BIOS mode-UEFI or Legacy in Lenovo G580?

I have lenovo g580. in bios setup under boot tab, it says UEFI boot 'Enabled'. but when i go to cmd and type 'msinfo32', it says my system has LEGACY bios mode. what actually is it? if i have UEFI mode enabled, why it shows legacy in msinfo32? please help........

hi firozmkhatri,
According to this FAQ, the UEFI BIOS has to emulate legacy BIOS so that existing applications aren't broken (this means 32bit programs since UEFI only works with 64bit versions of Windows). If you have UEFI enabled under BIOS and see it's saying Legacy under msinfo32, you probably have a Windows 7 system installed on legacy mode as the Lenovo G580 supports UEFI with an emulated Legacy.support.
To check if you have Windows installed on UEFI (GPT) or Legacy mode (MBR), check your drive volume:
1. Click Start, right-click Computer and then click Manage
2. On the Computer Management window, choose Disk Managemment
3. Right click on any of the Disk (i.e. Disk 1), choose Properties and on the Volumes tab, see Partition Style
Windows with MBR Partition:
Spoiler (Highlight to read)
Windows with GPT Partition
Spoiler (Highlight to read)
Reference:
http://forums.lenovo.com/t5/tkb/articleprintpage/tkb-id/Special_Interest_General@tkb/article-id/22
http://msdn.microsoft.com/en-us/windows/hardware/gg463149.aspx
Hope this helps.
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Change the already installed Win 8.1 BIOS mode from Legacy to UEFI

Hey,
It seems that my Windows 8.1 is installed in BIOS mode: Legacy as "msinfo32.exe" shows. I can boot into it with no issue, but when I go to my laptop's BIOS settings and change the mode back to UEFI, it gives me an error "Operating system not
found" (not sure about the exact error message).
I am just wondering if it is possible to change the Windows 8.1 BIOS mode to UEFI so when I change the laptop's BIOS settings back to UEFI, it can boot into it?
Regards.

Hi Amin CiscoSoft,
Since UEFI mode need an EFI system partition (ESP) which has the partition type ef00, usually contains a FAT32 file system. We need to recreate the partitions needed for booting the installation media in UEFI mode.
Before you doing that we VERY recommended for you to read all contents including Prerequisites and warring paragraph in links below, then perform a backup of your data. If you have a second disk drive big enough, you can simply create a system image and
able to recover the full installation as it was before you started this procedure if anything goes wrong.
Since the steps are complicated, please follow the steps in
http://social.technet.microsoft.com/wiki/contents/articles/14286.converting-windows-bios-installation-to-uefi.aspx
Regards

Problems! Lenovo G580 (21050) and bios v.9.01

Deat support!
Was Bios v. 2.03 and Windows 8 x64 - cool worked!
After update to bios v. 9.01, i installed windows 8.1 x64 - and
In bios disappeared support UEFI for HDD and DVD - **bleep**?
My motherboard is defined as LENOVO INVALID (tested in AIDA64) - **bleep**?
Moreover, the laptop began to brake hard in games and programs.
Pls give me instructions for recovery and bios firmware v.2.03.
Laptop: Lenovo G580 (21050)

WHY? WHY? Where their old firmware?
I get answer from support in E-mail:
Dear customer,
Sorry we do not have the BIOS now available on website.
Sorry for the inconvenience to you.
Please contact your local service provider for help. Sorry for the inconveniences to you.
To find the contact information, please click the link below:
http://support.lenovo.com/en_US/detail.page?LegacyDocID=MIGR-76613
--------------- Original Message ---------------
From: Владислав Швецов xxxxxxxxxxxxx]
Sent: 10/29/2013 6:11 PM
To: xxxxxxxxxxxxxxx
Subject: Re: Lenovo eSupport Team: Case # 00543865 - Thank you for your reply [ ref:_00D30V2Wu._500a0adsuS:ref ]
omg! Please give me last bios firmware bios v.2.03. I do not want to
do the work to lift dump their bios.
2013/10/29, Lenovo eSupport Team<xxxxxxxxx> :
> Dear Valued Customer,
> Thank you for your feedback.
>
> We have yet to receive any BIOS file for your machine from the relevant
> team.
> Unfortunately, we also do not have any visibility when the drivers and
> publications would be available.
> We post the information received as soon as possible upon receiving them.
> Please do return to our website regularly to check for updates.
>
> Apologize for any inconveniences caused.
>
> Thank you for contacting the Lenovo Web Content Team.
> http://support.lenovo.com
>
> Case Number - 00543865
>
> Additional ways to get assistance:
> 1. Find solutions using our Lenovo Assisted Search:
> http://support.lenovo.com/en_US/research/hints-or-tips/detail.page?DocID=HT077986
> 2. Get help or participate in Lenovo Forum. http://forums.lenovo.com
> 3. Self Help.
> http://support.lenovo.com/en_US/detail.page?LegacyDocID=SELF-HELP
>
> Your original question:
> Hi! Give me bios firmware for Lenovo G580 (21050) v. 2.03. Bios v.9.1 -
> crash my system on Win 8.1 and not working UEFI.
Moderator note; e-mail addresses removed to stop the spambots getting them

