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How to dual-boot Ubuntu 12.04 and Windows 7

Windows 7 Dual-Boot Boot Menu

One tool that has seen very little or no change over the past several releases in Ubuntu Desktop is the installation program. So it is somewhat surprising that some users are having a hard time dual-booting Windows 7 and Ubuntu 12.04 using a tutorial written for Ubuntu 11.04.

Stemming from comments in that article, and email from readers, I decided to revisit that tutorial using Ubuntu 12.04. So the purpose of this article is to show how to dual-boot Windows 7 and Ubuntu 12.04 on a computer with one hard drive. And it will be on a computer with an existing installation of Windows 7. If there is a need to, you may reinstall your copy of Windows 7.

If you want to attempt this on a computer with two hard drives, see how to Dual-boot Ubuntu 12.04 and Windows 7 on a computer with 2 hard drives.

To get started, download an installation image of Ubuntu 12.04 from here. Depending on your platform, you may download the 32- or 64-bit image. Screenshosts used in this tutorial were taken from test installations using a 32-bit installation image in both a virtual environment using VirtualBox, and on real hardware. In either case, I did not encounter any errors that others have reported, so I am certain that if you follow this guide, you should have a computer with both Windows 7 and Ubuntu 12.04 installed in a dual-boot configuration.

So that anytime you reboot the computer, you should see Windows 7’s boot menu with two entries listed – Windows 7 and Ubuntu 12.04 (LTS). Then you may choose to boot into Windows 7 or Ubuntu 12.04.
Windows 7 Dual-Boot Boot Menu

Now that you know what the overall goal is, how do you get from here to there? First, understand that if you have a computer running Windows 7, that Windows 7’s boot manager is responsible for making sure that the system boots. Installing Ubuntu on the same hard drive throws another boot manager into the mix. So the most important decision you are going to make about this, is which boot manager (Windows 7’s boot manager or Ubuntu’s) do you want to be responsible for primary boot operations?

When dual-booting Windows 7 and a Linux distribution on a computer with one hard drive, the best option is to have Windows 7’s boot manager be the primary boot manager. Why? Because whenever you reinstall or update Windows 7, its installer will overwrite anything it finds in the portion of the hard drive where critical boot-related programs are installed. That portion of the hard drive is known as the Master Boot Record (MBR). Also, certain anti-virus programs have been known to mess with the contents of the MBR, so installing GRUB in another location will ease the maintenance headache associated with your system. This point determines where GRUB will be installed.

If you are not familiar with disk partitioning (in Linux) and dual-booting, it is highly recommended that you read guide to disks and disk partitions in Linux and tips for dual-booting Windows and Linux.

By default, a new installation of Ubuntu 12.04 is installed on two partitions – a main partition, and Swap. The main partition is usually a primary partition and the Swap, a logical partition. And if Ubuntu is the only operating system on the hard drive, you will see both partitions labeled /dev/sda1 and /dev/sda5. Because you are going to install it on a computer with another operating system on it, the partitioning scheme will have to change.

The recommended partition scheme that will work better with the system you are about to install will have at least three partitions. They are the:

  • Boot partition – This is where GRUB will be installed, instead of in the MBR. Installing GRUB in the boot partition is where users have encountered errors, so pay particular attention to what you do with this partition
  • Root partition – This is where all the programs will be installed
  • Home partition – This is optional, but it helps to have your files and folders on a separate partition
  • Swap space

I think what you need to do should be pretty clear now. Time to begin the process! If you have not done so already, burn the installation image (of Ubuntu 12.04) you downloaded to a CD or transfer it to a USB stick, and boot the computer from it. When booted from the CD, you will be given the option to boot into a Live Desktop or start the installation without visiting the Live Desktop. It does not matter which option you choose, but booting into the Live Desktop and starting the installation from there seems to be a very good choice.
Ubuntu 12.04 Live Desktop or Installer

Whether the installation process is started from the Live Desktop or not, clicking through the installer gets you to the step shown in the image below. The most important information here is the minimum disk space (4.4 GB) recommended for a successful installation of Ubuntu 12.04. That piece of information will help you determine how much disk space to allocate to the root partition.
Ubuntu 12.04 Installation Requirements

Clicking Continue from the previous step will land you here. If, as in this example, you have Windows 7 installed on the target hard drive, you should see the same three options shown here. Because you will be creating partitions manually, the option you want to select is Something else.
Ubuntu 12.04 Partition Options

