Dual Boot Windows 8 & 7 Help On HP Pavillion G9-1178CA

Hello Guys I Just Need Some Help From You Guys So when I Try To Dual Boot Windows 7 & 8 it says that this partion is dynamic or something like that
And i do not have ubuntu Dual booted so please help me thank
-Sam

Hi,
To rebuilt boot loader, I suggest we can try following command when you enter Windows 8.1.
Run cmd as administrator and type following command:
BCDboot [Partition Letter with windows 7 installed]:\windows
Note: if you installed Windows 7 on Partition F, the command can be write as: BCDboot F:\windows.
Then, restart and boot into Windows 7.
What’s going on?
Kate Li
TechNet Community Support

Similar Messages

Dual boot Windows 7 partition help

I want to dual boot Windows 7 & arch but I need help with figuring out what partitions to make and where to put them because it seems the automatic partition-er won't do the trick for me.
I have two drives that I want to completely format for a fresh, clean install: a 60GB SSD & a 750GB hard drive. I want the end result to be that the SSD only has Windows 7 Pro x64 SP1 installed to it and I will point the 'My Documents', 'My Pictures', etc. to a NTFS partition on the hard disk drive ( I know how to do this folder pointing ). I don't want arch to touch the SSD if possible so I can reformat the SSD separately if I ever just want to reformat Windows. I only want arch to be on the hard disk for that reason. I don't think I care which one handles the OS switching at boot ( should I favor Windows MBR or syslinux? Please give advice. ) And I would assume I make the NTFS partition on the hard disk a primary partition so how do I split up arch for the 3 other primary partitions left since the auto partition from the arch boot CD uses 4?

I'm no expert, but the way I would do it would be like this:
1. Create partitions on the HDD for /, /boot, /home and swap, along with one (or more) for your Windows personal files
2. Set the BIOS to boot from the SSD.
3. Install Windows on the SSD.
4. Right-click the "My Documents" folder, select "properties", then the "Location" tab and choose the new location for the folder.
5. Install Arch on the HDD partitions, and allow the boot manager to install itself in the MBR of the SSD.
Then the whole boot process will be on the SSD... If you ever need to get rid of the Linux bootloader, you can overwrite it with a "clean" Windows one using bootrec.exe (see here: http://support.microsoft.com/kb/927392).
Last edited by esuhl (2012-03-26 04:52:12)

Lenovo C340 i3 System - Dual boot windows 7 / 8 cant load windows 7 please help

Hi there
I have a lenovo c340 all in one pc the i3 processor type which came with windows 8
I have purchased a new hard drive and would like to dual boot windows 7 and 8
I have tried to install windows 7 and the system hangs before I even get into any configuration however windows 8 loads fine
I have looked in the bios and the system is showing windows 8 . has lenovo locked the bios to allow windows 8 only ?
Is there a way to load windows 7 onto the system ?
I really want to dual boot and have downloaded all of the drivers for windows 7 but for the life of me I can not get past the initial boot screen of my windows 7 disc
Can anyone help please

hi botards01,
If you're planning to use linux occasionally (Ubuntu for example) and you don't want to risk losing the One Key Recovery functionality, try to install Ubuntu via Wubi as this doesn't repartition your HDD but creates a virtual disk on your current OS.
Check it out - Install Ubuntu in Windows With Wubi
Hope this helps
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I really need help dual-booting Windows 7 on my Macbook Pro

Hi. I am totally lost in dual-booting Windows 7 on my Macbook Pro. I got rEFIt, but I don't know what I need for the Windows 7 part. Do I put an .iso file on a flashdrive? Or can I just do it easier with a physical disc of Windows 7? If you could, please have somewhat indepth steps, as I have no knowledge in this field.

You don't need rEFIt. But you do have to start with an unpartitioned startup drive. You create the Windows partition using Boot Camp Assistant in the Utilities folder. Open BCA and click on the large button to print out the documentation. Then read it carefully before proceeding. You will need a bootable Windows DVD, not an ISO file. You need to use the computer's optical drive because Windows will neither install nor boot from an external optical drive.