Clean install from a Lenovo installa. dvd: UEFI vs Legacy + Thinkpad setup acc. to Lenovo user Guide

Machine: T520 bought Feb. 2012
O.S. W~7 Pro 64-bit
I want to wipe the harddrive, buy a Lenovo W~7 PRO installation DVD, and do a completely clean installation.
Lenovo User Guide (.pdf) Ch. 8, Adv'd Config, Installing Windows 7, p. 295 (212 of 298) says:
Start Thinkpad setup, then choose UEFI versus Legacy, then insert the installation DVD.
This obviously does not apply when the harddrive has already been wiped (necessary to 100% eliminate all traces of irreversible damage caused by a virus, including the re-installation partition (Q-drive).
When an intallation DVD is purchased from Lenovo, is not the first step to insert the DVD ?!! Then presumably there is an installation wizard resulting in a restored O.S. ?!!
If not, please tell me what surprises are in store, and where I can find a reliable written resource to consult !!!
Thank-you.
Solved!
Go to Solution.

You're over-thinking this and making it harder than it needs to be. The manual isn't helping...
The BIOS is stored in non-volatile memory on the motherboard. One would probably call it firmware, not software. It is there regardless of what's on the HDD - or whether there's even an HDD installed.
Turn your machine off. Turn it on again. When you see the logo screen, hit F1 - multiple times if necessary. That gets you into the motherboard's BIOS configuration utility - what the manual is calling "Setup".
Here's a snip below from the T520 BIOS configuration utility (actually from the on-line BIOS simulator). In the StartUp tab you can see where UEFI/Legacy can be selected. You can configure UEFI boot there. Or "both". Or - probably - just select Setup Defaults, save, and exit.
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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S205 & Win8 - How to force legacy BIOS mode?

Hi,
as far as I know the S205 has got two different interfaces:
UEFI and legacy BIOS.
Windows 8 supports both.
Using UEFI, Windows will partition the drive with GPT.
Using BIOS, it will be done with MBR.
The main problem is that - probably due to malfunctioning drivers - there are some major problems when using GPT with this netbook. You can find numerous threads about not working WiFi cards for instance.
What I'm looking for is an option to boot the Windows 8 installation through the BIOS interface from a thumb drive.
The S205 hasn't got an optical drive and I haven't got one either.
Thanks in advance for any help.
PS: As this is not a driver issue, I'm not posting this in the Windows 8 forum.
Solved!
Go to Solution.

After doing some research, this is how to successfully use the Ralink Wifi with Windows 8 on the s205 - clean USB install.
You must install Windows 8 in legacy mode (choose "IDE" in the BIOS).
BUT - you must *also* remove "bootmgr.efi" and \efi\ from the USB, before you install. If you don't, the USB will still install in EFI!
If you already installed Windows 8 in IDE mode from USB, you must check if your install is IDE/legacy or EFI - open this log file:
\Windows\Panther\setupact.log
Look for this text:
Callback_BootEnvironmentDetect: Detected boot environment: BIOS
=you have IDE/legacy install
...or
Callback_BootEnvironmentDetect: Detected boot environment: UEFI
= you have EFI install
(This information is from http://forums.bit-tech.net/showthread.php?t=209045)
If you see EFI/UEFI in the log file, you must reinstall Windows 8.
The only problem I have now is that Windows is freezing sometimes, so I plan to reinstall from a different USB in case of file corruption etc.
Hope this helps.

Lenovo g580 black screen bios

hi i have black screen when i update bios, my laptop doesn't work. I tried flash witch pendrive and laptop dont write him. this video https://www.youtube.com/watch?v=gJvdTRL1QlU&list=UUeDi-2m4qf4GK5Gr4JrJXeQ
I undressed the laptop, I replaced Ram , I saw when i power him fan run 5 sec stoped at 3 sec and run all the time
I write to friend from bios-mods and there are sent me recovery bios etc. and told me he will be needed psi programmer .Just program the bios or replace or waiting for my replacement motherboard. Sorry from my english and help me pls
spec: lenovo g580 20150

hi lesiu1397,
Welcome to Lenovo Communiity Forums!
Im sorry to hear what happened,
I would strongly recommend contacting Lenovo Technical Team for Hardware assistance.
You're correct about BIOS needs to be re flashed. I would say that the Lenovo Depot could do such repair for it.
http://mobilesupport.lenovo.com/us/en/contactusmidh/supportphonelist
Regards
Solid Cruver
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Switch from uefi to legacy bios

