Lenovo ThinkPad encounters a boot problem solution that is not accessible by the dual system Uefi Ubuntu

Recently because of the needs of many curriculum design, the installation of Ubuntu dual system, but the first encountered the installation of the future can not enter the problem, and then to fix the back of the guide to delete the left and again to remove, repeatedly, many times, the online experience is very outdated, or the latest UEFI does not apply, or for ThinkPad (or Lenovo) BIOS is not too compatible, so decided to write down this article, to help you solve the related issues. (Because I don't know how in the BIOS interface ...) So a lot of related images from the network, Hope forgive me)

Question one: The first time to install a dual system, why the ThinkPad computer has installed the Ubuntu system, but after the boot or directly into Windows without the option to enter Ubuntu?

At first this problem bothered me the longest, I started to install Ubuntu is used by the custom installation, later found no way to enter Ubuntu, open the computer press F12 found that only Windows Boost manager did not have Ubuntu, and then thought that they did not put up, Simply to empty the partition, and then installed again, the use of automatic installation, but found that there is no way to enter Ubuntu, during the full follow the tutorial but there is no way. Later found that this is the original ThinkPad and Lenovo computer common problem, because the computer itself, secure boot for the sake of turning off the normal access to Ubuntu.

　　workaround : Press F1 after booting, enter the BIOS, then select the Security tab, then select the Secure Boot option (press ENTER, do not press the right button, or go to the Startup tab), such as:

Then turn the secure Boot enabled to Disabled

F10 Save exit. This will allow you to enter the Ubuntu system after rebooting! (But in general the default is the Ubuntu boot winows, also is the default to enter Ubuntu, if you want to change the words of Baidu on their own good)

Question two: accidentally deleted the Ubuntu start-up with EASYBCD, now although the relevant data of Ubuntu has not moved, but there is no way to enter Ubuntu, how to do?

The key to this time depends on whether the UEFI-related files are still absent. If you're still there, the key question is how to add a boot that will allow Ubuntu to be identified when it's turned on. The usual method of online is to boot into the BIOS after booting, in a security option to include Ubuntu related files on the trusted list, but the problem is that the ThinkPad BIOS does not have this option (I am also very desperate), so this method obviously can not be used. My solution is to use third-party software to solve this problem.

　　workaround : First, download the micro-PE toolbox, which is a very useful maintenance tool (I really am not advertising ah hello). To download, click here to download the website. After installation, a reboot is required to enter micro-PE, which provides a number of useful tools that we can use to solve related problems. In particular, however, the

Need to upgrade to V1.3.3 version above, specific can go to the Internet download, because the lower version of the Bootice does not have this one paging (such as):

　

　　

The feature of this paging is that we have the EFI file on the basis of the boot item, so we need to upgrade.

When you've upgraded him, we'll restart the computer and go into the micro-PE toolbox. Then find the Diskgenius in the Start menu, find the name of the system (if not mistaken is called the name) of the disk, click in to find the EFI folder, if there is Ubuntu, it means that the relevant files are still, you just need to give EFI disk name, So he can be found by Bootice.

Then open Bootice, select the Uefi tab, the store modifies the boot sequence, then click Add on the left, find the disk you just named, then click on the Gold Efi/ubuntu, select the. efi file where grub begins. This way, Ubuntu is added. Save the restart will be able to enter the Ubuntu interface (if you do not directly enter, this time you in the boot interface press F12, so you will see below the Ubuntu Startup items, click on the can enter). Problem solving.

Question three: Why do I follow the online tutorial, using EASYBCD operation there is no way to solve my problem?!!

Because those tutorials are too old. Since WIN8, most vendors have used UEFI that differs from previous grub (legency) (specifically, I don't know ...). Everyone can own Baidu), and EASYBCD does not solve the UEFI boot related issues (this point EasyBCD himself also admits that When you enter the EASYBCD2.3 version of the software, he will not be able to solve the uefi problem, so if your computer is bought after 15, basic can be 100% OK easybcd that set of things you can't solve the problem. So I can only go a few ways.

Generally, because it is not very good, and too lazy to take photos, so the picture may be some less forgive you ... I wish you a pleasant use of Ubuntu.

Lenovo ThinkPad encounters a boot problem solution that is not accessible by the dual system Uefi Ubuntu