Dual boot windows mac mini

I got a Mac mini and in general I'm happy with it but found out that there's some software I use regularly that is just much better on Windows. They barely support OS X although technically they do. So I would like to dual boot Windows as it seems like this is supported and not crazy.
I followed the bootcamp and some guides I found via Google. I have the mac mini 2014 with 8 gig ram and 1 terabyte of space. I have dual monitors setup and a logitech mouse and a logitech gaming keyboard G110 - both USB. (I also own a wireless apple keyboard which I occasionally use with my iPad). My first problem was a DOS screen telling me I can't boot up on the specified disk but I did get some help off Google telling me to hold down option while booting (this should be in the guides ;p) but it was easy to fix.. however I'm stumped on what's happening now.
When I click the Windows partition, it starts booting up Windows 7 Premium 64 bit setup and all looks good. Then a screen pops up asking me what language/region I am. The default is United states (perfect). On this screen my keyboard and mouse are useless. Or it's frozen. I think the former. I think the computer just can't recognize them. And I cannot figure out a way around this. If anyone can - please help I will be very thankful.
I've tried booting up using the Windows 7 DVD I own and an ISO installed on a USB flash drive per the Bootcamp installer. Results are the same.

Use Boot Camp!! Sounds like you have the install disc. Make sure you completely erase a USB 2.0 Thumb Drive format it as one MS DOS Master Boot Record partition. Download Drivers to it. I checked this box in boot camp only.
Having install disc and driver thumb drive ready. Insert Windows install disc and plug in Thumb drive.
Open Boot Camp uncheck first 2 boxes. Continue
Size the BOOTCAMP partion you want it to be by sliding the bar. Or split your HD is an option.
After that is complete. You will be asked where to install. Select BOOTCAMP partition
Click Drive Options (advanced). Click Format. Click OK. All goes well you click Next and it will format as NTFS
Follow instructions to to install, set up and configure Windows.
GO TO APPLE SUPPORT no where else. PRINT BOOT CAMP Installation & Setup Guide. It is in my binder with my Windows 7 Professional Disc. You'll need this, I'm afraid, to have on hand. When Windows is up and going, Antivirus 1st, Install Windows express updates only. Do not update Apple drivers for Windows. Running Windows 7 Pro on my Mac Mini since I bought it in August. Use it for those outdated programs I can't run on Mac or Windows 8. Love it.
GET THE MANUAL Please. Have fun with it.
Oh, try left clicking your USB Mouse to make it work. If not use keyboard strokes. i.e. I a ccept the license agreement (note that the a is underlined. hit "a" on the keyboard to check box.

T440P Dual Boot Windows 8 with Centos 7

So I have a T440p with Windows 8 installed. I have been trying to dual boot Centos 7 and also have attempted Centos 6.5. I have been using a bottable USB to perform the installation for both Centos 7 and 6.5.
When I try the Centos 7 install, I set the boot priority to USB first on startup, and it goes to a screen that lists options to install, verify Centos 7 or troubleshoot. Upon selecting any of these options, everytime I get the error message:
"alua: not attached"
When attempting the Centos 6.5 Live DVD install, I try to boot into the Live mode, but it freezes in the process each time.
I have heard about there being issues dual booting Windows 8 in UEFI mode with another Linux Distrobution.
Has anyone here sucessfully dual-booted Centos or any other Linux Distrobution on a T440P?
Any help/advice would be much appreciated.
Thanks

It's been many, many years since I don't do dual boot anymore. Don't find the reason to do it, either. Different kinds of virtualization should be enough. Anyway...
dfw1417 wrote:
It took over 2 days to figure out how to adjust the bios to get my win 7 pro DVD to boot and install dual boot on this GREAT MACHINE!!
ENJOY! This is the BEST machine I ever had!
WHICH machine?
Cheers.
If I helped you, please give me some kudos! ^^

How to dual boot window 8.1 64 bit with xp sp1?

Hello Hp PC Experts,
Sir i was bought HP 15-r119TU two week ago. So i face problem of dual boot with this HP note book. I need dual boot window 8.1 64 bit with XP SP1. Kindly help me at the earliest possible.

