Disable UEFI boot in Lenovo B470

How can we disable UEFI boot for B470 laptop?
I have checked the BIOS settings but found no options to select legacy boot option. Please help.

Hi
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Enter BIOS Setup by
Select Boot. It will display you the Boot Priority Order
Please share the details listed there
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Disabling UEFI boot or prioritizing legacy boot in dv6tqe-7000 laptop

Hey guys, I currently have windows 7 on my pavilion laptop. I'm trying to install ubuntu 14.04.1 LTS on it from the cd-rom drive. Unfortunately, the ubuntu installer does not detect my hard drive's windows 7 partition while booting in UEFI mode as Windows 7 was installed in legacy/bios mode.
I want to either disable UEFI booting or to make the bios prioritize BIOS/legacy boot ahead of UEFI so I can correctly install a second OS. Unfortunately, the bios options I see do not seem to allow me to switch to a legacy boot, they only allow me to change the boot priority within each of those modes. Is there any way for me to boot with legacy?
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Anyone?

HP ENVY H8-1414 beeps at boot up due to the lack of a UEFI boot source

I recently messed up my Windows installation, due to this I ordered recovery DVDs from HP. Following the instructions I was supplied with, I inserted the DVD into my computer to try to boot off of it. It did not show up in the list of boot sources when I went to the boot menu. I then realized that this likely had something to do with me disabling UEFI boot and using the legacy boot option, so I went into the BIOS to switch it to the UEFI boot option. Now when I turn it on all I get is 6 beeps, which is because my motherboard is trying to boot into a UEFI OS, but there is not one available. So my question is, what should I do now? I can't change it back to legacy boot since that requires Windows (you have to go through Windows to get to the bios) and I can't boot into Windows because it doesn't recognize the reinstall disk as a UEFI enabled device.

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Hi,
I purchased and installed a new wireless card (Intel Centrino N-6205) to replace the Realtek that came with my X220.
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Basically the BIOS checks for a valid Lenovo signature on the card and refuses to boot.
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Thanks for your replies.wE2wXQLV

UEFI will not get you around this issue. Lenovo whitelists their own wireless cards, so you cannot boot in any case with an unauthorized card. I have a Lenovo E430, and I also had that terrible realtek card. I found someone willing to help me on mydigitallife forums to modify a bios image to remove this whitelist. I got myself an Intel Centrino 6235, flashed the bios, installed the card, and I couldn't be happier with the results.
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SCCM 2012 R2 PXE Boot to Lenovo T540p 20BE

Can someone help me PXE Boot a Lenovo T540/T440 laptop? Is there some type of settings that need to be changed in the BIOS or something?
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Solved!
Go to Solution.

I'm guessing "Secure Boot" is supported in UEFI >= 2.2 ? So, that means W520 users should not bother with UEFI (Linux)? The kernel panic was caused by "trying to mount unknown block (0,0)"; so, apparently kernel chocked after trying to mount the persistent memory that saves the Lenovo UEFI/Bios?
I apologize for rambling, I'm trying to understand this issue a little better and the "accepted solution" is somewhat unclear. Thanks for any and all help.

Satellite C50-B with Win 8.1 - PXE error appeares using UEFI boot mode

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I think some value is missing when I switched to BIOS and back to UETI boot option but where is the laptop getting the setting to tell it to PXE/Network boot when its down the list and wake on LAN is disabled.

According to the automated support on the site I should do the following for Win 8
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Use the cursor keys to move to the Advanced menu.
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Does UEFI exist on Lenovo T61P running Windows 8.1?

