The process of starting up a computer and loading the operating system.

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18
votes
2answers
15k views

“Unable to find root device” on a fresh ArchLinux install

I have installed the latest version of ArchLinux (2014.06.01) on a MacBook Pro 8,1 (15", if that matters regarding hardware) dual-booting with OSX following the instructions in the official install ...
18
votes
9answers
65k views

Hiren's Boot CD with UEFI support?

I am a long term user of Hiren's Boot CD, but the CD does not support booting on UEFI/EFI/SecureBoot hardware, is there some kind of update/patch to apply to the cd image to be able to boot without ...
17
votes
4answers
73k views

How can I run a command after boot?

I would like to run the simple shell command echo 1 > /proc/sys/kernel/sysrq at each boot, to enable the sysrq keys. When in boot should this be done, and where should I put a script to do it?
17
votes
2answers
193k views

How to fix Windows 10 boot loader from Windows

I installed Ubuntu on system that has Windows 10 installed. I can boot to Windows or Ubuntu normally using GRUB. I want to delete Ubuntu partition but first I must restore Windows 10 MBR. Here https:/...
17
votes
3answers
21k views

How do I log startup and shut-down times in Windows 7?

I'd like to log the times when my computer starts up and shuts down. I don't need any diagnostic info or anything, just a simple note of the date and time, e.g. something like: 2011/04/29 08:17:34 AM ...
17
votes
5answers
22k views

Why does pulling the power cord then pressing the power button fix a non-booting PC?

I've been working at this institution for about 6 years. One thing thing that I've always found curious is that sometimes—especially after a power outage—we find a PC that won't boot when the power ...
17
votes
1answer
29k views

Windows 8.1 Black screen and no safe mode [closed]

PROBLEM Cannot run Windows 8.1 due to black screen. No mouse pointer. Sometimes white cursor in top left. Cannot enter safe mode: get black screen but with a row of blue pixels at the bottom or a row ...
16
votes
6answers
1k views

How do you silence the startup chime on a Mac?

What tools or techniques are available for silencing the start up chime on a Mac? I know this can be accomplished by muting the sound before shutdown, but I was hoping that a solution existed that ...
16
votes
5answers
136k views

Clean install of Windows 7 Pro 64-bit on a UEFI laptop with GPT partition?

I’m currently pulling out hairs about a problem with my wife’s new Samsung Book 9 laptop. it comes preinstalled with Windows 8. She wants Windows 7 Pro. I’ve board a Windows 7 Pro 64-bit for her and ...
16
votes
8answers
23k views

Why does GIMP start up so slow on my machine?

Is there any way to speed up GIMP's startup time on Windows Vista Home Premium 32-Bit 1.6 [Dual] Intel Processors? On XP [different computer], it loads in less than 3 seconds. On Vista, it takes 20 ...
16
votes
4answers
4k views

Which virtual machine can boot from USB drive?

There are any desktop (not hipervisor) virtual machine software able to boot from USB drive? Which one and how?
16
votes
3answers
10k views

How do boot sectors and multiple drives works?

I don't fully understand the concept of a boot sector, I was hoping someone could clear this up for me. If you have two hard drives, with an OS installed on each, does each drive have its own boot ...
16
votes
1answer
3k 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 ...
15
votes
1answer
9k views

How do I check the current boot parameter list in Linux?

During test, I sometimes add/change boot parameters to /boot/grub/menu.lst (suse), or at the grub screen during boot. How do I check what boot parameters have been used after the system is done ...
15
votes
5answers
15k views

How do I manage what programs startup in Windows 8?

There's a nifty new tab in the 'Task Manager' called 'Startup' where I can manage the program that run at startup. BUT... It doesn't show all of the application that run at startup: Some of the ...
15
votes
1answer
15k views

What is rootfs# and what can you do with it?

I have been dropped to a [rootfs /]# prompt many times when booting my distro failed. Usually I found I couldn't fix the problem with the limited commands available, so I would use any spare Live CD I ...
14
votes
2answers
37k views

What is the effect of booting with additional cores?

I was reading about ways to enhance speed in Windows 7, and I read that you can enable Windows to boot off of four cores vs one to boot faster. Is there a reason why you do not want to use all four ...
14
votes
8answers
36k views

Is it possible to copy all Windows 7 files from one HD to another and boot from the new HD?