@mp56
‎Thank you for using HP Support Forum. I have brought your issue to the appropriate team within HP. They will likely request information from you in order to look up your case details or product serial number. Please look for a private message from an identified HP contact. Additionally, keep in mind not to publicly post ( serial numbers and case details).
If you are unfamiliar with the Forum's private messaging please click here to learn more.
Thank you,
Omar
I Work for HP

Y500 dual boot windows 8 and fedora 19 problem

I bought a y500 two days ago and i wanted to dual boot windows 8 and fedora 19, so here's what i did
1. downloaded fedora 19 (x64) iso from the fedora website.
2.made a live USB using live usb creator.
4.opened disk management utility and shrunk the c drive (windows 8 was installed here) by 100 gb and kept the 100gb unallocated.
3. started the laptop with novo button, changed the bios config to boot from usb.
4.installed fedora from usb, selecting the 100gb unallocated memory for installation
5.restarted the laptop.
now the problem is fedora works perfectly but when i try to boot windows 8, the following error is shown.
windows failed to start
file:\BOOT\BCD
status: 0xc0000225
info:the boot configuration data for your PC is missing or contains errors.
i am guessing the fedora installation overwrote the boot files of windows and
i have not taken a backup. please help

hi,
I have a Y500 and I wanted to dualboot fedora 19 with windows 8, this proved to be unsuccessful. I had made a repair disk before the process (but not a set of recovery disks unfortunately >.< ). now I inserted the repair disk and selected the automatic repair option, it showed a message that auto recovery has failed. now when I pressed the NOVO button and selected the system recovery option, it does not go into the OKR menu but continues with the normal booting process. Can somebody guide me or give links where I can find step by step instructions to making OKR work and reset my laptop to factory settings? PLEASE help As Soon As Possible
NOTE: I did resize the windows 8 os partition but the recovery and the lenovo partition are still untouched

Dual booting Windows 8 and Arch Linux with UEFI

Hi all!
I'm trying to install Arch Linux on my computer where I already have Windows 8, and I'm getting a little stuck when it comes to the partitioning.
Following the beginner's guide and the method here: https://wiki.archlinux.org/index.php/Un … n_in_Linux for setting up the partitions properly, regarding UEFI. My problem is that when using cgdisk to set up a new EFI system partition (ef00), I get an error message when trying to write the partition table (just saying that something went wrong). I figure the problem is that I already have a partition like this (correct me if I'm wrong), but it really looks like it succeded (see info below). So my question is: How do I preceed to keep my Windows 8 installation happy, but installing Arch? Do I remove the old EFI system partition and create a new one, or is there some method that allows me to edit the already existing one, to allow me to dual boot Windows 8 and Arch?
My partition table now looks like this:
Part. # Size Partition Type Partition Name
1007KB free space
1 500MB Windows RE Basic data partition
2 300MB EFI System EFI system partition (this one was already present on my system)
3 128MB Microsoft reserved Microsoft reserved partition
4 63.5GB Microsoft basic data Basic data partition
8 512MB EFI System EFI System partition (this is the one I tried to create when I got the error message)
5 29.5GB Linux filesystem Arch (this is where I was going to put my Arch installation)
6 22GB Windows RE Basic data partition
7 1024MB Windows RE Basic data partition
615KB free space
Just for the record; I only created partition #8 and #5.
Any help is appreciated! And sorry for beeing a total noob, but I really suck at this.

