Problem with VDI Size

Discussions related to using VirtualBox on Windows hosts.
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Rysel
Posts: 1
Joined: 12. Jan 2009, 23:27

Problem with VDI Size

Post by Rysel »

I'm trying to install Windows 7 Beta guest right now, on Win XP Host

If I choose "dynamic size" for my VDI and put it in my D:\ partition (where I have 40 GB free) everything works fine until about ~85 % into the installation Virtual Box stops and tells me following error

Image

the size of the VDI file is 3,99 Gb at that moment.

If I choose "fixed size" for the VDI (like 15 GB) I cannot create it all (following error) although I have more than enough free disk space.

Image

(I could only create a fixed VDI file smallen than 4 GB)

Does anyone have an explanation?
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Sasquatch
Volunteer
Posts: 17798
Joined: 17. Mar 2008, 13:41
Primary OS: Debian other
VBox Version: VirtualBox+Oracle ExtPack
Guest OSses: Windows XP, Windows 7, Linux
Location: /dev/random

Post by Sasquatch »

Explanation: you have a drive formatted as FAT32. That has a 4 GB file limit. Reformat or convert it to NTFS.
Read the Forum Posting Guide before opening a topic.
VirtualBox FAQ: Check this before asking questions.
Online User Manual: A must read if you want to know what we're talking about.
Howto: Install Linux Guest Additions
Howto: Use Shared Folders on Linux Guest
See the Tutorials and FAQ section at the top of the Forum for more guides.
Try searching the forums first with Google and add the site filter for this forum.
E.g. install guest additions site:forums.virtualbox.org

Retired from this Forum since OSSO introduction.
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Entegy
Posts: 160
Joined: 6. Sep 2008, 23:59
Primary OS: MS Windows 7
VBox Version: VirtualBox+Oracle ExtPack
Guest OSses: Ubuntu 10.04 x64, XP SP3, Server 2008 R2, Fedora 13 x86/x64
Location: Montreal, Quebec, Canada

Post by Entegy »

Yup, your drive is formatted as FAT32. FAT32 drives have a limit where no single file can be bigger than 4GB. Here are some instructions from Microsoft to convert your drive to NTFS: http://support.microsoft.com/default.aspx/kb/307881

I cannot stress enough to BACKUP EVERYTHING IMPORTANT before doing this.

Once your drive is in NTFS format, the 4GB limit will be lifted. Make a dynamic VDI with 15GB. Once you get Windows 7 installed, please remember Share Folders do not work with 7 yet
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