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I have installed Ubuntu 18.04.2 on an external hard drive. The details of the hard drive are: Storage: 500 GB Type: SSD Make: SanDisk

The installation happened seamlessly, but after I remove the live USB and restart the system, I am facing an issue.

I am seeing the Ubuntu drive option while I hit on the OS loader option (F12 key) and after I select to boot Ubuntu, its booting Windows 10 instead of Ubuntu. Here's the video of what is happening.

https://photos.app.goo.gl/YmDMvJWidwSGcvcb9

Here, when I open the drive, I see a EFI boot loader menu showing up on File Manager. I feel that there is some error with respect to EFI boot.

I am not able to figure out the fix for it. If someone can help me out with this, it would be a great help.

Thanks in advance.

  • Unless you want to use the same drive in other computers there's no reason to have an additional efi partition in it. The dual-boot works with the efi partition already in the internal drive and Ubuntu installed in the external drive (but you may have to use UEFI settings to boot Windows directly). – GabrielaGarcia Jul 12 at 12:09
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The problem got fixed. The issue was being raised because, while installation, I was choosing Something else option for partitioning the Disk manually. I reinstalled the OS by selecting Erase Disk and Install and it worked seamlessly.

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