A bootloader is a program that loads and launches a program or an operating system from boot.

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62
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9answers
259k views

How can I repair the Windows 8 EFI Bootloader?

I installed Windows 7 and Windows 8 in EFI mode on a hard disk some days ago. Today, the bootloader got missing/corrupted. I currently have the Windows 8 installer on a flash drive and tried using ...
26
votes
3answers
20k views

How can I keep multiple live/bootable ISO images on a single USB drive?

I am looking to create a USB flash drive that I can put multiple live CD ISO images on and select which boots from startup. The ideal candidate supports Linux and Windows-based ISO images, and is ...
21
votes
1answer
90k views

How can I add Linux to the new Windows 8 boot manager?

Which OSes can be put into the new bootloader that Windows 8 provides? It seems to be quite pretty and consistent with the rest of the new Windows 8 design, so it would be cool to put Linux (Ubuntu) ...
21
votes
3answers
3k views

Why do we need a boot loader?

After the BIOS, or something similar that serves as a firmware, is started, the control is passed to the bootloader, as far as I know. Why can't the BIOS load the OS kernel directly? Also, the ...
13
votes
3answers
48k views

How to restore windows 8 GUI boot-loader after installing windows 7?

I have installed window 7 after installing windows 8, so windows 7 boot-loader is now the default boot-loader But i want to restore windows 8 graphical boot-loader back again so what to do ?
13
votes
4answers
1k 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 ...
11
votes
3answers
65k views

How do I make my Boot Camp partition bootable again?

I needed to resize my Boot Camp partition so I used Gparted to move and resize it. This seemed to work, except that now I can't boot into Windows. I can boot into OS X just fine. OS X can recognize ...
10
votes
4answers
7k views

What differences are between firmware and software/OS?

I was wondering what differences are between firmware and software? What differences are between firmware and OS? Are boot-loaders firmware? Bios is. How about GNU grub? Is grub software or firmware? ...
9
votes
1answer
2k views

What needs updating when moving a bootable Windows 7 (or Vista) partition?

When I move a bootable NTFS partition with Windows on it to a different block offset, what needs updating to make it bootable again? Background: I plan to write a program that performs the necessary ...
8
votes
3answers
2k views

Is it possible to boot Windows 8.1 without its own bootmanager?

I have been trying to come up with an easier way of installing Windows and Linux dual booting on my laptop, not necessarily in that order. What we generally have to do is install Windows first, and ...
8
votes
2answers
2k views

How to get rEFInd working with FileVault 2 on OSX 10.8

I installed rEFInd on my new Macbook Air which I planned on using to do a dual boot to Linux, but prior to installing Linux, I decided to encrypt my drive. I knew I was going to do this, so I had ...
7
votes
2answers
8k 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 ...
7
votes
2answers
12k views

Install GRUB bootloader without installing Linux

I have Windows 7 installed on the system and I want to create a separate WinPe bootable partition which system can fallback when things go wrong. Now Win7 does give this option and i might also edit ...
7
votes
2answers
1k views

How to identify USB-sticks that will appear as non-removable before buying?

For a home lab project, I'm going to install Microsoft Hyper-V Server 2012 on a USB-stick. The process is described in this guide (for Hyper-V Server 2008 R2, but also works for 2012): Deploying ...
6
votes
2answers
18k views

How to remove boot loader entry on Windows-8?

I have just installed Windows-8 preview twice, because at first I accidentally installed it at the wrong partition and now I have got 2 entries with Windows-8 in the boot loader and would like to get ...
6
votes
3answers
6k views

Dual-booting Windows and Linux: Why install Windows first?

I've read that, when configuring a dual-boot system, you should install Windows first to avoid any issues. However, I have not read an explanation that makes sense to me. Some questions: I'm ...
6
votes
2answers
4k views

Why 100MB ext2 boot partition recommended for linux?

A lot of people recommend a separate ext2 boot partition with around 100MB space for Linux installations. What is the significance of this separate boot partition.
6
votes
2answers
15k views

Can I fix error 0xc0000225 without reinstalling Windows?

I have a system which dual-boots Gentoo Linux and Windows 7 using GRUB2. The computer has four drives, and Windows is installed on the third (last) partition of drive #2. The drive layout looks like ...
6
votes
4answers
11k views

Multiple Operating Systems or ISO's Bootloader for a USB Stick?

