1
vote
1answer
29 views

Can a computer that uses EFI/UEFI rather than BIOS run a real mode OS?

Title says it all: could I get away with installing a real mode OS such as MS-DOS on a EFI-based computer? I understand that EFI-based computers still use "BIOS emulation" for compatibility reasons, ...
0
votes
0answers
20 views

Hardware issue with motherboard BIOS resets

I have a motherboard AsRock 970 Extreme 4. BIOS defaults again and again and it doesn't store settings which I set. I tried to change jumper to Clear CMOS position and after that change it back to ...
0
votes
1answer
45 views

Acer Aspire keeps rebooting when bootable USB inserted

So I have an Acer Aspire V5-131 and long story short (really, it's a long story!), I decided to do a complete wipe of the HDD (using dban). So right now the HDD is absolutely wiped, there's nothing on ...
-1
votes
0answers
45 views

Access UEFI BIOS settings

I have a NEC ultrabook with windows 8 installed, and with UEFI bios. I was told that in order to access the BIOS settings I have to press the F2 key as soon as i power it on, however it doesn't ...
0
votes
1answer
34 views

AMD Radeon video card/display only works with UEFI Fedora

When I was using my onboard graphics, Intel HD4600, I was able to set up a dual boot on my SSD with a legacy BIOS Windows 8.1 64-bit installation and legacy BIOS Fedora 20 64-bit installation. I put ...
0
votes
0answers
19 views

How can I tell if a Windows 8.1 machine has 'full' UEFI?

I've seen a Windows 8.1 machine that has a MBR format drive and a 'Legacy' BIOS, and it has fancy graphics that look like UEFI. If I have a GPT format drive is it still possible to have the old style ...
0
votes
0answers
26 views

In Windows 8.1 what are the differences between UEFI, and the UEFI style Legacy BIOS?

When using Legacy BIOS (and MBR format disc) the BIOS still looks like UEFI, has a mouse pointer, and appears to function in a similar way. I believe that you can only use Secure Boot with UEFI on a ...
1
vote
1answer
72 views

Is UEFI more or less vulnerable than Legacy BIOS?

Is UEFI more secure than BIOS on a Windows 8.1 machine? Is UEFI vulnerable to malware in ways that Legacy BIOS is not? Is it correct that UEFI can connect to the internet before the OS (or ...
2
votes
1answer
84 views

Is a hybrid Linux USB-Stick for UEFI & legacy BIOS possible?

my idea is to create an USB-Boot-Stick with Lubuntu that is able to boot on an older BIOS Laptop and an newer UEFI Systems. This would be quite easy, when the Stick would be setup as a legacy boot ...
0
votes
0answers
28 views

Ubuntu 10.04 Installation Replacing Windows 8 2TB Hard Drive

As a point of reference and documenting for the Greater Good, I thought I'd post something I've discovered. After searching forums for days, I haven't come across this specific tip that might be of ...
0
votes
1answer
201 views

Want to buy Asus H81M-PLUS motherboard and i3-4150 CPU; how to make sure it'll work?

I want to buy an ASUS H81M-PLUS mainboard and an Intel i3-4150. The CPU is an Haswell Refresh CPU, but the mainboard needs a newer BIOS version to support the CPU. I expect it won't be shipped with ...
-2
votes
1answer
63 views

hp probook white screen with error cancel image and boot to next boot order

I bought HP Probook 440 G1 with windows 8 Pro. I am a ubuntu user so I wanted to install ubuntu with Windows side by side. I tried to boot it from USB or DVD ROM but was unable to do so. Then from ...
5
votes
4answers
183 views

How do I get my system to find a “buried” MBR?

Following a botched Linux install, my Windows 7 install can't find my MBR normally. It's in there -- somewhere -- and I CAN access it if I use F12 during boot to access the mobo boot options: Note ...
1
vote
2answers
184 views

Shortcut to UEFI firmware settings on Windows 8

I often switch out of Windows 8 to Linux on another partition, but it's awkward : Windows + I Shift + click restart click Troubleshoot click Advanced options click UEFI firmware settings and only ...
0
votes
0answers
320 views

This should be simple: “winload.efi missing or corrupt” yet neither. Win8.1 not booting

I have a desktop PC that was running Windows 8.0 from a slow HDD. I unplugged the old drive and installed a new SSD and Windows 8.1. Once I got it running, I unplugged the SSD and plugged the HDD ...
0
votes
0answers
194 views

'UEFI boot source (windows 8)' and 'Legacy source (RHEL 6)', dual boot issue, after installation

On new system where windows 8.1 installed already, I have shrieked the partition and tried to install RHEL 6. But the DVD is not detectable (may be because it is not supporting UEFI boot source). ...
0
votes
2answers
3k views

UEFI Legacy boot hidden - tricks to unlock it?

