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Update BOOTLOADER.md
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BOOTLOADER.md
186
BOOTLOADER.md
@ -21,107 +21,133 @@ Supported filesystems by bootloaders, they will boot the OS only if the "_/boot_
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* If on UEFI use __elilo__ and change names to "_/etc/elilo.conf_" instead of "_/etc/lilo.conf_" and "_elilo_" instead of "_lilo_" in commands.
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`nano /etc/lilo.conf`
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* Inserting "_password=\<PASSWORD>_" inside an OS stanza will protect with a password that OS, but inserting "_password=\<PASSWORD>_" just before the stanzas and outside any of them will protect with a password the bootloader itself (notice the space inside stanzas)
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`boot = /dev/sda`
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`image = /boot/vmlinuz`
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` Label = <DISTRO_NAME>`
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` root = /dev/sda<PARTITION_NUMBER_OF_ROOT>`
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`other = /dev/sda<PARTITION_NUMBER_OF_FREEDOS>`
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` table = /dev/sda`
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` Label = FreeDOS`
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`other = /dev/sda<PARTITION_NUMBER_OF_WINDOWS>`
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` table = /dev/sda`
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` Label = Windows7`
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```
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boot = /dev/sda
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image = /boot/vmlinuz
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Label = <DISTRO_NAME>
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root = /dev/sda<PARTITION_NUMBER_OF_ROOT>
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other = /dev/sda<PARTITION_NUMBER_OF_FREEDOS>
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table = /dev/sda
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Label = FreeDOS
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other = /dev/sda<PARTITION_NUMBER_OF_WINDOWS>
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table = /dev/sda
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Label = Windows7
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```
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* Set boot entry
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`lilo -A /dev/sda 1`
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`lilo`
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```
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lilo -A /dev/sda 1
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lilo
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```
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* Prevent anyone but root of reading the config file (in case you used a password)
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`chmod 600 /etc/lilo.conf`
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## SYSLINUX
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* If on BIOS make directory and copy files accordingly
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`mkdir -p /boot/syslinux`
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`cp /usr/lib/syslinux/bios/*.c32 /boot/syslinux/`
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```
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mkdir -p /boot/syslinux
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cp /usr/lib/syslinux/bios/*.c32 /boot/syslinux/
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```
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* If on UEFI make directory and copy files accordingly
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`mkdir -p /boot/efi/EFI/syslinux`
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`cp -r /usr/lib/syslinux/efi64/* /boot/efi/EFI/syslinux/`
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```
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mkdir -p /boot/efi/EFI/syslinux
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cp -r /usr/lib/syslinux/efi64/* /boot/efi/EFI/syslinux/
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```
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* If on BIOS set boot entry
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`umount /dev/sda1`
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`syslinux --directory syslinux --install /dev/sda1`
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`mount /dev/sda1 /boot`
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```
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umount /dev/sda1
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syslinux --directory syslinux --install /dev/sda1
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mount /dev/sda1 /boot
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```
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* If on UEFI set boot entry using "_efibootmgr_"
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`umount /dev/sda1`
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`efibootmgr -c -d /dev/sda -p 1 -l /boot/efi/EFI/syslinux/syslinux.efi -L Syslinux`
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`mount /dev/sda1 /boot/efi`
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```
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umount /dev/sda1
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efibootmgr -c -d /dev/sda -p 1 -l /boot/efi/EFI/syslinux/syslinux.efi -L Syslinux
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mount /dev/sda1 /boot/efi
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```
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* Edit "_/boot/syslinux/syslinux.cfg_" if on BIOS or "_/boot/efi/EFI/syslinux/syslinux.cfg_" if on UEFI
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* "_splash.png_" is the splash screen image located in "_/boot/syslinux/_" if on BIOS or "_/boot/efi/EFI/syslinux/_" if on UEFI
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`PROMPT 1`
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`TIMEOUT 50`
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`MENU BACKGROUND splash.png`
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`DEFAULT <DISTRO_NAME>`
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`LABEL <DISTRO_NAME>`
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` MENU LABEL <DISTRO_NAME>`
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` LINUX /boot/vmlinuz`
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` INITRD /boot/initramfs.img`
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`LABEL FreeDOS`
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` MENU LABEL FreeDOS`
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` KERNEL chain.c32`
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` APPEND sda <PARTITION_NUMBER_OF_FREEDOS>`
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`LABEL Windows7`
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` MENU LABEL Windows7`
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` KERNEL chain.c32`
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` APPEND sda <PARTITION_NUMBER_OF_WINDOWS>`
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```
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PROMPT 1
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TIMEOUT 50
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MENU BACKGROUND splash.png
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DEFAULT <DISTRO_NAME>
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LABEL <DISTRO_NAME>
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MENU LABEL <DISTRO_NAME>
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LINUX /boot/vmlinuz
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INITRD /boot/initramfs.img
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LABEL FreeDOS
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MENU LABEL FreeDOS
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KERNEL chain.c32
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APPEND sda <PARTITION_NUMBER_OF_FREEDOS>
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LABEL Windows7
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MENU LABEL Windows7
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KERNEL chain.c32
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APPEND sda <PARTITION_NUMBER_OF_WINDOWS>
