mjhjmtu

I installed Fedora(32-bit) for 1st time. I tried to set my dual-booted(Windows 7 & Ubuntu 14.04) BIOS-PC to triple-boot with Fedora 26 without fruit.

I started as below...

1. 
   

   Created 3 standard partitions instead of LVM partition:

   
   
   
   • 
     / - encrypted,ext4, 10 GB.
   
   
   • 
     /boot - unencrypted,ext4.
   
   
   • 
     swap - unencrypted.
   
   


2. 
   

   I unchecked 'bootloader install' from Anaconda since there was already ubuntu-grub on MBR. At the end Installer says it successfully installed fedora. but after reboot, Fedora 26 was not listed on GRUB 2 boot menu. I ran sudo update-grub from Ubuntu terminal but result was unchanged. I can see those newly created partitions using sudo blkid.

   
   
   

   Here is the output of sudo blkid:

   
   
   

   /dev/sda1: LABEL="System Reserved" UUID="F2622FA6622F6F13" TYPE="ntfs"
   /dev/sda2: LABEL="Windows" UUID="FE703488703449A3" TYPE="ntfs"
   /dev/sda5: UUID="03f69c95-69fd-4302-adf3-96a495584a4c" TYPE="ext4"
   /dev/sda6: UUID="9087cac3-ee43-4c6b-9cf3-bf818697e239" TYPE="swap"
   /dev/sda7: LABEL="Common Drive" UUID="EA203DE0203DB483" TYPE="ntfs"
   /dev/sda8: UUID="1b498ed0-dd4c-4021-942f-4c20ba4bb79c" TYPE="crypto_LUKS" 
   /dev/sda9: LABEL="Fd-bt" UUID="720dc2b9-e1fe-4adc-a2de-10c26567729a" TYPE="ext4"
   /dev/sda10: LABEL="Fd-swp" UUID="d8b3cdd6-908f-4a5d-8ac5-9ec1dfb62fa6" TYPE="swap"
   

   
   

Here, sda8 is the Fedora root partition.

My question is how to fix or overcome this problem? Do I have to install some additional package for encrypted sda8 or something else?

Fedora 26 uses Anaconda as the installer. Anaconda doesn't make a distinction between the two GRUB2 stages when installing the boot loader; You either install GRUB2 completely, or not at all:

If you choose not to install a boot loader for any reason, you will
not be able to boot the system directly, and you must use another boot
method, such as a stand-alone commercial boot loader application. Use
this option only if you are sure you have another way to boot your
system. - Source https://docs.fedoraproject.org/f26/install-guide/install/Installing_Using_Anaconda.html#sect-installation-gui-storage-partitioning-bootloader

In short, not installing GRUB2 from Fedora/Anaconda means a world of hurt. Here's your best bet:

1. Reinstall Fedora 26 with the boot loader. This is going to sacrifice the GRUB2 stage1 installed by Ubuntu, but Fedora will then boot; Ubuntu will not. Make sure you use a separate boot partition for Fedora, like you've already done.


2. Use GRUB2's ability to load another configuration to create a menu entry which loads Ubuntu's GRUB2 configuration.

In other words, you'd be delegating ownership of the boot process to Fedora.

Loading the Ubuntu GRUB2 menu from Fedora

Here's approximately how to complete step two:

1. Boot Fedora


2. Mount your /boot partition if it's not already mounted: mount /boot
   


3. Update /etc/fstab to automatically mount Ubuntu's boot partition:

mkdir /mnt/ubuntu
echo "/dev/sda5 /mnt/ubuntu ext4 defaults,ro 0 0" >> /etc/fstab

4. Mount the Ubuntu boot partition: mount -t ext4 /dev/sda5 /mnt/ubuntu
   


5. Create a custom menu entry which simply loads Ubuntu's GRUB2 config. Append the following to /etc/grub.d/40_custom:

menuentry 'Ubuntu' --class gnu-linux --class gnu --class os $menuentry_id_option 'ubuntu-xyz'
set root='hd0,msdos5'
configfile /mnt/ubuntu/grub2/grub.cfg


6. Update Fedora's GRUB2 config so that it adds your new menu: grub2-mkconfig -o /boot/grub2/grub.cfg
   


7. Reboot and cross your finders.

Warning

This process is a delicate procedure. It's provided as a best-effort solution considering I do not have your computer in front of me. Don't be surprised if it doesn't work. Take any necessary backups and proceed with the full acknowledgement that it may go from bad to worse; You may have to wipe the disk and start over.