sudo make sandwich wrote:If it is possible to share ESP between OSes, how do I do this (would it be sufficent to follow this section: https://wiki.archlinux.org/index.php/Beginners'_Guide#For_UEFI_motherboards)?
There's really very little to do to share an ESP between OSes. Most OS installers will auto-detect the ESP and use it. Problem solved. For Arch it may be a bit more effort just because Arch uses a more hands-on installation process, but I've only done a couple of Arch installations, and the last one was several months ago, so I don't recall the details clearly enough to comment.
And how big will the partition need to be? The beginner's guide says 512MB or higher.
I don't know what was in the mind of the author, but my guess is that's because that's roughly the cutoff point where mkdosfs starts creating FAT32 by default rather than FAT16. The ESP is officially supposed to be FAT32, not FAT16, although FAT16 usually works OK. It's also possible to create FAT32 on smaller partitions by using an explicit option to mkdosfs ("-F 32").
The optimal size of the ESP depends on the files stored on it. If you don't store your Linux kernels, something as small as 100MiB is usually adequate; but a few Linux kernels and their initrd files can consume twice that amount. My own recommendation is for the ESP to be 200-500MiB.
The only error message I got from cgdisk is "Problem saving data! Your partition table may be damaged!", however booting Windows again works fine. Parted did not complain about antything.
Use the "verify" function in cgdisk. That will reveal any problems with the data structures. If a verify turns up OK, then that means that cgdisk ran into some sort of disk problem. Running gdisk rather than cgdisk and using the gdisk "w" option (without making any changes) may produce a more helpful error message.

Dual Booting Windows and Solaris

Hi
how do i dual boot windows and solaris
Do i install windows first and then solaris or do it the other way around..?
how do i make sure that Windows and Solaris appear in my boot options..?
Is their a guide on doing this...?
Thanks
Liam

Hey I did a quick google search for you. So I havent tried this method myself but it sounds reasonable.
The text below is from the following link:
http://www.hccfl.edu/pollock/AUnix1/DualBoot.htm
"Solaris boot loader
Partition the drive to leave at least 2GB of space available for Solaris;
more drive space is desirable.
As with Linux, install Windows first then Solaris.
Do not use the Installation CD but boot and install
from Software CD 1.
If you accept the default partitioning scheme which
the installer provides you will soon run out of space in
your / and /usr partitions since only enough space is
allocated to install the system.
All extra space is allocated to /export/home.
A typical installation on a 4.5GB partition might look
something like this:
Filesystem Size Used Avail Use% Mounted on
/dev/dsk/c0d0s0 900M 536M 310M 64% /
/dev/dsk/c0d0s1 334M 109M 192M 36% /var
swap 671M 8.0k 671M 1% /var/run
swap 671M 8.0k 671M 1% /tmp
/dev/dsk/c0d0s5 845M 222M 565M 29% /opt
# (FAT32 partition):
/dev/dsk/c0d0p0:1 5.0G 3.3G 1.6G 66% /c
/dev/dsk/c0d0s7 1.1G 92M 954M 9% /export/home
/dev/dsk/c0d0s4 752M 225M 474M 33% /usr/local
The Solaris boot selector enables you to choose either
Solaris or Windows with Solaris as the default.
(I prefer grub or lilo!)
To mount FAT under Solaris:
# mount -F pcfs /dev/dsk/c0d0p0:c /dos (or �:1�?)
And the vfstab file:
/dev/dsk/c0d0p0:c - /dos pcfs - yes -
To create a GRUB boot floppy, follow these steps:
$ mkfs -t ext2 /dev/fd0
$ mount /dev/fd0 /mnt/fd0
$ mkdir /mnt/fd0/boot /mnt/fd0/boot/grub
$ cp /boot/grub/stage[12] /boot/grub/grub.conf \
> /mnt/fd0/boot/grub
$ /sbin/grub --batch <
Hope this helps!
/Oscar

Dual Booting Windows 7 with pre-installed Windows 8 Laptop

Hi All,
Just after a bit of advice, my girlfriend has recently got a new laptop and unfortunately she doesn't like it, despite me loving Windows 8.1.
She would like to try Windows 8 but is going back to Uni soon so would like Windows 7 as a back-up dual booted.
I've shrunk the partition and created a simple partition for Windows 7 but really unsure about Installing Windows 7 on a Windows 8 Laptop, it's an ASUS X550CA-XX417H. I've checked power shell with SecureBootUEFI and result is True.
What would be the best way to dual boot?
Cheers,
Ben

Hi Ben,
Here is a detailed guide for your reference:
How to Dual Boot Windows 8 with Windows 7
http://www.pagestart.com/win8dbwin701181301.html
This response contains a reference to a third party World Wide Web site. Microsoft is providing this information as a convenience to you. Microsoft does not control these sites and has not tested any software or information found on
these sites; therefore, Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there.
Hope this could be helpful.
Kate Li
TechNet Community Support