I have no idea how to do this. I have 7 iso's that I want to be able to easily boot from using a USB Stick and they are: Windows 7 Ultimate x86 Windows 7 Ultimate x64 Windows 8.1 x64 Hirens BootCD ...
6
votes
3answers
660 views

Is there a way to prevent Windows 8 upgrade from erasing the bootloader?

Is there a way to tell the Windows 8 installer not to erase the grub bootloader? For example, changing something in the OEM folder or some kind of slipstream technique similar to how it is possible to ...
6
votes
2answers
4k views

I got an “NTLDR is missing” on Win XP and fixed it, but why did this happen and how did this fix work?

So, believe me, I've read all the related posts on how to fix "NTLDR is missing" issues on SuperUser and this is not that question. I actually did manage to fix my problem, but I don't entirely ...
6
votes
4answers
562 views

Selected wrong OS from bootloader settings and now can't do anything

I'm trying to help a friend out with an urgent issue he is having. He has two Windows 7 installations when he was starting up his computer so the bootloader menu was making him select an OS every ...
5
votes
4answers
4k views

How to make Windows bootloader the default?

When I got a new computer, I installed Ubuntu and Windows XP on it. When I turn it on, GRUB shows up and lets me choose between the OSes. All right so far. A while later, I decided I don't want ...
5
votes
1answer
1k views

What is “bootsect.bak” file?

What is Bootsect.bak backup file? Is this file a copy of boot loader or boot sector? if it's a boot sector's copy, why it's needed? because MBR is a fixed sector.
5
votes
3answers
44k views

Missing boot files in Windows 8

I had a partition with Windows 8 Release Preview, Windows' System Reserved partition and the empty space of the beginning of disk. I moved two partitions to the beginning of disk using Ubuntu Live CD ...
5
votes
2answers
5k views

Can I dual boot Linux and Windows 7 but use the Windows bootloader instead of GRUB?

Is it possible to have the Windows bootloader point to Windows 7 and a Linux partition instead of using GRUB to point to Windows 7 and Linux? Any links to tutorials, guides, or how-tos would be ...
5
votes
4answers
5k views

How to fix GRUB after Windows breaks it, and how to edit the GRUB menu

I had Windows XP and Ubuntu both installed. I could easily boot into either until Windows "fixed" the bootloader so that it now only boots into Windows. I guess there is no way to prevent Windows ...
5
votes
2answers
188 views

Is it safe to overwrite LBA 2-2047

So back when I used WUBI before settling on using a VM, GRUB was installed (but I messed it up and had to reinstall everything (luckily I backed up)). That was back when I used Vista which starts at ...
5
votes
1answer
341 views

Triple booting on a Mac Book [almost there]; boot loader issues

Here is my current GPT/MBR partition table: Current GPT partition table: # Start LBA End LBA Type 1 40 409639 EFI System (FAT) 2 409640 663646255 Mac OS X ...
5
votes
2answers
209 views

Boot windows 7 from a disk image of custom format

Windows 7 has an ability to boot from alternative sources besides plain disk partitions - for example it can boot natively from VHD or WIM. Is the handling of above mentioned formats hardcoded into ...
4
votes
1answer
8k views

How do the 'EFI system partition' and UEFI *.efi files relate?

I read that there needs to be an EFI system partition. The EFI System partition is a partition on a data storage device that is used by machines that adhere to the Extensible Firmware ...
4
votes
1answer
5k views

How do I install the Windows 7 boot loader?

I have 2 hard disks, on first I have installed win xp. I boot into xp and run setup of win7 and installed it on second hard disk. Now the problem is that win7 bootloader is installed on first ...
4
votes
3answers
7k views

How do I set Windows 7 as default OS but retain Windows 8 Boot screen?

I am dual-booting between Windows 7 and Windows 8 on a test workstation, and typically reboot 3-4 times per day. If I set Windows 8 as the default OS, I get the Windows 8 graphical boot screen, which ...
4
votes
3answers
365 views

Windows XP ruined my Windows 7 bootloader and rescue disc doesn't works, what do I do now?