Just installed Windows 8.1 on my Lenovo T61P and running great after fixing wi-fi issue. Need to know how to boot from CD in this new operating system, as BIOS is still same as from XP days. I have read I have to change from UEIF mode to Legacy mode but don't know where it is, it it even exists, or what. This is important as I am setting up rescue boot CD's to recover backups. I can only get into the BIOS Setup Utility screen. See no options for setting to legacy anywhere. Please help as I need to boot from CD to test out emergency options. Has to be a way I would think as I believe Windows 8.1 automatically puts this boot mode in UIFE but I have no issues with security and would like to keep this off if possible.
I have tried also to go in via the options route after stariting Windows. When I get to the screen that gives the option to do this, that option is missing. I read that "Lenovo preloaded Windows 8/8.1 is set up with UEFI boot. If your computer is not fitted with UEFI boot, you can only enter BIOS setup or UEFI firmware via the traditional method."
Last updated 26 Mar 2014.
Are there any downloads that will install this? Am I stuck in UEFI mode or what? Please comment. Am I in Legacy mode? How do I find out?
Is the Bios Update Utility for Windows 8 etc released 8/4/2013 the fix for this? Is this an installed feature or one that can only be run off a boot CD or USB? Looks like it only supports T420s and T420si. Sorry. need on for T61P.
Edit to say;
Forgot to add this info.
Bios vers. 2.3 (7LETDOWW)
Bios date 2012-02-27
CPU Type Intel Core 2 Duo CPU T9300
CPU Speed 2.5GHz
I did not know the BIOS checked out so new, as it must have been updated on my last warranted repair for this system. Is their an updated file that adds this UIFE to Legacy option in to some type of system setup screen on boot?
thanks and need help soon while I have time to do this.
Solved!
Go to Solution.

Hi,
Your T61p BIOS is pre-UEFI. The Win 8 install couldn't have changed that. You don't need to change anything.
To boot a CD, hit the power button and start tapping F12. That should bring up the boot menu. Select the CD.
[edit] You may find this interesting: https://forums.lenovo.com/t5/General-Discussion-Knowledge/What-is-UEFI-and-when-was-it-introduced-on...
Z.
The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc. The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored. ... GeezBlog
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Booting hangs at loading vmlinuz-arch.efi (UEFI boot)

Hello,
I have just installed Arch Linux on my desktop machine (UEFI motherboard) which contains drives & partitions as follows:
1. /dev/sda (~ 250 GB) with
1: Win 7 64 bit
2: ntfs partition for data
3: ntfs partition for programs
2. /dev/sdb (1 TB) with
1: ntfs
2: fat32 / vfat as the uefi partition thingy
3: linux fs with swap, root and home
I have followed the Beginners' Guide dow nto the letter.
So I used rEFInd to set up the UEFI boot manager. However, it hangs at using the vmlinuz-arch.efi file/partition (?) on boot.
I have tried booting with a new efibootmgr entry as well, but it still hangs.
At this point, I'd like to know:
How can I get rid of all the rEFInd boot manager entries?
What precisely do I have to do to get it working? I could, of course, read around on here all day, but I somehow won't really learn anything as I can't deduct the right path of action for myself. If the machine weren't my productive system I'd definitely "play" around a lot more, that's for sure.
Any advice is greatly appreciated.

henrik wrote:
Thanks for your reply.
s1ln7m4s7r wrote:
OK, i will post, maybe it can help you!
First you need to boot from the arch installation media in UEFI mode. Mount your system partitions and chroot into it.
If you only have refind and kernel files under /boot/efi/ you can delete all files (clearing the EFI partition).Then run
modprobe efivars
. If you want to remove any efi entry, you can do it with
efibootmgr -b <entry_number> -B
Ok I did that.
sed -i "s/root=PARTUUID=XXXXXXXX rootfstype=XXXX ro/root=UUID=$(blkid -s UUID -o value $(df -k /)) rootfstype=$(blkid -s TYPE -o value $(df -k /)) ro/" "/boot/refind_linux.conf"
You meant here for me as wlel to exchange the X's wit hthe corresponding keys, right? I mean I did it. Would not make sense to me to call the comman with lots of Xs.
The rest was quite easy, I paid a lot of attention and made sure I typed in everthing correctly.
I am now at a blank black screen and there is a white underscore flashing in the upper left corner.
edit Can't boot into Windows anymore. Can't repair the MBR / UEFI boot with the Windows 7 DVD either...
edit2 Did lots of googling and at least Win 7 works fine again.
No. All the code is for you to type exactly as it is. The only statements you need to replace are <drive_with_efi_partition> and <efi_partition_number> with your current setup. What the line you questioned does is to replace the lines with "root=PARTUUID=XXXXXXXX rootfstype=XXXX ro" using the linux "sed" command, in refind_linux.conf with "root=UUID=<autodetected_uuid_of_your_root_partiton> rootfstype=ext4 ro". That will only work with the original refind_linux.conf, so if you edited it, you need to rerun
cp -r /usr/lib/refind/config/refind_linux.conf /boot/
There are 3 main reasons that may caused you to boot into a black screen with nothing written on it.
1. By not writing the code as it is, and editing files by hand instead, you may have done something wrong;
2. Your computer is booting from the wrong uefi entry, intead of the one created earlier;
3. You need to have "nomodeset" in your kernel boot line.
When does the black screen apears? After selecting a refind entry from refind's menu? Right after the pc boots (refind menu does not appear)
Another thing. In order for you to have access to windows, you need to edit refind.conf windows corresponding entry and remove the disabled statement or it wont appear on refind menu
Last edited by s1ln7m4s7r (2013-04-05 17:02:18)