I bought an Acer Aspire E1-510P-4459 with Windows 8.1... And I am considering installing Linux on it; maybe Win7, but I'd need to get a USB CD for that. So I downloaded a live image of my favourite ...
1
vote
0answers
80 views

Booting a GPT USB key on older BIOS laptop

I have an old HP EliteBook 8530p, which does not support booting from GPT USB (GPT HDDs are fine though). Lately I had the wish to have a fast-to-start OS for browsing, smaller web tasks, etc., so I ...
0
votes
2answers
538 views

How can I dual boot a UEFI OS and a legacy boot OS, or convert stock Windows 8 to BIOS?

I have a computer (HP Pavilion g6-2342dx) which came with Windows 8, and thus the new UEFI boot system. I would like to install a few OS's which are not EFI compatible, and Arch GNU/Linux with BIOS ...
0
votes
1answer
2k views

Windows 8.1 installation from USB after deleting Windows Boot Manager in BIOS/UEFI

I removed Windows Boot Manager option from BIOS (UEFI) with EasyUEFI, after reboot I got an error message about broken BCD, need to be recovered, I tried to reinstall Windows 8.1.1 Pro X64 from USB ...
3
votes
3answers
1k views

SATA Devices not showing up when in UEFI mode

I'm trying to install Windows and the bios should be set to UEFI mode. The problem is that all SATA devices aren't showing up (shows as if there aren't any) so I can't boot from the installation CD ...
14
votes
1answer
2k views

What hardware device used to eat up 1.4GB of my 4GB RAM, and now suddenly after no hardware changes eats up 2.2GB?

This is more or less a continuation of What hardware device eats up 1.4GB of my 4GB RAM? While I have more or less accepted the solution there that for some mysterious reason, after a BIOS upgrade ...
1
vote
0answers
181 views

Extract Samsung OEM recovery from laptop HDD

I have a Samsung NP540U3C with Windows 8. I recovered it to factory condition, booted and it was fine. There were 107 Windows updates so I downloaded and installed them, rebooted and then I was ...
1
vote
1answer
132 views

UEFI with MBR partition table?

i want to convert current GPT partition table to MBR. But my laptop has UEFI, so is it safe UEFI with MBR partition table? or maybe i am misunderstanding about UEFI/GPT things?
1
vote
1answer
728 views

How to enable Samsung EVO 840 mSATA SSD Self Encrypting Drive with Intel RST RAID 0

I have an MSI GT60-2OD (Haswell MB, UEFI enabled w/o CSM) with 3 Samsung EVO 840 mSATA SSD drives in RAID 0 mode (Intel RST AHCI RAID Controller Miniport aka Intel(R) Mobile Express Chipset SATA RAID ...
0
votes
0answers
35 views

Asrock z87 extreme6 overheat protection

I coulnd't find any informations about this function, it's function inside BIOS/UEFI I don't know what temperature is max, does it control cpu, north brigde or what? Manual doesn't tell anything... ...
2
votes
1answer
194 views

What configurations are different between BIOS and UEFI “AFTER” OS boot?

I tried installing Ubuntu in UEFI mode to VirtualBox. The installation was fine, but after rebooting, OS started correctly while the graphic environment didn't start. This problem itself was reported ...
0
votes
2answers
307 views

boot to windows from aptio BIOS

I have installed Ubuntu, but it has overridden my windows boot option, so now it boots to grub. (I can still select windows from there). I want my computer to boot to windows as I only incidentally ...
4
votes
1answer
246 views

Imaging UEFI computers

We are buying computers for a new building, but our current imaging software, Symantec Ghost Solution Suite 2.5, does not support imaging of UEFI computers. I’m hesitant to dummy down 300-500 ...
-2
votes
1answer
128 views

I have no boot options in the firmware's SETUP utility at all and so cannot boot anything.

The "Boot" page of the Aptio SETUP program in my PC's firmware looks like this: I don't have any boot options, so my machine doesn't boot! Here's what I think that it should look like (although ...
0
votes
3answers
843 views

Dell Inspiron 15z-5523 does not boot from hard drive

I'm looking for help with my Dell Inspiron 15z. I have removed all visible and hidden partitions from all the hard drives in the system (SSD and HDD). I have successfully installed openSUSE Linux 13.1 ...
1
vote
0answers
378 views

how to disable hard drives in UEFI bios?

sometimes I need to disconnect a hard drive. I have to open my computer and unplug the sata power cable. I am wondering if its possible to disable the hard drive in UEFI bios. I am using asus p8p67 ...
0
votes
0answers
233 views

Can't find Bootloader without “CSM”

I bought a new Asus N550JV, with Windows 8 (in UEFI-mode) preinstalled. The Laptop had 1 HDD installed. Right after buying, I changed the Blueray-Disk with a new SSD, and installed Windows 8.1 on the ...
-1
votes
1answer
83 views

Can you install UEFI? [duplicate]

From what I've read the UEFI replaces the BIOS. BIOSs can be flashed though, so is it possible to install UEFI on a computer using a BIOS? If it's possible, how to do it? I'm guessing this'd be ...
-3
votes
3answers
77 views

What is a UEFI?

