I install manjaro in my second SSD, but grub don’t show windows
I try sudo update grub
and things like that, but nothing
I have ASUS UEFI bios, I think that’s make a difference?
its my first linux try
Welcome back!
There’s another option in /etc/default/grub you missed (based on your other thread).
GRUB_DISABLE_OS_PROBER=false
This will enable the OS prober to find and make an entry for Windows’ EFI bootloader.
Either uncomment that line or write it out as a new option on its own line.
I have this but nothing
Pleas open a terminal window and enter
test -d /sys/firmware/efi && echo efi || echo bios
sudo parted -l
and post output here.
This will help us to determine if both OS are installed in the same mode, i.e. both in UEFI mode or both in BIOS mode. The grub boot menu only allows to boot Windows if it’s installed in the same mode.
Also make sure Fast boot is disabled in Windoze completely, otherwise it could only hibernate when “shutting down” and this could form issues in accessing the Windoze system disk from another operating system.
bios
Model: ATA KINGSTON SA400S3 (scsi)
Disk /dev/sda: 240GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags
1 1049kB 106MB 105MB fat32 EFI system partition boot, esp
2 106MB 123MB 16,8MB Microsoft reserved partition msftres
3 123MB 240GB 239GB ntfs Basic data partition msftdata
4 240GB 240GB 543MB ntfs hidden, diag
Model: ATA CT240BX500SSD1 (scsi)
Disk /dev/sdb: 240GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags
1 1049kB 9437kB 8389kB ext4
2 9437kB 16,8GB 16,8GB linux-swap(v1) swap, legacy_boot
3 16,8GB 240GB 223GB ext4 legacy_boot
Model: ATA ST1000DM003-1CH1 (scsi)
Disk /dev/sdc: 1000GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags
1 595MB 1000GB 1000GB ntfs Basic data partition msftdata
Model: Kingston DataTraveler 3.0 (scsi)
Disk /dev/sdd: 15,5GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags
1 1049kB 15,5GB 15,5GB Ventoy msftdata
2 15,5GB 15,5GB 33,6MB fat16 VTOYEFI hidden, msftdata
Here we are, this indicates you have installed Manjaro in BIOS mode. Re-install it in UEFI mode. This is best done when you boot the installation USB stick via the “UEFI” marked entry form your firmware. The Manjaro ISO’s are of hybrid design, they allow both, installation in BIOS and in UEFI mode. You have to take care to choose the right version. 
Make sure the disk foreseen for the Manjaro OS keeps being formatted in GPT and not msdos with MBR.
More details are given in this tutorial:
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oh thx i will try reinstalling
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Slightly off topic, but I must admit that the people who designed these standards and technologies are terrible at naming things.
Even the term “BIOS” is ambigious, as someone can use it to refer to their motherboard’s firmware (even modern ones with UEFI) or to refer to legacy boot.
When it comes to installations and partitioning, it’s one of the reasons I describe it as the Linux “system” partition, rather than “root” or “/”, since “root” is ambigious and can refer to the user, the folder, top-level, and “/” can be confused with an “and/or” symbol.
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My solution was set bios as only UEFI so I run a usb in UEFI mode with manjaro using ventoy
Then reinstall manjaro, now shows manjaro and windows so was easy.
now just need install Discord and Rave and I will happy with this OS
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