Well, the hard-drive on my laptop died (it was displaying "SMART failure prediction -- Hard-disk Drive dailure might be imminant). So I took it out and hooked it up to an external enclosure and ...
14
votes
3answers
19k views

Can't boot flash drive on GIGABYTE motherboard

Situation When I try to boot from my flash drive, my GIGABYTE 970A-UD3 motherboard returns this: Loading Operating System ... Boot error All other motherboards I've tried support booting from that ...
14
votes
4answers
766 views

Is there a bootchart-style analyzer for what happens AFTER you log in?

Bootchart is an excellent tool for seeing what goes on when your computer boots. However, it only charts up to the login screen. Is there any way to analyze what is happening when I actually log in? I ...
13
votes
4answers
108k views

How to remove an old OS from the boot menu

When I upgraded from Windows XP to Windows 7, I had a second drive around and set it to dual boot. After a while, I decided that I wasn't ever going to go back to Windows XP, and so I deleted the ...
13
votes
5answers
66k views

How to boot a Linux live USB on a Mac?

I have a USB stick with a Fedora 11 live environment on it. It's booting fine on 3 PCs where I've tried it. But I can't get it to boot on a Mac (Intel). When pressing the alt key (or command key, I ...
13
votes
4answers
3k views

Is it normal for a Dell Inspiron 530 to have is fan to spin up 3 times before it POSTS?

I picked up an used Dell 530 desktop. It seems to work, but it has an odd pattern of powering up the case fan (which might be faulty - it sounds like a jet engine) 3 times, while blinking the power ...
13
votes
4answers
8k views

what is the difference between the usb booting mechanism and optical disk booting mechanism?

Many distributions of linux/bsd have separate usb and dvd images and writing the dvd image doesn't seem to work. What is fundamentally different between these two mechanisms?
13
votes
4answers
9k views

How do you start a program after X has started?

There's a little app called F.Lux that sets your screen temperature based on the time of day. The Linux version is a little spartan with just a console interface but it works perfectly well. Where ...
13
votes
4answers
17k views

How to run a program as an administrator at startup on Windows 10?

We have a program that is having problem starting up on Windows 10. If the program is NOT run as administrator, it popups a "Access Denied" message right before it starts. If we run the program as an ...
13
votes
1answer
1k views

Why are start-up times faster on Windows 7 than on XP? [closed]

Reading a hotter question Why are start-up times faster on Windows 8? There is a great answer there by ClickUpvote, which shows some design differences that makes 8 faster: Difference between win7 ...
13
votes
1answer
445 views

What causes the computer clock to change radically and how can I fix it?

My girlfriend just sent me the following photo: Apparently that was what greeted her, along with a load of license expiry warnings, when she booted her laptop this morning. She then rebooted to be ...
13
votes
4answers
2k views

Some questions regarding PXE servers and multi-booting

I currently work in a technology help desk for my college, where we fix the personal computers of all the students. We have hundreds of DVD's and CD's that we use to boot into all kinds of different ...
12
votes
4answers
62k views

How do I boot Windows 8 into Safe Mode?

I have Windows 8 Enterprise x64. It's installed a virtual machine. After trying to update VMWare's guest extension it black screened. After resetting it, now the virtual machine won't boot. It just ...
12
votes
5answers
67k views

How can I create bootable DOS usb stick?

I need to use this utility to change one of the parameters of my new WD hard drive: http://support.wdc.com/product/download.asp?groupid=609&sid=113&lang=en It has truly unreadable ...
12
votes
4answers
4k views

Windows XP startup profiling?

My Windows XP computer is suffering from slow boot times, and although I use the free Quick Startup utility to enable only the programs I want, I still need to know which programs take the longest ...
11
votes
6answers
36k views

RHEL6 - disable the tiered-progress bar during boot

How do you get RHEL6 to display the "traditional" display of startup information instead of the tiered/stacked progress bar? The standard info dump is displayed during shutdown.
11
votes
2answers
72k views

How to create an EFI System Partition?