Disabled Secure BOOT option in G580 Bios options

How do I disable this setting in the Bios? Do I have to turn in off in Windows 8 first?
I have the option but I can not arrow to it and turn it off or on. Only way to disable it is by brute force and turn off UEFI boot option and set it as Legacy.
I am obviously missing something.
Solved!
Go to Solution.

You don't have to disable it ........... Just when you are shutting down the device Press (SHIFT + SHUTDOWN from the power menu) .........
This will do it

[SOLVED, sort of] Yet another UEFI boot issue

Hello everyone,
Let me start by saying sorry for the long (first) post.
I've ended up with a UEFI boot problem I can't solve. I've searched the forum and internet and I realize I'm not the only one who ran into problems with UEFI. Unfortunately, the problems other have had seem not similar to mine. I've spent almost 2 days now trying to figure this out, and I'm getting nowhere (though I've learnt some more about UEFI, which I guess is good). I was hoping someone here can give me some hints on how to proceed.
So lets start with the background. I recently bought a new computer (Lenovo Thinkpad Edge E530 with Windows 8) and of course I want to run ArchLinux on it (been using ArchLinux for almost 7 years now and no plans on switching). Installation went ok with only a few problems during installation that I managed to solve (or so I thought). I must admit I didn't follow the guide fully. I didn't want to remove the Restore and Windows partitions, so I figured it would be safe to reuse the existing UEFI System Partition, as long as there was enough room, which there was. Anyway, I now have a computer I can boot into ArchLinux and also Windows 8, just the way I want it, almost. There is this one final issue I haven't been able to figure out how to solve.
The problem
Whenever I reset/power on the computer, I must press Enter during the initial screen (showing a Lenovo logo, and a message about pressing Enter to interrupt normal startup). If I don't press Enter before the timeout (a second or so), the screen will go white and that's it. No beep, no message, no nothing but a white screen. A power cycle is the only way to leave this state. Occasionally the screen will be a white bar at the top and random colours below, but I'm guessing this only represents what is in graphics memory at the time (0x00, 0xFF or any other random value).
If i do press Enter however, then I'm presented with a menu where I can select what to boot; rEFInd (which is preselected) along with Windows 8 and some restore and diagnostic entries. Pressing enter will take me to the preselected rEFInd, pressing enter again (or wait for timeout) will boot linux, and I'm in. Nothing weird there. And if I select Windows in rEFInd, then windows boot, just as expected.
There is no difference whether I'm switching from Windows to Linux or Linux to Windows or just reboot the same OS I was using again. The result is the same whatever I choose to boot.
So the question is: Why do I have to select rEFInd manually and go through all these menus? Should I not be able to just power it on and let it boot the preselected rEFInd entry and continue from there, without me helping it?
Trying to solve it
Searching here and on the internet gave me some ideas on what to try, so here is a list of my attempts:
efibootmgr show me there is a rEFInd entry, and that it is the first one in boot order
I copied refindx64.efi to /boot/efi/EFI/Boot/bootx64.efi (replacing an existing entry)
I've updated the EFI firmware (from Lenovo) to the latest and greatest
One other guy had almost the same issue, but with a single boot of Windows. He solved it with Microsoft Boot Manager (there is an Automatic Repair, or something). I even dared trying this, though I must admit I was a bit hesitant about letting some Microsoft program trying to repair my computer. Anyway, it said it couldn't repair my problem, nor did it say I had one, so I am none the wiser.
None of the above gave anything.
So, that's it. I guess I can live with having to press Enter on every power up/reset, but it is very annoying having to do so, and even more so when I forget it because then I'm forced to power cycle it. I hope someone reading this can figure out what's going on, because I am clueless.
Best regards,
Johan
Last edited by 6feet5 (2013-01-08 19:03:50)