That should bring you to the Advanced disk partitioning tool. Again, if we are operating from the same point, that is, if you have a default installation of Windows 7 on the target hard drive, you should see two ntfs partitions (/dev/sda1 and /dev/sda2) listed. The main Windows 7 partitions, also popularly known as the C drive, is your sda2. To install Ubuntu, you will have to resize that partition. Note: If have free unallocated space on the hard drive, you do not have to go through this partition resizing process. To resize the partition, select it and click the Change button.
Ubuntu 12.04 Advanced Partition Tool

That should open this window. The only thing to do here is tell the installer how much disk space you want to keep for Windows 7. The rest will be used for Ubuntu. The system used for this tutorial has about 324 GB of disk space. I chose to keep 100 GB for Windows.
Ubuntu 12.04 Partition Resize

So the window now looks like this. Click OK.
Ubuntu 12.04 New Partition Size

After the partition has been resized successfully, you should see the freed space marked as free space. Select it and click Add to start creating partitions for Ubuntu 12.04.
Ubuntu 12.04 Unallocated Partition Space

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ron
ron
11 years ago

Hi finid,
Thanks for the great tutorial!
I was having the same problem some other guys here had with getting stuck in the grub command prompt after following your tutorial (step by step). Im trying to install version 12.10 and my windows drive is partitioned into 3 partitions (OS, Recovery and another very small partition in the FAT format).
I must point out that i had tried installing Ubuntu before reading your tutorial through the wizard (that comes with the CD) using the “install inside windows 7” option and it seemed to have stopped during the installation (or maybe it succeeded, but i wasn’t even given the chance to set my password or anything…) so maybe this is the problem….
Anyways since then i tried running boot-repair through the live-CD and now when i restart my computer it first launches a Ubuntu screen that asks me from which drive i want to boot. if i choose Ubuntu it starts loading and says that something is missing (i press skip) and it never finishes loading.
if i choose windows, it loads to the windows boot up screen asking me which OS i want to boot from (but works fine if i choose windows).
What could be the problem and what can i do?
Thanks a lot!

ron
ron
Reply to  ron
11 years ago

i also found these files inside my windows OS drive: AutoNeoGrub0.mbr, ANG0 (and now i see also bootmgr).

ron
ron
Reply to  finid
11 years ago

I have tried what you said: i restored the MBR using BCD and then erased the linux partitions using Partition Wizard and then followed this article again and again the installation was unsuccessfull but in a different way… first of all, when i was making my linux partitions my pc seemed to be working very hard and just crashed all of a sudden. then i rebooted it and it kept on crashing even when i tried to access windows. so i waited a bit, rebooted again and windows went up…. i tried the process again, passed the partitioning part and during installation i went to do something else. when i came back the pc was out and i dont realy know if the insallation finished or it crashed during… anyways when i tried to boot through ubuntu after i turned it on, there was a windows message saying something about some failure.
my pc never crashed on me once before that. what might be the problem? should i try installing a different version or using a different media (such as a usb stick)? or should i just give up and thank god that my pc is still ok?

ron
ron
Reply to  finid
11 years ago

it is a dell studio-1558 notebook. it has: CPU – i5 M520
RAM – 4GB
Im using a single HDD of 500GB and im trying to install the 64bit version of Ubuntu.

ron
ron
Reply to  finid
11 years ago

is it normal for the installation to shut off the pc when it is finished? because from what i see in the installation tutorial at the Ubuntu website it should show a message that it has finished and asks you to restart (not shut it down automatically without asking the user).

ron
ron
Reply to  finid
11 years ago

yes… the furthest i have got is to where it displays all the features of Ubuntu after i have completed filling the information. I wasn’t paying attention both times to whether it completed the entire installation after that…

ron
ron
Reply to  finid
11 years ago

any suggestions? (BTW the pc does not reboot, it just shuts off).

ron
ron
Reply to  finid
11 years ago

i have tried installing again but this time from a usb stick (i thought maybe the pc might be shutting itself due to overhitting or something caused by reading from the disc). the installation went smooth and i when it was completed i was given the message to restart…
after restarting and booting through Ubuntu i was able to access my account and the first thing i did was to update the system. during update the pc crashed again. and when i tried to start ubuntu again it gave me a message that some file could not be found and after a while crashed again. i tried the different boot options in the ubuntu boot loader and in one of them i succeeded to enter my account again and then it crashed again.
i guess my hardware or something is not compatible with linux?