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```
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## GRUB Legacy
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* If on BIOS set boot entry (boot partition must be mounted)
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`mount /dev/sda1 /boot`
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`grub-install /dev/sda`
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```
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mount /dev/sda1 /boot
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grub-install /dev/sda
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```
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* If on UEFI set boot entry (boot partition must be mounted)
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`mount /dev/sda1 /boot/efi`
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grub-install /boot/efi`
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```
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mount /dev/sda1 /boot/efi
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grub-install /boot/efi
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```
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* Edit configuration file "_/boot/grub/menu.lst_"
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`default=0`
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`timeout=10`
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`splashimage=(hd0,0)/grub/splash.xpm.gz`
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`#hiddenmenu`
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`title <DISTRO_NAME> (<KERNEL_VERSION>)`
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` root (hd0,<PARTITION_NUMBER_OF_ROOT>)`
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` kernel /vmlinuz-<KERNEL_VERSION> ro root=/dev/sda5 rhgb quiet`
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` initrd /initramfs-<KERNEL_VERSION>.img`
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`title <DISTRO_NAME_alternative_kernel> (<ANOTHER_KERNEL_VERSION>)`
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` root (hd0,<PARTITION_NUMBER_OF_ROOT>)`
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` kernel /vmlinuz-<ANOTHER_KERNEL_VERSION> ro root=/dev/sda5 rhgb quiet`
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` initrd /initramfs-<ANOTHER_KERNEL_VERSION>.img`
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`title FreeDOS`
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` root (hd0,<PARTITION_NUMBER_OF_FREEDOS>)`
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` kernel /memdisk`
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` initrd (hd0,<PARTITION_NUMBER_OF_FREEDOS>)/fdboot.img`
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`title Windows 7`
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` root (hd0,<PARTITION_NUMBER_OF_WINDOWS>)`
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` chainloader /EFI/Microsoft/Boot/bootmgfw.efi`
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```
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default=0
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timeout=10
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splashimage=(hd0,0)/grub/splash.xpm.gz
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#hiddenmenu
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title <DISTRO_NAME> (<KERNEL_VERSION>)
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root (hd0,<PARTITION_NUMBER_OF_ROOT>)
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kernel /vmlinuz-<KERNEL_VERSION> ro root=/dev/sda5 rhgb quiet
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initrd /initramfs-<KERNEL_VERSION>.img
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title <DISTRO_NAME_alternative_kernel> (<ANOTHER_KERNEL_VERSION>)
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root (hd0,<PARTITION_NUMBER_OF_ROOT>)
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kernel /vmlinuz-<ANOTHER_KERNEL_VERSION> ro root=/dev/sda5 rhgb quiet
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initrd /initramfs-<ANOTHER_KERNEL_VERSION>.img
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title FreeDOS
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root (hd0,<PARTITION_NUMBER_OF_FREEDOS>)
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kernel /memdisk
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initrd (hd0,<PARTITION_NUMBER_OF_FREEDOS>)/fdboot.img
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title Windows 7
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root (hd0,<PARTITION_NUMBER_OF_WINDOWS>)
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chainloader /EFI/Microsoft/Boot/bootmgfw.efi
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```
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## GRUB 2
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* If on BIOS set boot entry (boot partition must be mounted)
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`mount /dev/sda1 /boot`
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`grub-install /dev/sda`
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```
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mount /dev/sda1 /boot
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grub-install /dev/sda
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```
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* If on UEFI set boot entry (boot partition must be mounted)
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`mount /dev/sda1 /boot/efi`
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`grub-install /boot/efi`
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```
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mount /dev/sda1 /boot/efi
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grub-install /boot/efi
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```
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* If Grub does not detect your OS run "_os-prober_" followed by "_update-grub_"
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* Or add the OS manually to the Grub config file "_/etc/grub.d/40_custom_"
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`menuentry "FreeDOS" {`
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`set root='(hd0,msdos2)'`
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`linux16 /memdisk`
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`initrd16 /fdboot.img`
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`chainloader +1`
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`}`
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`menuentry "Windows 7" {`
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`insmod part_msdos`
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`insmod ntfs`
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`insmod search_fs_uuid`
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`insmod ntldr`
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`search --fs-uuid --no-floppy --set=root 3482FBC382FB879E`
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`chainloader +1`
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`ntldr /bootmgr`
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`}`
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```
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menuentry "FreeDOS" {
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set root='(hd0,msdos2)'
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linux16 /memdisk
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initrd16 /fdboot.img
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chainloader +1
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}
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menuentry "Windows 7" {
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insmod part_msdos
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insmod ntfs
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insmod search_fs_uuid
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insmod ntldr
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search --fs-uuid --no-floppy --set=root 3482FBC382FB879E
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chainloader +1
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ntldr /bootmgr
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}
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```
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* Update config file
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`grub-mkconfig -o /boot/grub/grub.cfg`
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