Advice on dual-booting Windows 7 with UEFI motherboard

I'm going to build a desktop PC tomorrow, having finally purchased all the parts for it. I'll be installing Arch as my main OS, and Windows for gaming. However I'm not really versed in UEFI and its uses, advantages/disadvantages; since my laptop just uses BIOS.
My plan is to have 3 drives: 32GB SSD for the / partition, 1TB HDD for /home, and 500GB for Windows 7 x64 Ultimate.
Being unused to UEFI I was thinking about trying to just run everything in BIOS/Legacy mode, but that doesn't seem very sensible to me, especially since I have the hardware so I might as well use it.
So, reading the wiki and forums have led me to conclude that having a 1GB EFI System Partition on the SSD should be sufficient, and use gummiboot for my bootloader.
Other reading about setting up dual boots suggests to me that installing Windows 7 on its own HDD with MBR partitioning and Arch on a separate (set of) drive(s) with GPT partitioning will be sufficient. The reason being that if the BIOS is set up to boot sda, which has GRUB as its bootloader, using GRUB I can choose to boot into Windows despite it being on a separate hard drive.
My questions are (and it occurs to me that I am in the most part just looking to have my ideas confirmed):
1. Have I gotten this all completely wrong?
2. If I'm correct, can the above system of using GRUB on one drive to boot up an OS on another drive be applied to UEFI?
3. Has anybody tried/succeeded/failed to dual-boot in this fashion before me, and if so what did they do?
Thanks one and all! Hopefully I've made myself clear enough here