ron
ron
Reply to  finid
11 years ago

the ATI card…
what other linux distribution do you recommend? (im not that familiar with the linux “scene”)

ron
ron
Reply to  finid
11 years ago

isn’t there a simple solution that could be done to fix this behavior of ubuntu on my pc? like tweaking with the GPU drivers? (i have only just seen the distributions you listed, i will try them if nothing simple can be done)

ron
ron
Reply to  finid
11 years ago

before cleaning Ubuntu from my HDD i checked the GPU temperature and it was 97C and gradually rising. i tried installing propietary drivers for my radeon card but with no success (mainly because im new to linux).
I then installed Fedora (successfully) and although i didn’t experience crashes i noticed that the GPU temperature was about the same (97C and rising). the driver that was preinstalled was gallium 0.4 for radeon RV710 (or something like that). i then tried to install the ATI drivers and there were all sorts of instabilities until i couldn’t even boot the system. For comparison the gpu temp in windows is around 60C and the CPU cores also run cooler…
I think i will just give up, my hardware is incompatible with any linux distribution.

ron
ron
Reply to  finid
11 years ago

after more than 20 reinstallations i have managed to install ATI’s proprietary driver and get the GPU stable at around 66C. I had to switch to ubuntu 12.04 though because 12.10 is just impossible with my hardware.
in 12.04 it was very easy installing the right driver (i found it in “additional drivers” while in 12.10 it wasn’t there).

Garu
Garu
11 years ago

Dear finid,
My ubuntu 12.04 LTS was so slow and sometimes non-responsive. So, I decided to re-install it from the CD. It was a successful re-installation, but I came up with a dual boot option problem. The laptop boots immediately to ubuntu, I am not able to get in to (boot to) windows 7. I installed and run boot repair but still I am not able to get the dual boot option that I had before the re-installation of ubuntu 12.04 LTS. Please have a look in the link below ( the boot information), if in case it helps you to find where ( what) is the problem that I am facing.
http://paste.ubuntu.com/1350363/

Please finid help me, I am really frustrated.

Garu
Garu
Reply to  Garu
11 years ago

Dear Finid,
Thank you for the clear tutorials.
I want to install ubuntu only in my laptop, which has windos 7. So, shall I go for ubuntu 12.04 or 12.10, in terms of stability? Would you please also give me some instructions on how to install ubuntu 12.04 or 12.10 only.
Thank you

Mint
Mint
11 years ago

Hi finid,

I burned an Ubuntu 12.04 AMD 64-bit disk and was presented with the UEFI screen with the choice to install or to run as a LiveCD.

I choose to run as a LiveCD and then I get a blank screen – and that’s the end of it.

Do you have any ideas why?

I previously partitioned using Linux, so that would make the partition non UEFI, assuming I understand correctly. However, I used gParted to delete those partitions and extend the Win7 partition. Then I booted Win7 and followed the Win7 partitioning instructions contained in this tutorial.

Both times – blank screen after 10 minutes.

Again, any help would be appreciated.

TIA…

Mint
Mint
Reply to  finid
11 years ago

Hi finid,

I tried to directly install Ubuntu as you suggested with no luck. I did notice a very brief error message between the boot screen and the Ubuntu selection screen.

It said,

“error: prefix not set”

The DVD doesn’t spin when I try to install Ubuntu. I also tried to check the DVD for errors and nothing happened there, either. The DVD doesn’t spin.

I am using a DVD RW – could that be the problem? Should I burn the iso to a permanent disk?

TIA…

Guilherme da Luz
Guilherme da Luz
Reply to  Mint
11 years ago

I had the same problem with the blank screen. Try to increase the brightness using the buttons of the keyboard of your screen when the blank screen appear. e.g fn+f3 or fn+f4 depending on your model the keys may change

Guilherme da Luz
Guilherme da Luz
11 years ago

Hey finid,
I’ve just installed Ubuntu 12.10 32bits on my pc. I also have windows 7 x64 running on it. when i boot into ubuntu from the windows boot-loader it shows me the GRUB command line and i can’t go any further than this. What can i do?

Guilherme da Luz
Guilherme da Luz
Reply to  finid
11 years ago

problem solved. Thanks anyways

xrark
xrark
Reply to  Guilherme da Luz
11 years ago

how did youu fix that?

