0
votes
0answers
11 views

Zorin no Kernel. Hard Drive is completely wiped after installing

I installed Zorin successfully, but I wiped eveyrthing that was previously on my hard drive. So when I boot up I'm in grub. I typed "grub> boot". But its saying I need to load a kernel. I have no idea ...
4
votes
1answer
116 views

How does windows 8 prevent BIOS access

I am trying to get a better understanding of how BIOS and operating systems work. From what I understand, BIOS is a basic piece of software that is the first thing to be run when a computer turns on ...
0
votes
0answers
118 views

How is the NVRAM/EPROM which contains the firmware placed and used

From this link - Chapter 9, section 9.1.4, it says: The first instruction that is fetched and executed following a hardware reset is located at physical address FFFFFFF0H. This address is 16 ...
3
votes
1answer
2k views

Who loads the BIOS in RAM during computer bootstrap

When the computer starts up, the code in BIOS is executed first. However, how is the code in BIOS loaded into the RAM for execution ? I have referred to this question - Is BIOS read from the BIOS ...
0
votes
2answers
174 views

Steps of changing from 32-bit OS to 64-bit and changing RAM?

My laptop is Lenovo T400, whose CPU is 64-bit and RAM is 1x2GB. When I bought it, it already had 32-bit Windows 7. Then I partition the hard drive and install 32-bit Ubuntu 12.04 alongside Windows 7. ...
0
votes
2answers
76 views

Temporary operating system from floppy disk

I run Windows on my computer (which has a floppy disk drive and usb ports), and I want to try out a linux operating system. If I modify the BIOS to load from the floppy or usb first which contains ...
3
votes
1answer
282 views

What does an ACPI BIOS configure during boot?

When a PC boots with an ACPI BIOS, what does it exactly do? I understand that the point of ACPI is to allow the OS to control hardware resources and power management but before the OS is loaded ...
0
votes
2answers
2k views

My Toshiba laptop restarts again and again

Please help on how to fix my Toshiba laptop, after reformatting all data has installed properly driver's are perfectly installed and no error, after installing I restarted my laptop as the ...
1
vote
1answer
97 views

System restarts automatically

I have installed both Ubuntu 11.10 and Windows 7. My system was working fine when suddenly I got the blue screen of death (bsod) while logging into windows 7. It said about the ACPI compliant and when ...
2
votes
2answers
222 views

What is the need for BIOS ROM to be present on the address space on PC?

When an x86 PC boots, it starts executing a program called the BIOS, which is stored in non-volatile memory on the motherboard. The BIOS’s job is to prepare the hardware and then transfer control to ...
1
vote
2answers
4k views

Sony Vaio BIOS Setup not Working?

I have a Sony Vaio E-series (VPCEA22EA) laptop. Yesterday, while I was starting up my laptop as usual, it showed the password error saying: Password you entered is incorrect I forcefully shut it ...
0
votes
2answers
628 views

Laptop will not boot

This is a dell studio 1558 laptop. Now, something is wrong with the charger that it won't charge the laptop, but the laptop can turn on and operate properly as long as it is attached. It has been like ...
1
vote
1answer
119 views

Keep the password permanently on BIOS

Is there any mechanism or tweak to keep the passwords permanently for BIOS? If I remove the CMOS battery for a while, the password gets reset. How can I prevent this?
59
votes
5answers
5k views

What are the functions of the BIOS while the operating system is running?

I always wondered whether the BIOS (apart from conducting POST, starting the bootloader and passing control to the OS after one presses the power button) has any purpose or function while the ...
8
votes
4answers
739 views

Is BIOS considered an OS? [closed]

This question comes to mind when dealing with RAID arrays, but is not necessarily applicable to the subject. How is that the BIOS is able read from a hard drive to effectively load the OS, when ...
37
votes
4answers
2k views

How computers display raw, low-level text and graphics

My ever-growing interest in computers is making me ask deeper questions, that we don't seem to have to ask anymore. Our computers, at boot, as far as I understand it, are in text mode, in which a ...
1
vote
1answer
453 views

Which software and hardware allows BIOS control from Operating System?

Which software and hardware allows BIOS control from Operating System?
2
votes
3answers
5k views

Computer does not boot after ram upgrade

I have a Dell Optiplex GX520 desktop (it's abount 5 yr old) PC with 512 MB DDR2 RAM. Since my computer always swapping I thought I should upgrade my RAM. I bought a Kingmax 2GB DDR2 RAM. But my system ...
1
vote
3answers
163 views

PC or mac for multi OS? [closed]

I have to use MacOS in my school but i am a bloody windows user and I need Linux too, I have almost NO background in Mac. So i was wondering Should I get PC or Mac Laptop ? UPDATE: As I have to use ...
0
votes
3answers
157 views

How can I access my BIOS?

I am interested in developing a small operating system between 2-3 MB and put it in my BIOS.I want to develop a text based operating system that is very fast. Please tell me how to push my program ...
8
votes
4answers
1k views

What happens when a computer starts?

I'm trying to understand what happens when a computer is turned on. How the computer works on startup, various initializations that take place, etc. For example, is the bootstrap loader the first ...