billodwyer wrote:Being unused to UEFI I was thinking about trying to just run everything in BIOS/Legacy mode, but that doesn't seem very sensible to me, especially since I have the hardware so I might as well use it.
Using BIOS/CSM/legacy mode can work fine; however, it will probably slow down the boot process by a few seconds, and it will close off some possible future (and even current) advantages, as EFI support in Linux is improved.
So, reading the wiki and forums have led me to conclude that having a 1GB EFI System Partition on the SSD should be sufficient, and use gummiboot for my bootloader.
A 1GB ESP is more than sufficient. In terms of space requirements, 100-500MB is enough, depending on how you use the ESP; but various bugs and default settings make me recommend 550MiB as a good size. Bigger is OK, but wastes some disk space.
A bigger issue is that the ESP won't really benefit much from being on your SSD, since it's read once at boot time. The biggest advantage to putting the ESP on the SSD in your setup is that if you use gummiboot, you'll also have to put the Linux kernel and initrd file on the ESP, so having them on an SSD will speed up the boot process by about 1-5 seconds. Overall, I'd probably put the ESP on one of the spinning disks.
One more comment: gummiboot can launch boot loaders from its own partition but not from other partitions. This can work fine if you plan things carefully, but with three disks and two OSes, you must be absolutely positive that Windows uses the ESP on which gummiboot is installed. I'm not an expert on Windows installation, so I can't offer any specific pointers or caveats on this. If you need something with more flexibility, both rEFInd and GRUB can redirect the boot process to other partitions or physical disks. rEFInd can also redirect from an EFI-mode boot to a BIOS/CSM/legacy-mode boot. (See below.) Overall, rEFInd's flexibility on this score is a plus compared to gummiboot; but gummiboot is covered in the Arch wiki's beginner's guide, which is a plus. You'll have to pick which advantage you prefer. (Note that I'm rEFInd's maintainer, so I'm not unbiased.)
Other reading about setting up dual boots suggests to me that installing Windows 7 on its own HDD with MBR partitioning and Arch on a separate (set of) drive(s) with GPT partitioning will be sufficient. The reason being that if the BIOS is set up to boot sda, which has GRUB as its bootloader, using GRUB I can choose to boot into Windows despite it being on a separate hard drive.
This is an unworkable idea, at least as stated and if you want to do an EFI-mode boot. Windows ties the partition table type to the boot mode: Windows boots from MBR disks only in BIOS mode, and from GPT disks only in EFI mode. Thus, using MBR for the Windows disk will require a BIOS/CSM/legacy-mode installation of Windows. Furthermore, neither gummiboot nor GRUB can redirect from EFI mode to BIOS mode (or vice-versa), so if you do it this way, you'll be forcing yourself to boot Linux in BIOS mode, to switch between BIOS-mode and EFI-mode boots at the firmware level (which isn't always easily controlled), or to use rEFInd to redirect from an EFI-mode boot to a BIOS-mode Windows boot.
Overall, you're best off either using GPT for all your disks and booting all your OSes in EFI mode or using MBR for Windows (and perhaps all your disks) and using BIOS-mode booting for all your OSes.
Under EFI, the boot process is controlled by settings in the NVRAM, which you can adjust with "efibootmgr" in Linux, "bcfg" in an EFI shell, or "bcdedit" in Windows. (The Arch wiki covers the basics at least efibootmgr and bcfg.) In a typical dual-boot setup, you tell the computer to launch your preferred boot manager (EFI-mode GRUB, rEFInd, or gummiboot, most commonly), which then controls the boot process. You set up boot loaders for all your OSes on one or more ESPs. (Note: A boot manager lets you choose which boot loader to run, and a boot loader loads the kernel into memory. GRUB is both a boot manager and a boot loader. rEFInd and gummiboot are both boot managers. The EFI stub loader, ELILO, and the EFI version of SYSLINUX are all boot loaders but not boot managers. Most EFIs include their own boot manager, but it's usually primitive and awkward to use. It's also not standardized, so my computer's built-in boot manager is likely to be different from yours. Thus, I recommend against relying on the built-in boot manager for anything but launching your preferred boot manager.) Thus, the lowest-common-denominator type of setup is to put your preferred boot manager, the Windows boot loader, and a Linux boot loader (which could mean your Linux kernel) on a single ESP. If you want to use multiple ESPs or otherwise split things up, you cannot use gummiboot as the boot manager, since it can't redirect the boot process from one partition to another. (Many EFIs can do this with their own built-in boot managers, but this isn't guaranteed, and it's usually more awkward than using rEFInd or GRUB.)
I know this can be a lot to absorb. The official rules aren't really all that complex, but different EFIs interpret the rules differently, and the different capabilities of the various boot managers and boot loaders creates a lot of subtle implications for how you set everything up.
1. Have I gotten this all completely wrong?
Significant parts of it, I'm afraid; see above. You're working under BIOS assumptions, which don't apply to EFI.
2. If I'm correct, can the above system of using GRUB on one drive to boot up an OS on another drive be applied to UEFI?
GRUB can do this, but gummiboot can't. You set one of those (or something else, like rEFInd) as your primary boot manager. Using both GRUB and gummiboot adds unnecessary complexity, IMHO. OTOH, setting up multiple boot managers or boot loaders is possible, and can give you a fallback in case one fails. For instance, there's a known bug that affects 3.7 and later kernels, mostly on Lenovo computers, that causes the EFI stub loader to fail sometimes. Thus, if you use rEFInd, gummiboot, or the EFI's own boot manager to launch the kernel via the EFI stub loader, having GRUB, ELILO, or SYSLINUX set up as a fallback can provide helpful insurance in case a kernel upgrade causes your normal boot process to fail.
3. Has anybody tried/succeeded/failed to dual-boot in this fashion before me, and if so what did they do?
Many people dual-boot Windows and Linux under EFI. There are a huge number of possible solutions. My own Windows/Linux dual-boot system uses:
rEFInd
rEFInd's EFI filesystem drivers
Linux kernels on Linux-native /boot partitions (two partitions, one for each of the two distributions installed on that computer)
The Windows boot loader on the ESP
This works well for me, but it wouldn't work with gummiboot instead of rEFInd, since gummiboot can't redirect the boot process to another partition. (gummiboot also can't automatically load filesystem drivers.) Arch Linux users who use gummiboot often mount the ESP at /boot, which enables gummiboot to easily launch the Linux kernel. Doing this with multiple Linux distributions would be awkward, though, since you'd end up with two distributions' kernels in the same directory.

Dual boot Windows Server 2008 R2 and RHEL 7 Server?