Guilherme da Luz
Guilherme da Luz
Reply to  xrark
11 years ago

I installed EasyBCD 2.2 instead of 2.1.2

LinuxNewbie
LinuxNewbie
11 years ago

Hello finid,

Thanks a lot for these extremely useful tutorial. I have a few questions specific to my case:

1. My Windows machine already has 4 primary partitions

/dev/sda1 – SYSTEM, 301MB, NTFS
/dev/sda2 – C:, 39GB, NTFS
unallocated space – 242GB, NTFS
/dev/sda3 – HP_RECOVERY, 15GB, NTFS
/dev/sda4 – HP_TOOLS, 2GB, FAT32

I want to allot 40GB partition space for Ubuntu 12.04, which includes /boot, / and swap. I wish to have a partition of 200GB shared amongst Windows and Ubuntu. How would you suggest me to proceed with the Ubuntu installation?

2. While trying to install Ubuntu from the Live desktop, it asks to un-mount /dev/sda so that the unallocated space can be used for partitioning. Should I go ahead with that?

Thanks in advance!

LinuxNewbie
LinuxNewbie
Reply to  finid
11 years ago

Thanks for quick reply finid!

Actually, I have bought this new machine HP EliteBook 8540w yesterday. The default partitioning had C: with 242GB unallocated space incorporated in it. Since I wish to have a dual boot configuration, I used Easeus Partition Master to shrink the C: to 40GB.

I did not understand what you meant by “Note that even if you reboot, that 242 GB of unallocated space will still be usable, for the reason given earlier.” Could you please explain this again?

Easeus Partition Master allows to move the partitions, so that the unallocated space will be shifted to the end. It also allows to convert the primary partition to logical. But people recommended not to touch these HP partitions at most of the places on Web. But I think I can delete the HP_RECOVERY partition once I have created the recovery discs.

Also, how would you suggest to proceed regarding sharing a common partition of 200GB among Windows and Ubuntu? Should I format /home to NTFS? And not encrypt it?

Regards

Jim Kyle
Reply to  LinuxNewbie
11 years ago

If it’s a brand new HP machine the odds are very great that it uses “gpt” partitioning, which does not have the four-primary limit. If you have a “live CD” you can run a test to tell for sure; the details are at https://help.ubuntu.com/community/UEFI and you should read that page before making any changes. You may be able to install Linux without deleting any existing partition, but there are a few details to deal with along the way…

LinuxNewbie
LinuxNewbie
Reply to  finid
11 years ago

Jim, finid,

Thanks for your replies!

This is indeed an MBR type partitioning. The Ubuntu installer show unallocated space as unusable!

I will delete the HP_RECOVERY partition and then merge that space with the unallocated region. This should free up one slot for a primary partition. Now the only question remains, how to share a partition among Windows 7 and Ubuntu 12.04. Is sharing /home of Ubuntu by making it NTFS with no encryption a good idea?

Regards

Jim Kyle
Reply to  finid
11 years ago

No reply button on the OP’s latest so I’m replying here instead.

Make the 242-GB space an extended partition, then create logical partitions inside it per finid’s outline.

The /home partition must be a Linux type; NTFS won’t work for it. You can create a large NTFS partition for shared stuff, and symlink folders from $HOME to it.

LinuxNewbie
LinuxNewbie
Reply to  finid
11 years ago

Right. I’ve also realized that my system has UEFI firmware. I just had a look at http://www.linuxbsdos.com/2012/10/11/dual-boot-windows-7-and-ubuntu-12-04-on-a-pc-with-uefi-hardware/, where you did not create the /home partition at all. What are the consequences of this? Can I symlink everything to the shared partition as Jim suggested? Or is it recommended to have a small /home partition anyway?

Cheers for all the replies!

LinuxNewbie
LinuxNewbie
Reply to  finid
11 years ago

Everything worked perfectly! Thanks again finid and Jim!!

Dmikun
Dmikun
11 years ago

Hello, thank you for this great guide.

I have a little question:
When I chose ubuntu from the win7 boot menu it load the ubuntu boot menu and I have to chose again, is this normal?
if yes how can I disable the ubuntu boot menu so it load ubuntu automatically after I chose ubuntu in the win7 boot menu.

