Windows 8 and 8.1 Forums


setup was unable to use the existing system partition...

  1. #1


    Posts : 6
    Windows 7

    setup was unable to use the existing system partition...


    Because it does not contain enough free space. Clearly I have enough free space...
    http://i.imgur.com/IMEgWwG.jpg
    What should I do? I want to do a dual boot, so I can keep Windows 7 in case I don't like 8.1...
    edit: I formatted and deleted that partition and I tried again with 201gb, and no luck. : (
    http://i.imgur.com/5T5vLvD.png

      My System SpecsSystem Spec

  2. #2


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    As the partition is Logical, you have no Primary partition free space.
      My System SpecsSystem Spec

  3. #3


    Posts : 1,121
    Windows 8.1 x64


    The System Partition is the 100 MB one at the front of the drive. A Windows 8 install will normally make a 350 MB partition for the boot files and the Recovery System. I do not know why it isn't putting the Recovery files in the new partition, but it appears it is not. Possibly because it is a logical partition.

    A normal system has quite a bit of free space, but yours is showing as having 0 MB free. Do you remember what it was before you started the Windows 8 install? Have you put anything in there yourself?
      My System SpecsSystem Spec

  4. #4


    Posts : 6
    Windows 7


    Quote Originally Posted by Saltgrass View Post
    The System Partition is the 100 MB one at the front of the drive. A Windows 8 install will normally make a 350 MB partition for the boot files and the Recovery System. I do not know why it isn't putting the Recovery files in the new partition, but it appears it is not. Possibly because it is a logical partition.

    A normal system has quite a bit of free space, but yours is showing as having 0 MB free. Do you remember what it was before you started the Windows 8 install? Have you put anything in there yourself?
    I don't remember. : (
    I am using Windows 7 right now, but I recently installed Windows XP on a dual boot for old nostalgia's sake. I uninstalled it, but it still shows up on my boot screen as an option (it doesn't load though), could that be taking up the space?
      My System SpecsSystem Spec

  5. #5


    Posts : 1,121
    Windows 8.1 x64


    From what I can tell, the System Reserved partition in Windows 7 should only use around 76 MB of space out of the 100 MB. If yours has more, something else is in there, possibly the XP stuff.

    Did you use any special software to set up the XP dual Boot? You might check msconfig.exe and see if you can remove the boot entry from the system. But you still might have other files left over, such as ntldr, it the system was set up that way.

    Since I do not know if using a logical partition to install Windows 8 has any effect on where it puts it Recovery files, I suppose I would start with putting a Drive Letter on the System Reserved Partition and finding out what is in there. A list of what I show is a the bottom for comparison. You might also think about changing the partition to primary, just in case it does effect the install regarding the placement of the Recovery files.

    If you have any questions, post back so we can check the situation.

    To assign a drive letter (there is probably a tutorial here somewhere), you start the Administrative command prompt and type Diskpart. After that you can check the partitions to see which one you want to assign the letter to. So follow the commands below and make sure you are looking at the correct 100 MB partition. This assumes you have one hard drive which would be disk 0 and partition 2 is the partition you need. If you have another drive, make sure and select the correct drive and partition.

    list disk
    select disk 0
    list partition
    select partition 2
    assign letter="S"
    exit


    Now use DOS commands to check the partition. A dir /a command will show the hidden files and you should be able to see what is actually there and remove any unwanted files/folders.

    When you are done, open Diskpart again, go through the same set of commands and use remove letter="S" to get rid of that mount point.

    C:\WINDOWS\system32>S:

    S:\>dir /a
    Volume in drive S is System Reserved
    Volume Serial Number is 48C5-65FA

    Directory of S:\

    10/19/2013 09:09 AM <DIR> $RECYCLE.BIN
    04/12/2011 10:11 PM <DIR> Boot
    11/20/2010 07:40 AM 383,786 bootmgr
    04/08/2010 05:57 PM 8,192 BOOTSECT.BAK
    07/23/2013 01:02 PM <DIR> System Volume Information
    2 File(s) 391,978 bytes
    3 Dir(s) 22,446,080 bytes free
    If the folders listed are not exactly correct, such as Recycle bin, it might be because I have the Windows 7 drive in an external dock.
      My System SpecsSystem Spec

  6. #6


    Manchester, UK
    Posts : 113
    OS X / Windows 8.1 Pro / Ubuntu 13.10


    I'm not sure what's happened but you seem to have 2 x 100MB partitions. I suspected your later installation of Windows created a second one for some reason (maybe the first didn't have enough space?). Normally Windows will store some boot files in it.

    One of your problems (if you're on MBR partitioning, rather than GPT) is that you are now at the 4 partition limit imposed by MBR partitioning scheme. I presume that's why your last partition has been created as logical rather than primary - otherwise you would have exceeded the 4 partition maximum - which would have been worse!
      My System SpecsSystem Spec

  7. #7


    Posts : 6
    Windows 7


    Thanks, saltgrass. I followed your post and was led to this in my system reserved partition
    http://i.imgur.com/3Luitou.png
    I am afraid of deleting anything...
      My System SpecsSystem Spec

setup was unable to use the existing system partition...
Related Threads
I can only run apps when NOT connected to the internet. Only pre installed apps becauce I can't download new ones. When connected to the internet I can use a browser, use email and go to the apps store. If I try to run any apps they try to open up and then I get the message "Can't log into...
Hello all, I have a new Asus X102BA it has modest performance so as I have a spare OCZ 120GB ssd I thought I would see if it could be improved. I have tried to install win 8 Pro using a powered DVD drive but I get the message in my title. The primary partition is shown on screen and I have nothing...
Hi, I installed Ubuntu 12.04 on my laptop (Acer Aspire 5738Z). It has a simple SATA HDD. Ubuntu installed fine and I did not like it. So I decided to remove it completely and install Windows 8 (I have genuine). I made a bootable ISO USB of Windows 8 and booted from it. The setup started and...
Hello, I am unable to move my boot data to another partition. Please have a look at the following picture-: 29641 As you can see I have created a separate a partition before my C drive and formatted it. I have used the following command to copy the boot data from my C drive to the...
I got error when trying to install windows 8 consumer preview "setup was unable to use the existing partition because it does not contain the required free space. "I am trying to install on a separate partition, size is 100 GB. the drive is 1 drive separated into 2 partition. installation could...
Hi. Just recently I went from windows 7 up to win8 and it was all fine and dandy. Yesterday however I got a "No boot manager found" error on start up. I had nothing of importance on the C drive so I went to do a full reinstall of win8 and I got a error "Setup was unable to create a new system...
Setup was unable to use the existing partition because it does not contain the required free space. I've tried installing Windows 8 onto two different hard drives. With the first one I tried using a 30gb partition, formatted and unallocated. I still got the same error. A few times when I tried...
Eight Forums Android App Eight Forums IOS App Follow us on Facebook