b49b-4768-aed0-ba77345c81eb
Windows Boot Manager (on nvme0n1p1)   osprober-efi-260C-F9FD
Windows Boot Manager (on sda2)   osprober-efi-9A4B-ADB6
### END /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_uefi-firmware ###

========================== sda6/etc/fstab (filtered) ===========================

# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda5 during installation
UUID=c3854395-b49b-4768-aed0-ba77345c81eb /               ext4    errors=remount-ro 0       1
# /boot/efi was on /dev/sda2 during installation
/swapfile                                 none            swap    sw              0       0
UUID=9A4B-ADB6  /boot/efi       vfat    defaults      0       1
/dev/disk/by-id/usb-JMicron_USB_to_ATA_ATAPI_Bridge_152D20329000-0:0 /mnt/usb-JMicron_USB_to_ATA_ATAPI_Bridge_152D20329000-0:0 auto nosuid,nodev,nofail,noauto,x-gvfs-show 0 0

======================= sda6/etc/default/grub (filtered) =======================

GRUB_DEFAULT=0
GRUB_TIMEOUT_STYLE=menu
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""
GRUB_DISABLE_OS_PROBER=false

==================== sda6: Location of files loaded by Grub ====================

           GiB - GB             File                                 Fragment(s)
 144.493907928 = 155.149152256  boot/grub/grub.cfg                             1
 454.142742157 = 487.632056320  boot/vmlinuz                                   1
 454.142742157 = 487.632056320  boot/vmlinuz-5.15.0-134-generic                1
 352.842769623 = 378.862039040  boot/vmlinuz-6.8.0-49-generic                  2
 453.895736694 = 487.366836224  boot/vmlinuz-6.8.0-52-generic                  2
 453.895736694 = 487.366836224  boot/vmlinuz.old                               2
 242.804672241 = 260.709531648  boot/initrd.img                                2
 242.804672241 = 260.709531648  boot/initrd.img-5.15.0-134-generic             2
 156.958152771 = 168.532533248  boot/initrd.img-6.8.0-49-generic               3
 242.934734344 = 260.849184768  boot/initrd.img-6.8.0-52-generic               1
 242.934734344 = 260.849184768  boot/initrd.img.old                            1

===================== sda6: ls -l /etc/grub.d/ (filtered) ======================

-rwxr-xr-x 1 root root 18683 Dec 18  2022 10_linux
-rwxr-xr-x 1 root root 43031 Dec 18  2022 10_linux_zfs
-rwxr-xr-x 1 root root 14387 Dec 18  2022 20_linux_xen
-rwxr-xr-x 1 root root 13369 Dec 18  2022 30_os-prober
-rwxr-xr-x 1 root root  1372 Dec 18  2022 30_uefi-firmware
-rwxr-xr-x 1 root root   214 Dec 18  2022 40_custom
-rwxr-xr-x 1 root root   215 Dec 18  2022 41_custom



Suggested repair: ______________________________________________________________

The default repair of the Boot-Repair utility would reinstall the grub-efi of
sda6,
using the following options:  sda2/boot/efi
Additional repair would be performed: unhide-bootmenu-10s use-standard-efi-file restore-efi-backups

Final advice in case of suggested repair: ______________________________________

Please do not forget to make your UEFI firmware boot on the Ubuntu 22.04.5 LTS entry (sda2/efi/****/grub****.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\****\grub****.efi (**** will be updated in the final message)

Merci de votre aide.

Dernière modification par madeinmars (Le 16/06/2025, à 18:17)


The one who wears the crown is not the king necessarily.

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#2 Le 16/06/2025, à 18:17

madeinmars

Re : Plus de dualboot possible [Résolu]

Je m'auto-réponds.
Lors du démarrage par F9 en choisissant boot from file>BOOT>EFI>PCI...>ubuntu>grubx64.efi, je suis arrivé au grub puis, sous ubuntu j'ai utilisé "Grub Customizer" puis Fichier>installation dans le MBR et ça remarche.


The one who wears the crown is not the king necessarily.

Hors ligne