How would you go about switching from uefi to legacy bios/boot? Would you have to reinstall windows? Can you use the hidden partitions for this? Would you need a windows install disk?

how do I switch my partitioning scheme to MBR so I can use legacy boot/bios?
In the System Configuration section of the UEFI, for starters, set the Boot Mode to CSM Boot. That essentially bypasses the UEFI.
The easiest way to change the partitioning from GPT to MBR is to use old fashion tools like a Windows 7 installation DVD to delete the existing partitions and create new ones.
-Jerry

S440 switch Legacy BIOS to UEFI

Hi,
I have a question, since I got my motherboard replaced (on warranty), the BIOS is in the Legacy mode. What steps do I have to go through in order to switch the machine to UEFI mode? My SSD is GPT formated.
Thanks for advice!
David

You welcome

Request MSI GX640 UEFI boot bios mod

Hello I was wondering if someone could help me re-enable the UEFI Boot option in the latest MSI GX640 bios version E1656IMS.10F
Also is it possible to add SSD support in AHCI mode as well, because currently I can not get an ssd to boot in that mode. It only works in IDE mode for some reason.
I would also like it to be fully unlocked.
Thank you!

Alright cool. The reason I asked about the UEFI Boot feature is because it was enabled in the original BIOS, but they disabled the feature in a BIOS update because when the feature was enabled it would cause the system to hang when booting from a CD/DVD.
I bought this Dell AMD HD 7970m GPU for my GX640 and I found out that it is a UEFI card that doesn't have a legacy vBIOS, and after I installed it, my laptop would not post and I got a black screen. I was thinking that if I had that UEFI Boot feature back, then my computer would boot with the GPU installed in it. Please correct me if I am wrong, and please let me know if some sort of BIOS mod would make this GPU work in my GX640.

660Ti UEFI/GOP & legacy bios request.

Hi.
Preparing myself for the Haswell upgrade.
Can I please have the latest UEFI/GOP & legacy BIOS(es) for the following card?
Card: MSI N660Ti PE 2GD5/OC 2GB.
Serial#: 602-V284-050B1211045023.
Original Vbios: 80.04.4B.00.16 (P2004-0001).
Vbios image dump: (*https://www.dropbox.com/s/y6crdr9y1ti5t6u/MSI%20N660Ti%20PE%202GD5-OC%202GB%20GK104%20original%20bios.rar *)
Thanks.
PS.
Which ver. of nvflash should I use for flashing?

Thanks for the file.
I upgraded just for the sake of being up-to-date,
but I solved the problem earlier otherwise
So, I can't really comment if the newer/provided VBIOS solves the black screen problem or not.
In my case the problem was from Nvidia driver 320.18.
There is a supposedly acknowledged problem with Win 8 which silently installs on the background
an earlier Nvidia driver (311.06) from windows update,
and *not* informing the user about the background install/need for reboot.
If the user installs another/later driver without rebooting 1st it becomes a driver binary mess.
In my case, when using 320.18 with Win 8 (even from a clean install and not messing with any previous driver),
caused the monitor going to sleep after POST and when MB UEFI handed-off control to OS in 80% of the cases.
A situation I could exit from only with a hard shutdown.
So, for any other poor soul having similar problems,
it might be a good idea to try an earlier Nvidia driver.

REQ - MSI U270 BIOS mod with unlocked UEFI option

Hi guys, I'm new to this board.
I've searched everywhere and couldn't find any MSI U270 BIOS mods. I'm trying to upgrade to the Windows 8 BIOS, but since the update package can only be used under UEFI mode, I'd have to enable UEFI in my BIOS. BUT, there isn't an option to do that, and there isn't a DOS version of the BIOS update either.
Thanks in advance.

unlocked bios won't help you with this

Lenovo G580(20157) usb boot not working after windows 8 installation

Hi,
I have lenovo G580 (20157) model. previously i had installed Windows 7 and Ubuntu 12.04 with no problem. Today i decided to go for windows 8.1. it installed perfectally without any issue ( Legacy mode non UEFI ) and working fine but ubuntu live USB is not booting up, when i select Boot from USB windows 8 starts. I really need Linux in my laptop. Could anybody help ASAP.
Solved!
Go to Solution.

