View Full Version : DUAL BOOT unable to install

12-12-2012, 10:03 PM
been trying to upgrade to windows 8 from windows 7.....no joy at all
been getting the following problem during usb installation "Windows cannot be installed to this hard disk space. This partition contains one or more dynamic volumes that are not supported for installation"
Been googling about it for two days with no help at all...either the advice wont work...or i dont get the technical jargon
posting a screenshot of diskmgmt.msc .
Please help me!!

12-12-2012, 10:22 PM
parth, Welcome to the Forum!

Do you need all of those partitions listed there? And is there Data on all of them? If so, you can drag & drop from one partition to the other. That's too many partitions for a OS install drive (or too many of the wrong type).

If you want a Data partition, only 3 primaries are allowed. The System (the 100MB) partition counts as one, then your Windows 7, then Windows 8. That's 3 primaries. Those last three on the scale needs to be converted into logical partitions.

If you have further questions, feel free to post back.


12-13-2012, 08:20 AM
i have only three partitions....the e drive seems to be split into 4 parts....how do i resovle that?? backing up data wont be an issue...

12-13-2012, 08:41 PM
What is this with 4 partitions having the same drive letter? I've never seen this before, perhaps you can enlighten us on this. That is the issue keeping you from installing Windows 8.

Those last three partitions, whatever Data is on them first needs to be backed up. Then delete them, & with a partitioning tool such as Mini Tool Partition Wizard Home Edition, here:

Best Free Partition Manager Freeware and free partition magic for Windows 7, Windows 8, Windows Vista and Windows XP 32 bit & 64 bit. MiniTool Free Partition Manager Software Home Edition. (http://www.partitionwizard.com/free-partition-manager.html)

Note there's also a Bootable CD & Flash drive alternative to this on the left of the page, if you don't wish to install the app. Once you delete those partitions, you need to make that remaining "E" partition (where Windows 8 will go), a primary partition. The tools are in the app to do this.

One other thing of interest here, you don't seem to have a common type of setup here. I've read of dynamic disks, but haven't messed with them. On what appears to be a 500GB HDD, all of this isn't needed. It should be corrected before Windows 8 is installed, rather than after, that is, unless you know of something that most of don't. Evidently, something's not right, or Windows 8 would install.

How were these dynamic disks created? Even your Windows 7 install is the same. Do you have another HDD, as in a server, or RAID-5 installed?

Basic and Dynamic Disks (Windows) (http://msdn.microsoft.com/en-us/library/windows/desktop/aa363785%28v=vs.85%29.aspx)

Having a basic partitioning table for your OS install HDD's is the simplest & best way to go. If you want to play with mirroring or RAID-5, it needs to be done on a totally separate HDD. This isn't typically done with 500GB HDD's, many who are doing this have 2 to 3TB (sometimes 4TB) HDD's.

There's a chance that Windows 7 may have to be reinstalled if this can't be undone. Not having worked with this type of scheme, & don't care to, as I have no need for it, along with most users, I prefer to keep it simple. This is just new to me.

Please return & explain what you have done, & why. If you're trying to do something advanced, don't do it on your OS drive(s), users who are into this RAID & other advanced functions are properly setup for it. I know that one can do a lot more with dynamic disks, but have zero experience with these functions.

The post that I created last night, I hadn't realized what had happened, nor did I catch that they were dynamic.


Hopefully, someone other than myself who knows about this type of setup will step forward with suggestions.

12-13-2012, 10:53 PM
someone had told me that i needed less partitions in order to install windows 8....so i deleted the rest of the volumes and expanded e drive....but instead of expanding this is what happened.
Now when u say that i backup all the data of e drive....what exactly do i do in the partition tool....should i delete all of them and crate a new volume from the unallocated space??just asking if there is a chance it might work else it will be just a big waste of time
and thanks for the help cat! appreciate it

12-14-2012, 09:53 PM
Yes, if you've backed up whatever you have in those partitions, delete them with the partitioning tool & create a new one for Windows 8 (primary partition). An amount equal to what you have for Windows 7 should be fine, for years to come. That's going to give you the max of 3 primaries.

Then, you can create a Data partition of whatever size that you wish, using the partitioning tool that I linked above. Leave the built in Windows Disk Management tool alone, you've been given incorrect advice on using it. There was no need to "expand" E drive, it's already the same size as your "C" partition.

Before you do anything else, what's on the first "E" partition? If you have Windows 8 RP installed there now, you can use the Upgrade Assistant from that partition to install Windows 8 Pro. Note, & please do, go all the way through the steps offered, it'll ask you if you want to save to desktop, decline & keep going to the point of where you can create an ISO to make a bootable DVD or Flash drive installer, select DVD. It'll create an ISO that you can use with either choice, & be sure to save that ISO file for future needs. I stored mine on an external drive. In other words, copy that file to another safe place before you work with it.

Whatever you do, if Windows 8 RP is already installed, DO NOT format that partition, until you're in the install process. Use your Windows 8 install DVD to format the partition while installing the new OS. If you delete it, you won't get to dual boot.

I hope that you did pause the process, or have you paid yet & have the ISO (made into a DVD) already? You're supposed to be able to pause/resume at any time until it's fully complete.

I also hope that you've fixed the "dynamic" drive that you have back into a regular one. Hopefully the deletion of these extra partitions will do the job.