TL; DR How do I create an EFI system partition from scratch? How do I put the EFI firmware on it onces it is created? Long version I hava Toshiba T430 laptop. I received it with Windows 7 installed (...
11
votes
11answers
4k views

Switch on the computer automatically

Is there any way to switch on the computer automatically at a specific time. Is there any BIOS clock trigger mechanisms available to switch on automatically. EDIT: I have a Dell Inspiron laptop. Does ...
11
votes
2answers
6k views

Best Linux for a single application & fast boot? (also How-to?) [closed]

I'm looking for a way to run Celtx,a screenwriting software on a Linux Distro and nothing else, no bluetooth, internet/WiFi, media, games, nothing, not even a desktop. Just boot up the OS and Bam! ...
11
votes
2answers
46k views

Can I make USB drive bootable and install multiple OSes from it?

Is it possible to have USB drive bootable and place multiple ISOs like Windows 7.iso WindowXP.iso Ubuntu.iso RHEL.iso so that I can choose which OS to install?
11
votes
3answers
13k views

How to best clone a running system to a new harddisk using rsync?

I have a system running as a server that has a failing harddrive. While all important data is on a RAID and backed up and all that, I don't have an image of the system itself. There is no specific ...
11
votes
1answer
4k views

How can I display additional boot and shutdown information on the Windows 7 welcome screen?

There is a small tweak, I believe it is a registry key, that allows to display additional information on the Welcome and Shutting down screens of Windows 7 (and most likely Vista, too). I have ...
11
votes
3answers
2k views

Is there a way to make Windows 8 delay loading the start screen until all startup programs have loaded?

Currently Windows 8 will get to the start screen a good 10-15 seconds before my startup programs have loaded. Since these include my touchpad driver as well as a gamma correction program, I would ...
11
votes
2answers
17k views

How can I move the boot sector to another drive?

When I installed Windows 7 on my new SSD it seems I messed some parts up during the partition selection, and now I have my system partition with the boot sector on another harddrive, and the boot ...
11
votes
7answers
138k views

The boot selection failed because a required device is inaccessible 0xc000000e

A family member of mine recently went on vacation and turned off their computer, something they normally do not do, upon returning home it would not turn on and now returns a black screen with the ...
11
votes
3answers
88k views

How to get into BIOS when USB keyboard is not powered and have no PS/2 ports?

Just got a new Windows 7 PC (64-bit) with an Intel DH67CL motherboard. It's been working fine but I decided I wanted to try to get into the BIOS. Unfortunately I can't do it because my USB keyboard ...
11
votes
6answers
3k views

How do I prevent disk renumbering on reboot in OS X?

I have 3 physical drives in my Mac Pro with Mac OS X 10.6.4. Occasionally after rebooting the machine, the disk numbering changes such that the /dev/disk# does not reference the same drive as it did ...
11
votes
3answers
7k views

How do I get Windows 8 to measure startup impact?

I did an inplace upgrade from Windows 7 Ultimate to Windows 8 Pro, and am just getting used to Windows 8. Under the Task Manager → Startup tab, I see there's an option showing "start up impact". ...
11
votes
2answers
15k views

Tools to modify UEFI Variables in Windows/Linux?

I have a DELL machine that use Phoenix SecureCore Tiano as its UEFI/BIOS However, it is totally not configurable as its UEFI shell & menus are hidden in BIOS Setup. I'm wondering if there were ...
10
votes
6answers
864 views

How to open a file the next time the Windows computer boots?

I'm going to be fixing a family friend's computer later and won't be interacting with the computer owner personally, so I would like to have a readme.txt to automatically open the first time (and only ...
10
votes
9answers
40k views

Is possible to boot on PXE over a WiFi device?

As I know it is possible to boot up some bootable images (like Linux, Clonezilla, management applications and others) over a PXE (Preboot Execution Environment) server with an Ethernet device (802.3). ...
10
votes
3answers
43k views

How do I tell Windows 7 to never Launch Startup Repair

I have a Windows 7 (64-bit) virtual machine that I primarily remote desktop into. Sometimes on boot something goes wrong and it displays the following DOS screen: Windows ...
10
votes
6answers
37k views

WIndows 7 cannot boot - bootrec reports FS not found or corrupt

For 3 days now I've been unable to boot into my Windows 7 partition, and all my research has been to no avail. I'm hoping someone here has more ideas on how to fix this. When I boot up now, I get the ...