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install windows 8 on a computer previous running opensuse 11.2

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  • Windows 8
Last response: in Windows 8
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October 10, 2013 5:55:53 AM

hello,
i was trying to install windows 8 on a computer which was previously running linux opensuse 11.2 and failed. i got an error saying "Windows cannot be installed to this disk. The selected disk has an MBR partition table. On EFI systems, Windows can only be installed GPT disks." what do i do..?
i also left out the reserved system partition. Do i still need that partition or i can format it.??

More about : install windows computer previous running opensuse

October 10, 2013 6:08:42 AM

Not much info, do you want them side by side or replace it? Anyway, you can't change partition table without losing data and on the fly.
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October 10, 2013 6:44:10 AM

The "System Reserve" partition is not your culprit, windows will add that in afterwards on the dedicated space you offered to Windows 8. The drive you have (entire hard drive) is configured as a MBR (Master Boot Record) drive, this defines how windows maps out your drive usage and thus defines what files you have. Windows 8 wants (demands) that you change over to GPT (GUID Partition Table) before it can install.

Doing this will destroy your ability to access your current data.

Anything you do not have backed up will be erased. BACKUP ALL IMPORTANT FILES; ANYTHING YOU WANT TO KEEP. It will also mean your OpenSuse installation will be erased (assuming it isn't already), you will have to reinstall from scratch. Again, BACKUP ALL IMPORTANT FILES; ANYTHING YOU WANT TO KEEP.

From here, if you want to install Windows you will need to convert your disk to use GPT.
Well written instructions can be found here: http://www.thewindowsclub.com/convert-mbr-to-gpt-disk
The last option may be the one you are most comfortable with. Though all, should work.

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a b * Windows 8
October 10, 2013 2:20:58 PM

Windows 8 requires the use of a GPT configured disk when installed on a system with a UEFI based system firmware. In order to install to this disk, it will need to be converted from MBR to GPT or cleaned and reinitialized as GPT. More information on the way Windows 8 works with BIOS/UEFI and MBR/GPT can be found here on TechNet.

Converting from MBR to GPT or cleaning the disk and initializing it as GPT can be performed from a Command Prompt directly off the Windows installation media. In either case, data on the drive will be lost, as c3h8 mentioned. You will need to back up any data you would like to retain before performing these steps. Boot to your Windows 8 installation media, confirm your language options, then select Repair your computer rather than Install Now. Select Troubleshooting, then Advanced Options, then Command Prompt. At the Command Prompt use the following commands to clean the disk and convert to GPT. The command list disk lists all detected storage devices in the system along with a disk number by which they are identified. Select disk selects the disk to be cleaned by the identifying disk number. These and all other commands of DiskPart are detailed here on TechNet.

  1. diskpart
  2. list disk
  3. select disk #
  4. clean
  5. convert gpt
  6. exit
  7. exit

This will clean the existing state of the drive, then convert the drive to GPT, then exit DiskPart and the Command Prompt. Restart the system and complete Windows Setup as normal.
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October 10, 2013 2:29:57 PM

@WinOutreach2

I) It's nice to see MS Representative out in the community.

II) Would you mind providing a more detailed outline of working with diskpart?
The disk identification and selection process can without prior experience can be daunting; creating the partition table, then creating the partition, and formating the partition are relatively simple for DOS/CMD-Line application, but making the partition active has been a past difficulty.
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a b * Windows 8
October 10, 2013 5:07:26 PM

There is no reason why creating the partitions with DiskPart is necessary. The process I recommend merely empties the disk and sets it to GPT. The rest of the partitioning process is done by Windows Setup in the standard way. To be honest, you really only need to clean the disk, Windows will partition the disk to GPT automatically if it is clean (uninitialized).

If you want to be a little more involved in the process, DiskPart can still be used to fully configure the disk. I would urge you to read through the TechNet article Configure UEFI/GPT-Based Hard Drive Partitions which includes scripts utilizing DiskPart and explains what partitions are required, scripts found here. The article also covers configuration of a Windows Recovery Environment partition and a partition for a Recovery Image.

The command to set a selected partition to active is simply active. Again, this is set by Windows Setup automatically, but it can be exceedingly useful when creating bootable media. For example, you can use DiskPart to create a partition and set it to be active on a USB stick, and then copy the files of Windows installation media to it to create a native USB based installation stick. One major advantage over the Windows 7 USB/DVD Download Tool this process has is that it preserves the native boot files, which in the case of Windows 8 installation media facilitates USB 3.0 support.

For disk selection and identification, see my edits to my previous post.
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October 11, 2013 4:30:20 AM

i would like to make a dual-boot of windows 8 and ubuntu.

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October 11, 2013 4:36:29 AM

@ Winoutreach and @ c3h8. Thanks a lot for your contribution. i am going to try out these ideas and get back to you guys. The other thing is, how much space should be allocated to ubuntu..??
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October 11, 2013 7:27:12 AM

Depends on how heavy your use will be. 15GB is fine if you just want to play around, 30GB would be more reasonable if you intend to have more heavy use. Though the real trick is to setup a data partition, in addition to your Windows and Ubuntu partitions. Leave windows enough room for programs, and then make a separate partition for your important files (pictures, music, documents, videos, etc.).

In having that separate partition you can format it as Fat32/exFAT (exFAT recommended) and access it with minimal difficulty from either OS (Ubuntu will need you to install the exFAT libraries, fairly simple).

What's the total size of you hard drive?
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a b * Windows 8
October 11, 2013 8:04:31 AM

You will also want to consider your use of the second operating system to determine whether or not a multiboot environment is better suited to your needs than virtualization through Client Hyper-V. If you have Windows 8 Professional or Enterprise, Client Hyper-V is usually the way to go. It is particularly useful for developers or support roles where switching between environments in a multiboot scenario is time consuming and an inefficient use of resources. With Client Hyper-V, you get full Type 1 virtualization with direct access of system resources for the virtual environments which means very little performance loss. As a virtual solution, you can pop Ubuntu open in a window and do what needs to be done without losing access to your Windows applications for the time you spend in the alternate environment. There is a very good video on Client Hyper-V and Why It Matters available here as a part of Reimagining Windows: An In Depth Look at Windows 8 for the Enterprise on Channel 9.
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