I have 3 HDDs, one for Windows 7(x64), the other for Ubuntu(x64 too) and XP, and the 3rd for Ubuntu's SWAP and storage. XPs bootloader copied itself on top of both 7s and GRUB. No biggie at first, I ...
4
votes
6answers
55k views

Grub rescue, unknown file system. Can't boot into Windows 7

I am confused, so I am also going to use this question to get clarification and fix my computer. Some background: I had Windows 7 on a 1 TB HDD and decided to partition my hard drive into two ~500 GB ...
4
votes
2answers
43k views

How to set boot disk flag with diskpart

My Windows Server 2008 R2 won't start and stops with Stop 7B, so I start the recovery console and use diskpart to check the disk. There are to partitions one of Type 17 and one of type 07, the detail ...
4
votes
5answers
1k views

Windows 8 bootloader replace Windows 7's?

I installed Windows 8 on my system which already had Windows 7 (dual boot) My question is, did Windows 8 install its bootloader on the Windows 7 partition, and effectively replace it? EDIT: I did ...
4
votes
2answers
10k views

Ubuntu 11.10 doesn't boot after installation, only boots into Windows 7

Windows 7 was pre-installed on my machine. Ubuntu 11.10 doesn't boot after I installed it. Once Ubuntu finished its installation, I restarted. After that, it just boots straight to Windows 7, no ...
4
votes
4answers
18k views

How do I install GRUB to a USB drive using Windows Vista?

I'm trying to build my recovery usb key drive. I'd like to use GRUB as my bootloader. How do I install GRUB to my usb's MBR? Lots of examples out there seem to expect I'm running Linux.
4
votes
2answers
5k views

Windows on a Chromebook

I heard that it would be possible to install Windows on a chromebook in this blog article and I found a tutorial for installing Windows on the older model CR 48. I own the newer model Samsung Series 5 ...
4
votes
3answers
7k views

How to move the Windows 7 bootloader to the Windows 7 partition?

I recently installed Windows 7 in a triple boot setup alongside XP and Linux. When I was finished and was in the process of restoring the bootloader for Linux I discovered something strange about what ...
4
votes
1answer
5k views

How to boot directly into Vista and Windows 8 from Grub without the Microsoft boot manager?

I have Vista and Windows 8 installed each on a primary partition and use Grub as boot manager. The problem is that Grub can no longer directly boot into Vista after the installation of Windows 8, as ...
4
votes
1answer
1k views

Why does GRUB load after I select my Ubuntu Partition from Windows Boot Manager?

So first of all I'm running Windows 7 on one drive, and Ubuntu 9.04 on another. I downloaded and installed Easy BCD 2.0, which I have to say is an excellent piece of software. I used to have grub as ...
4
votes
1answer
722 views

Dual boot Windows 8 and Ubuntu 12.10 across a reboot

My Setup: I have two separate SSDs, and each contains an independently bootable OS - W8 and U12.10. From my extremely limited knowledge, this means each has a functioning EFI partition(?). My ...
4
votes
3answers
30k views

How can I create a bootable DVD iso from a USB drive?

There seems to be a lot of questions / answers about doing the reverse, but not as much info for USB -> DVD. Problem I created a bootable USB drive using YUMI. The USB drive is working great, and ...
4
votes
4answers
7k views

Proper way of installing new SSD in a dual-boot machine

I've recently purchased a SSD where I plan to install Windows 7 from scratch. I't has a SATA 6Gbps interface. The machine where it is going to be installed is a dual-boot PC with a single HDD ...
4
votes
2answers
657 views

how to broadcast a PXE server like Trinity Rescue Kit

I would like to set up a portable PXE server for diagnostic purposes. The issue is that I won't always have access to the DHCP server, or the router itself (sometimes a home router) doesn't have an ...
3
votes
3answers
874 views

Looking for a free bootloader [closed]

I've heard recommendations from other people before that simply having a bootloader can make it so much easier to add and remove operating systems from my system. What is the best (preferably free) ...
3
votes
5answers
452 views

Windows 8 wont boot after deleting files in C drive from ubuntu

I have done a very stupid thing. I deleted some folders in the C: drive from ubuntu. In result, I cant boot to windows anymore. It starts the boot animation and then keeps rebooting. I tried ...
3
votes
1answer
455 views

Does Windows 8 contain a boot loader?

Does Windows 8 come with a boot loader? Like Lilo or Grub? Or do we still have to use a third party one?