WonderWoofy wrote:@srs5694, have you thought about filing a bug report/feature request about the naming scheme here? I would imagine that something coming directly from the upstream developer would be something that they should take into consideration. Also, I imagine that renaming it to refindx64.efi kind of goes against the whole "vanilla packages" thing we tout around here... so it really makes me wonder why it is done in the first place.
I've just done that:
https://bugs.archlinux.org/task/33326
It's not been very important until recently; but I've been putting a lot of effort into the ancillary support scripts (install.sh and mvrefind.sh). They necessarily rely on the files having certain names, so installing them under other names robs users of functionality.
6feet5 wrote:I've decided to try and restore the whole unit, thinking it would take maybe an hour or two. It's been running now for almost 3 hours and only completed 20%.
Good luck with that!
FWIW, it seems that the number of EFI-related bug reports on Linux forums has gone way up recently. No doubt this is because EFI is now pretty much universal on new computers, so problems that used to affect one or two people now affect dozens or hundreds, and some of those post about them.

[SOLVED] UEFI-boot on Intel-NUC

Anyone got UEFI-boot working on Intel NUC?
In BIOS i have enabled UEFI and disabled secure boot.
With the latest bootable arch media it boots okay in UEFI-mode.
ls -l /sys/firmware/efi shows a list of files.
If i boot into UEFI shell v 2.0 (from the USB) i can start arch with
fs1:\EFI\arch_grub\grubx64.efi
I have followed the installation guide and created a EFI (fat32) partition on GPT.
I tried to add the entry with both efibootmgr and bcfg, but it doesn't seem like it's being read. I find the entries with bcfg boot dump, but not in intels BIOS under (boot drive order)
It only gives me "a bootable device has not been detected" on startup
Last edited by cybe-arch (2013-08-21 10:29:30)

cybe-arch wrote:
I have followed the installation guide and created a EFI (fat32) partition on GPT.
I tried to add the entry with both efibootmgr and bcfg, but it doesn't seem like it's being read. I find the entries with bcfg boot dump, but not in intels BIOS under (boot drive order)
Please tell us the exact commands you used, and the errors you get, I don't know if I have an answer after that, but now I definitely don't.

[SOLVED] Disable Secure Boot on Asus Zenbook UX32A

Hi all, I hope I have posted in the right section, please move it otherwise.
I'm trying to install Arch on an Asus Zenbook, but I cannot boot installation media (an USB stick, in this case), as it requires the EFI binary to be signed, and only simple way out is to disable Secure Boot.
Unfortunately I'm not able to disable it from UEFI interface, as it is grayed out. Solutions I've found searching the Web suggested to set a password to BIOS, but even this way I wasn't able to enable it.
Notebook came with Windows 8 built in, and I upgraded BIOS to 214 version.
Thank you.
Last edited by juma93 (2013-03-30 01:29:05)

Details of the user interface vary greatly from one computer to another. I've got some notes on disabling Secure Boot on an ASUS P8H77-I motherboard here, but they may not apply to your notebook, or there may be an extra trick. Along the latter lines, look for "fast boot" and "CSM" options and try fiddling with them to see if the Secure Boot option becomes alterable.

I can't disable secure boot.