This guide is not System Specific and not all of the option may show inside a certain BIOS version, Just Make sure that all optionlisted here that is available on a Lenovo BIOS is set as follows.
Ideacentre BIOS Menu is F1 and F2 for Ideapad.
Under Exit TAB
OS Optimization
OS Optimized
For the two options above:  Should be set as Disabled or Other OS
Under Boot Tab / Start up Tab
Boot Mode Should be set to Legacy
Boot Priority Should be set to Legacy First
UEFI Boot should be set to Disabled
Quick Boot should be Disabled
StartUp device Menu prompt should be Disabled
Quick Boot Should be Disabled
USB Boot should be Enabled
Secure boot Should be Disabled
Once everything are Set, make sure to save all changed by hitting F10 and Enter for Yes
    After Hitting enter It will Restart and You will have to keep on tapping F12
       this should pull up the Boot Menu letting you select where to boot.
If not succesful pulling up the boot menu after the restart, Power Drain the System and turn it on while hitting F12 Again.
Regards
Solid Cruver
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If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.
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Lenovo g580 2189 driver install problem

I have a lenovo g580 with windows 8
when i try to install drivers i get some errors,any driver with other error:
smart audio hd with dolby- failure with non reason'
tuchpad ealn....-"ask for dspint package"
i download all the drivers from lenovo official web and i have energy mangement for windows 8
one more problem is in "fn" function,i dont see any fn function in the screen (no wifi,bluetooth,tuchpad,camera....)
only music. when i touch fn+f5 to turn off/on wifi the system shows on "airplane mode".
thanks

finally did it!!!! i had the same problem and now it works!
you first install the driver, and will tell no driver found ..., then go in C:\drivers\Bluetooth Driver (CyberTan, Liteon)\Broadcom\Win64 and execute Inst.exe and let it install all what it needs, don't press anything. if it still not works try install the same exe after activating bt with fn+f5.
win64 is for the one who have 64bit and I think that win32 will work for the one who have 32bit.
le: I have win7, i think it works the same for win8.. try it..
le2: and something else, I disabled UEFI from bios. I don't know if this is important, but it works for me with UEFI disabled.

Lenovo G580(20157) won't shut down [Windows 7]

Problem:
I have a Lenovo G580(20157) with Windows 7(64-bit),
My BIOS version is 62CN40WW (Phoenix MoBo), and I have a problem with my laptop even though it works and boots up fine it won't shutdown!!
Troubleshooting:
I have tried the following:
1.Do Hardware test - No errors.
2.Reflash BIOS. - Still won't shutdown
3.Do a clean boot. (I believe it is a BIOS issue but I still did it anyways...)
4.Used the boot utility provide at your website but it still doesn't shutdown even in Linux, it is stuck at shutdown message (Arch Linux/Open Suse)
5.Disabled UEFI
And all other quick hacks like pressing shift and shutdown, disable BIOS options like redoing steps 1-5 etc, etc................
P.S:I have a dual-boot system (Windows + nix) with Legacy boot enabled if it matters. Thanks!

hi ArchKudo,
Welcome to the Lenovo Forums.
Can you consider doing the following:
1. Turn off the machine and remove the HDD
- Video Disassembly Guide (see FRU Videos)
2. Boot from a live Windows or Linux disc/usb (see this guide for Ubuntu and select Try Ubuntu)
3. After booting from a live disc/usb, see if you can shutdown the machine.
If the computer turns off properly, try to put the HDD back in place and consider running another scan on the HDD using HD Tune.
- http://www.hdtune.com/faq_1.html
If you get a warning or any errors on the Health Tab / Error Scan Tab then it's likely that you have a failing HDD and
you may need to contact lenovo for warranty service or replace the entire HDD.
- Link to picture
- Link to picture (a good HDD)
- Link to picture (a bad HDD that's showing signs of failure)
Support phone list
Regards
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If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.
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Error related to EFI system..unable to install windows 7 64-bit on lenovo g580..

Hi,
I have Lenovo g580 which had DOS preinstalled in it {i5, 500GB, 4GB} and initially I had installed Win 7 32-bit on it. At that time, it gave some problem while rebooting 1st time, but i ran repair windows option and everything ran smoothly.
But the problem came when I tried to install windows 7 64-bit on the laptop using a DVD, no matter which drive I select, it does not allow me to go ahead. When I checked the details, I got the error message which is attached here.
Link to image
There is no disk controller option in BIOS, nor is there anything related tto UEFI systems.
i did r&d on uefi systems, but i want to be sure of everything before i go ahead with anything.
Any help would be appreciated.
Moderator comment: Image(s) >50KB converted to link(s). Community Rules.
Solved!
Go to Solution.

Thanks for no help guyz!
but i found a way..so for anybody else out there..here is the solution..
When installing at the partition screen hit Shift+F10.
At the prompt type diskpart and press Enter.
Type list disk (Not the number of the disk you want to use)
Type select disk X where is X is the number of the disk you want to use.
Type clean. This will erase all the data on your system.
Type convert gpt
Now reboot the system with the DVD/USB, and you will see only Unallocated Space. Use that to install the new windows.
Be warned though, this will clear out the partition table on the drive; make sure you have a backup before attempting this if you have important data

BIOS mode-UEFI or Legacy in Lenovo G580?

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