Do someone know how can I setup dual boot of Windows Server 2008 R2 and RHEL 7 Server?
I've tried to install Windows first, then shrink, then install RHEL there.
But GRUB2 loader doesn't offer to start Windows, only Linux in the menu. (probably Windows partition need to be added to grub2 somehow)

Hi Oleg Vazhnev,
Please refer to following article and check if can help you.
How
to add Vista/Windows 7 partition to Grub 2 (Ubuntu 9.10, Karmic Koala)
Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft
does not guarantee the accuracy of this information.
Meanwhile, please also refer to following video and check if can provide you more details of installation.
Install RHEL 7 in Legacy Mode (Dual Boot Windows Server
2008 R2)
Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft
does not guarantee the accuracy of this information.
If any update, please feel free to let me know.
Hope this helps.
Best regards,
Justin Gu

Dual boot windows from USB via grub?

HI all:
I recently had a motherboard failure on an existing PC on which I dual-booted Windows XP and Gentoo. I replaced that box with a new HP PC preloaded with Vista. Wiped that immediately, and installed ARCH. But, I would like to also boot XP, and, since my old hard drive is still OK (I have it in an external USB adapter), I was thinking that I might configure grub to point at an external USB drive like this:
# Windows XP
title Windows XP
root (hd1,0)
makeactive
chainloader +1
where "hd1" (I hope) would point at my old drive, now connected via USB. In this way, I am really booting from my HDD (where grub lives), but "chain loading" from my USB external. Can this work??
-dvh

dvh wrote:
I configured as shown in the wiki, but when I try to boot XP, I get a message that says something to the effect of "missing or corrupted <windows root>\system32\ntoskrnl.exe". I checked the disk and it seems to be there and OK. I get the feeling that it is either NOT finding the hard disk (or partition) or it cannot interpret the NTFS file system (but grub was able to boot this before,...). So, two questions...
1) how do I know what the designator for the external USB hard disk will be? I have speculated that grub will find it at "hd1", but maybe not?
2) does the target disk NEED a windows boot loader? as I said earlier, I used to dual boot it, so there is a grub loader on that disk also.
...ok, three questions...
3) anything else that I should consider??
Thanks again for any help.
-dvh
1) i don'tknow a way to check this, but the
missing or corrupted <windows root>\system32\ntoskrnl.exe message comes from the windows boot process,
so it seems grub is configured correctly.
The main problem is that BOTH grub and windows boot need to have the correct settings.
Windows takes the settings for boot from the boot.ini file in the root of C:\ , and that probably needs to be changed.
You will need some way to get read/write access to the windows C-drive partition.
Install ntfs-3g in archlinux (see NTFS_Write_Support ) and post the contents of boot.ini .

Dual boot Windows 8.1 with Yosemite

I'm attempting to dual boot Windows 8.1 on my parents iMac. I downloaded and successfully used Boot Camp 5 to partition the drive, giving the new section 50GB. I successfully installed Windows 8.1. Unfortunate now I cannot access the Yosemite partition. Boot Camp is not available in the Windows 8.1 I just installed, so the obvious option to use Boot Camp to reboot into OS X is not available. I tried downloading Boot Camp in Windows, but it won't install - error message indicates there is no location to install it to. I tried to restarting and holding the option key 12 separate times, it always boots into Windows without bringing up the any other option. I tried booting into safe mode and resting the PRAM several times, same outcome of booting into Windows; although Windows did not always boot it froze half the time. The idea was just be able to run some Windows games without purchasing another computer. Any ideas on what went wrong and how to fix it?

You do not need the Boot Camp drivers on Windows in order to start up in OS X. However, note that the option to start up with the Option (Alt) key is more tricky in those computers with a Bluetooth keyboard, such as the iMac.
In order to start up in OS X, you have to press the Option key since the startup sound has finished (if you do it before, your Mac will not recognize it) and hold it until you see all bootable partitions in the screen. Then, choose your OS X volume.
If you could not install the Boot Camp drivers in Windows, open Boot Camp Assistant after starting up in OS X and follow its steps (you will need a USB drive to save your drivers). Finally, start up in Windows, access to your USB drive through Windows Explorer and run the installer.

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