Kevin
Kevin
11 years ago

Hi there. Thanks for putting this up. I followed your instructions here, and when I go to boot Ubuntu from the windows bootloader, I just get the grub command line. I tried to load linux from there (trying each one of the linux partitions, just in case), but nothing worked. Any idea what I might have done wrong? Thanks

Kevin
Kevin
Reply to  finid
11 years ago

I had tried it several times with several different partitioning schemes on a single 1tb hdd. In the end, I used boot-repair (https://help.ubuntu.com/community/Boot-Repair), and that did the trick. It boots to GRUB rather than the Windows bootloader, so I’ll probably have headaches if I want to upgrade Windows, but my primary goal was to just get a working dual-boot scheme, so I’m content.

Wolf
Wolf
11 years ago

Great walkthrough, clean and direct.

May I could ask you a quick question, just to be safe?

I want to install Ubuntu 12.04 on a pc with Win 7. However, Win 7 was installed over a previous Win XP (dumb me), and there’s no Windows boot partition. Should that result in any problems?

Since I was planning to do this when I had the time, I had previously left the partitions ready for Ubuntu before installing Win 7. So the partition table is actually:

sda1: 40,0 GB – ntfs (Windows 7 system AND boot)
sda2: 500 MB – ext4 (empty, ready for GRUB)
sda3: 40,0 GB – ext4 (empty, ready for Ubuntu /root)
sda5 (logical): 2,0 GB – swap (empty…)
sda6: 300 – ntfs (Data partition)

I am hoping I can proceed installing ubuntu with you method without worry.

Thanks a bunch!

Wolf
Wolf
Reply to  finid
11 years ago

GB. Typo. Thanks a lot!

manish singh
manish singh
11 years ago

hello sir,

as per ur guide I changed the partition size in /dev/sda2. But the free space that was to be used to create partitions is listed as “unusable” and am not able to create any more partitions(the “add” option is inactive). Moreover i can’t even revert my action and the free space is of about 13.8GB.

please help

manish singh
manish singh
Reply to  finid
11 years ago

thank u sir,

helped me a lot…!!! thnx a lot….

🙂

Sudeepto Dutta
Sudeepto Dutta
11 years ago

Hello Sir,

I am about to install UBUNTU 12.10 64 bit on my PC having windows 7 32 bit already installed ….

Since I have 3 partitions made on windows 7 already

So according to your post I shouldn’t have sda5 as my boot menu , instead of that it should be sda6 right ??

Or any partition with /boot written on it right ..??

Now my 2nd question… I have 165 unallocated space for UBUNTU …

How should I divide my space if I plane to install many apps and will of course be updating regularly ??

PLease sir reply ASAP ..

Thank YOu

jo
jo
11 years ago

Hello,
thank you for this great (!) step by step instruction. One of the best I have ever seen.
Yet I have a question: I want to use an extra data partition.
My (only) hard disk is 285 GB, I imagined to partion it way like this:
30 GB Win7 NTFS; 220 data NTFS when installing Win7 and the rest being done by the ubuntu installer. Would this work?
And do I still need the home-partition? Because I want to save all my data on the data-partition.
I know I can access the windows-data out of ubuntu and also write there. But would it have the same speed?
Crap, my English is bad, I hope, you still get what I mean.
Thanks in advance for your help and again my appriciation for this great work.

jo

tHe_VaGaBonD
tHe_VaGaBonD
11 years ago

i guess root(Mount Point: /) should be Primary Partition and not Logical .

safa
safa
11 years ago

i follow your step and i install Ubuntu and use easyBCD but when i boot Ubuntu 12.04 i get a message
GRUP4DOS 0.4.5c and a ( grub> ) command what to do and what is this message ???
thanks

KLund1
KLund1
11 years ago

Excellent tutorial on the dual boot.

Odd request:
I would like to quad boot unbantu 12 with XP, Vista, and Win 7. What would be the correct order of OS installs. I have win7 currently on an SSD. I have a empty 300Gb HD where I would like to put XP, Vista, and Unbanu, and a 2nd win7 install. I have a 3rd HD for Data only. I have a drive back image of Win7 from the SSD.

Your knowledgeable input would greatly appreciated.
Thanks 🙂

Rich
Rich
11 years ago

I am attempting to install on a Lenovo ultrabook with Windows 7 pre-installed–booting from a CD on external reader.

The install process SKIPPED the screen where it says you already have Windows 7 installed, where you tell it you want “Something else.” It went directly to the next screen, on which NO partitions were shown–implying it does not know Windows 7 is already there.

I aborted the install, and booted back into Win 7. What is going on here?

