Ubuntu 14.04 single-boot with UEFI-mode enabled

I recently purchased a Dell Vostro 5470 with a pre-installed Windows 8 OEM on a HDD 500GB. Now I'm trying to replace the HDD with a Sandisk SSD 240GB as my main disk (next step will be use the HDD with Win8 in a USB external case).

Here's the deal: I was able to install Ubuntu 14.04 in the SSD, however it can't boot with UEFI mode enabled since the installation with UEFI mode is not working (yes, I want it to work in UEFI mode, and I know it can).

I already followed the instructions to create a EFI partition: I created a GPT partition table along with a Fat32 partition, with EFI as label, and with the boot flag. Here's the output of parted -l

Model: ATA SanDisk SDSSDHII (scsi)
Disk /dev/sda: 240GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size    File system     Name  Flags
 1      1049kB  2097kB  1049kB                        bios_grub
 2      2097kB  540MB   538MB   fat32                 boot
 3      540MB   59,6GB  59,1GB  ext4
 4      59,6GB  68,2GB  8591MB  linux-swap(v1)
 5      68,2GB  240GB   172GB   ext4

I run the Ubuntu installer, but it doesn't recognize as an EFI partition. Then, I proceed with installation and later try to use the boot-repair tool, however the option "separated /boot/efi partition" is never enabled.

How can I get this SSD running Ubuntu 14 with UEFI mode enabled?

Solution 1:

If your motherboard fully supports UEFI mode, enable that. Then, make sure when selecting your flash drive, you boot into UEFI mode. To do this, I recommend using dd. To find your flash drive

sudo fdisk -l

Let's say it responds with

/dev/sda
/dev/sda1
250 gb
/dev/sdb
/dev/sdb1
14.9 gb

Then you would

dd bs=4M if=/path/to/Ubuntu.iso of=/dev/sdb

To further clarify,
bs=4m Is the base size of four megabytes, a number that I found to be fast and stable with my devices.
if=/path/to/Ubuntu.iso Input file, and then the path to the file. (Right click the file, click copy, and click the terminal and select 'Paste filenames'
of=/dev/sdb Output file (usb stick, should be discovered with sudo fdisk -l and selected based on size)

After successful boot in UEFI mode, install and make a ~100 mb partition and make it an 'EFI boot partition'. That should be it.

Ubuntu 14.04 single-boot with UEFI-mode enabled

Solution 1:

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