While installing ubuntu 12.04 LTS on my windows 8 PC, many online tutorials were telling to disable the UEFI. My question is what is UEFI and what is it's use?
1
vote
0answers
444 views

How can I boot to DOS with a UEFI BIOS? (re: updating BIOS)

I have a Supermicro X9SCM-F motherboard and I'd like to upgrade the BIOS because I'm having trouble installing Windows 8.1 (and apparently I'm on a very old BIOS). However, I can't seem to boot to ...
0
votes
0answers
74 views

VAIO Bios can't see 2-nd HDD connected to DVD slot

I have a problem. Bios can't see 2nd HDD connected via mSata to Sata connector. If I boot from other device or liveCD, the system can see it correctly. Harware: Sony VAIO SVS13A1Z9R BIOS Inside H20 ...
0
votes
0answers
148 views

Can't disable UEFI/Safe Boot

I'm trying to install Steam OS on my computer but I can't boot from my flash drive because it's in UEFI boot mode or safe boot. There's no option to disable it anywhere. I've tried doing it through ...
1
vote
0answers
76 views

How do I find the storage capacity of the E²PROM chip on my motherboard? How much space is needed for UEFI to be implemented?

I'm looking at a solution for upgrading BIOS to UEFI on a motherboard that doesn't natively support UEFI. Another user, Rod Smith, replied to a question as to how this would be done stating: "It's ...
-2
votes
1answer
718 views

Confusing BIOS and UEFI

I've just bought an Acer Aspire E1 (572) laptop four days ago, and ran into that UEFI/BIOS problem. It was shipped with Linpus Lite OS by default. I had it installed a Win 8 pro on it, after ...
0
votes
3answers
1k views

What options do I have for flashing an UEFI BIOS chip on an Asus mobo?

I have a bizarrely borked ASUS board (M5A97 LE R2.0) that is stuck in a half way state between two BIOS versions. I cannot enter the BIOS settings page (the system locks up after drawing half of it). ...
4
votes
2answers
674 views

Is TianoCore+coreboot a true open source UEFI?

There has been a lot of controversy surrounding UEFI, but like it or not, it's becoming the only option when it comes to generally available desktop motherboards. I've been avoiding UEFI mobos for ...
9
votes
4answers
12k views

How can I use TrueCrypt under windows 8.1?

I know that TrueCrypt doesn't support windows 8 because some systems have UEFI enabled. It seems that if UEFI is disabled or Windows 8 is installed on an non UEFI system TrueCrypt just works fine in ...
1
vote
1answer
7k views

Enabling UEFI mode in BIOS after having set it to CSM mode, and not being able to get back into BIOS

I set my BIOS to CSM only mode after being unable to boot into windows after upgrading it to 8.1 and not being able to boot from a USB stick to repair it. I ended up putting in a formatted SSD, and ...
0
votes
1answer
403 views

Linux Live CD only works when Windows is in Legacy mode?

I have asked a similar question before and no one was able to help me but I think it was because I wasn't phrasing it properly. This is a better restatement of the question. I have Windows 8 and Linux ...
0
votes
2answers
921 views

no OEM certificate found in windows 8

i want to clean install win 8 on my new lenovo, i have heard that OEM key is stored in the bios and is automatically applied on a clean install. so i decided to save the OEM CERTIFICATE using a ...
0
votes
0answers
71 views

ASUS laptop refuses to boot to USB?

All of a sudden today, I can no longer boot from USB. I've tried installing a Crunchbang Linux ISO to a USB drive using a method (LiLi USB) that's worked for me dozens of times in the past. Now, for ...
2
votes
0answers
1k views

Dual boot Windows 7 on pre-installed Windows 8 laptop

I have a newer HP laptop with preinstalled Windows 8. I want to dual boot Windows 7 with it, but am unable to boot to the USB. To start with, I downloaded an .iso from Microsoft that I then copied ...
0
votes
1answer
3k views

Can I disable UEFI in Windows 8 to boot it in legacy mode?

1 - I would like to boot my pre-installed Windows 8 in legacy mode, and not any more in UEFI mode. Is it possible ? If yes, do you know a tool/cmd to change it ? 2 - Would Microsoft be ready to give ...
0
votes
1answer
80 views

What defines the signature of a bootsector?

I've attempted to simplify the question, by getting at the gist of the problem: What exactly makes the "first sector" of a device the "bootsector?" Is the bootsector a logical sector, a physical ...