Dualboot with Win10: Can't boot to Manjaro any more

[stephane]

@fahrer17

UEFI-[Legacy]: LENOVO
test -d /sys/firmware/efi && echo efi || echo bios :bios
/dev/sda vendor: Samsung model: SSD 850 EVO 500GB scheme: MBR

Gerät      Boot    Anfang      Ende  Sektoren  Größe Kn Typ
/dev/sda1  *         2048   1126399   1124352   549M  7 HPFS/NTFS/exFAT
/dev/sda2         1126400 565887484 564761085 269,3G  7 HPFS/NTFS/exFAT
/dev/sda3       565889024 567169023   1280000   625M 27 Verst. NTFS WinRE
/dev/sda4       567171072 976768064 409596993 195,3G  5 Erweiterte
end partitions for MBR ( max 4 only )
/dev/sda5       567173120 608133119  40960000  19,5G 83 Linux
/dev/sda6       608135168 624519167  16384000   7,8G 82 Linux Swap / Solaris
/dev/sda7       624521216 976768064 352246849   168G 83 Linux

you have booted & installed in a UEFI failback mode bios -MBR
manjaro do not use LVM to get more than 4 partitions on disks MBR

so if you want to install , first
do backup all datas from windows
suppress all partitions sda5 to sda 7

*** DO BACKUP for windows ***
then see for conversion

Change a Master Boot Record (MBR) into a GUID partition table (GPT) disk

with GPT , you will have

• /boot/efi 100Mo
• MSR 16Mo hidden
• more than 16 partitions

for install manjaro

UEFI, create a profile and save for Windows and another for linux

recheck all option in your UEFI ( for linux)

SecureBoot off
Fast Boot off
No CSM
No Legacy
all disks on AHCI

boot only on UEFI:<partition 1> → EFI install manjaro

you can check in terminal , before install

inxi  -Fxza
test -d /sys/firmware/efi && echo efi || echo bios
sudo efibootmgr -v
sudo parted -l 

*** do not format /boot/efi , only add after for mountpoint ***