This is actually rediculous and i've seen so many people become infuriated over this same issue that SHOULDN'T be an issue at all. I've been trying for FOUR hours to install ubuntu and get rid of shi**y windows 8.1. That's right FOUR hours. Not only have I had to redo the USB write to make it bootable multiple times i've had to sit through countless slow reboots because 8.1 is just a piece of malware that i've had to deal with for about a year due to the fact that I have no choice in what operating system I use on my laptop. Oh, and before someone says try burning it to a CD heres something funny, My Toshiba Satellite C55T-B5109 came with a fake optical drive so.... I've changed boot order i've switched to CSM boot, I only have two boot options and when I switched it booted a black screen with white text talking about how I need to insert a usb or cd(sorry i cant) and try again which I did, so i just switched back to the original boot option. I've already disabled fast boot and I updated my BIOS to v1.4 (the latest version) but that of course didnt do anything because toshiba is probably getting paid to make it almost (if not) impossible to use anything but the virus that is windows 8.1. Nobody speak a word if you dont know how to directly solve the problem. I don't want to see "Thats happening to me too! plz help" or "that sucks" be constructive or dont bother. The only solution or "you should try" should directly correlate to secure boot. Not the load order. The boot options. This needs to be solved immediately because the fact that the choice of a different OS should be available to everyone its my computer. I bought it.

That would be great but when I try CSM Boot it just says insert a valid USB or something of that nature. To which I keep unplugging and re-plugging the USB but it still doesnt get detected as a bootable drive. So I practically HAVE to use UEFI boot and no matter what I do it kicks windows back into my face. I can try selecting the boot from USB option but that doesn't work. I but USB at the top of my load order and my HDD at the bottom, but that doesn't work. I also opened BIOS at startup and clicked the USB but all it does is kick me into windows once again. I disabled fast boot, I finally forced secure boot off, but I still can't install Ubuntu. I've re-written the USB multiple times and I would try to burn it to a CD but I don't have an optical drive. I opened msconfig and had a look at the boot tab but it only lists the C: drive with windows 8 as the default OS. I've looked up everything and I have tried it. It seriously should not be this hard to install the OS of your choice because Windows decides that you have to use their OS. I must be doing something wrong so please tell me i'm out of ideas.

[SOLVED]UEFI boot gives 'failed to install override security policy'

Hi, newb here who has hit a dead end quite early in the process of installing Arch.
When trying to boot Arch into EFI mode, it says
'failed to install override security policy'
Of course I did my research and it seems that only three other people on this planet have had the same problem, and their solutions do not work for me.
http://superuser.com/questions/615142/u … ity-policy
Overwriting EFI/boot/bootx64.efi with loader.efi enables me to see a menu where I can choose from booting Arch, UEFI shell v1 or UEFI shell v2. Still, selecting Arch results in a blank screen with two grey bars at the top and bottom of the screen, so not really not much help.
I'm not a UNIX nor an EFI wizard, so please bear with me. I'm a Windows user with some anecdotal Linux knowledge (I have installed Ubuntu countless times, wanted a bit of a challenge this time) who wanted to make the switch to the Linux ecosystem, but this error prevents me from doing so. I also tried to install rEFInd as suggested here: https://bbs.archlinux.org/viewtopic.php?id=174734
But I seem to be unable to boot into any UEFI shell v2, it's also printing the errors:
ASSERT_EFI_ERROR (Status = Not Found)
ASSERT C:\svn_code...and so on )
My Windows installation is on BIOS/MBR, so I cannot install rEFInd manually using Windows, and I also cannot use the v1 UEFI shell because of the lacking bcfg command. I don't know how to procede from here. My board is an AsRock P67 Extreme4 Rev 09 with a 2.10 EFI. This board doesn't even have Secure Boot if I'm correct, I also searched every possible submenu of the EFI for an option to disable Secure Boot, but haven't found anything.
Last edited by 0x33 (2015-03-11 17:35:56)

I presume you are trying to use gummiboot?
Please post the contents of /boot/loader/loader.conf and also your gummiboot configuration file for your Arch system (if you are not using gummiboot post the config. files for whichever boot loader/manager you are using).
Load the Arch live ISO, mount all your partitions and `arch-chroot` into your system and then post the output of:
lsblk -f
# parted -l
# efibootmgr -v
Last edited by Head_on_a_Stick (2015-03-10 21:05:43)

Disable UEFI boot in Lenovo B470

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