Thanks.

Rich
Rich
Reply to  finid
11 years ago

Tried it a few times now, same results.

Noticed that the “Device for boot loader installation is “/dev/sdb” (no other info), NOT /dev/sda, and I can’t change it.

Further info:

I got into disk management in Windows 7. It shows two “disks”: Disk0 and Disk1.

Disk0 is 8.0 GB and is described as a “Hibernation partition.”

Disk1 has four partitions:

1. “SYSTEM_DRV”, 200MB, NTFS, “System, Active, Primary Partition”
2. ” Windows7_OS (C)”, 402GB, NTFS, “Boot, Page File, Crash Dump, Primary Partition”
3. “LENOVO (D)”, 25GB, NTFS, “Primary Partition”
4, (unnamed), 19.34GB, “OEM Partition”

Rich
Rich
Reply to  finid
11 years ago

Further info:

I posted this same question on Ubuntu forums, and received the following reply:

In this type of setup, usually both disks are set up in sort of a raid. I guess that’s why it wasn’t detected properly.

On top of that, it seems Disk1 already has the maximum 4 primary partitions created, so you can’t create any more partitions.

You can create a set of recovery DVDs from the recovery software, after which you don’t need partition #4 and can delete it and use that space.

But in any case you need to consider whether you will break the “connection” between the disks or not. From cases reported here, it seems you will not be able to install unless you break them up. But it might be different with your machine.

(end of Ubuntu Forum reply)

I do remember when I booted into the Ubuntu install disk, the disk descriptions included the word “RAID.”

The part of the Ubuntu forum reply about “breaking the connection” between the disks is completely outside my experience and knowledge, and makes me quite hesitant to proceed.

Can you shed any light on this? Thanks.

Rich
Rich
Reply to  finid
11 years ago

Further info from Ubuntu forums:

(Begin Ubuntu forum quote)

It seems this kind of setup is something called Intel Rapid Storage Technology, where they use the small SSD as a fast storage/hibernation disk. People with this setup have said that they couldn’t manage to install the dual boot until they deactivated IRST in windows first, then in BIOS changed sata mode from RAID to AHCI, and then removed the meta data from the disks using the dmraid commands.

From what has been mentioned, windows will keep on working, the procedure doesn’t mess up windows. But the way it works might be little different, not using this fast storage. And on your machine it might create problems, or not. I can’t really say 100% so I can’t tell you to do this or that.
I only mentioned what I have seen here.

See first if this is IRST on your machine and then do some google research about the dual boot on these machines. If you like what you read, go for it. If not, sorry, it seems you have no options but to return the machine.

(End of Ubuntu forum quote)

So, I am now considering just returning the machine. Do you have any suggestion that might allow me to keep this laptop and use it for both Ubuntu and Windows?

Thanks very much.

Rich
Rich
Reply to  finid
11 years ago

Finally, if I do have to take this PC back and get a different one, what can I look at on the PC in the store BEFORE I buy it, that will tell me it has what I need to be able to dual boot Windows and Ubuntu?

Thanks very much.

Rich
Rich
Reply to  finid
11 years ago

Well…I went into the BIOS. I can’t tell what to do.

It does have two disks, 500GB and 32GB.

In the configuration section it says SATA controller working mode is “RAID”.

I have no idea how one would decouple the disks, and wondering through the BIOS has given me no clue. I had probably better just take it back to the store. Thanks.

Rich
Rich
Reply to  finid
11 years ago

Thank you, finid.

I changed the mode to AHCI. It made no difference to the Ubuntu install–although maybe you weren’t expecting it to (because you mentioned I still have to decide what to do with the SSD).

But Windows would no longer boot. I eventually put the storage mode back to RAID, and at least now I can boot Windows.

Thanks.

Rich
Rich
Reply to  finid
11 years ago

Another question–sorry to keep bothering you.

Do you know if this storage configuration would allow me to successfully install Ubuntu 12.04 IN PLACE OF Windows 7, after which I could run Windows 7 within VirtualBox.

I know this is off the subject of dual-booting, but it would solve my problem if it worked–I only need Windows so that I can run MS Office. I guess I would have to buy Windows, since I don’t know if I can make a copy of the pre-installed Windows and install it under VirtualBox.

I am asking this because I don’t want to attempt to install Ubuntu, wiping out Windows, and then find Ubuntu doesn’t work and Windows is gone too.

Thanks very much.

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