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I won´t to creat 4 virtual disks but when I run the Virtual machine I have only the c:.
I need to know what is happening and what I do to resolve the problem.

I take it that "I won´t to creat" means "I want to create".

- You don't mention your host.
- You don't mention your guest (I assume it's Windows, don't know which one).
- You don't mention what you did to expect 4 disks.
- Did you partition the disk during setup or did you add 4 virtual disks?
- Why do you need 4 disks, if you don't mind me asking?

Answer the above, and we start from there...

I have installed Windows 7 (32-bit) and I buil a machine with the same Windows 7. I has experience to build 4 disk to know how to do. I have 2Gb of memory in the computer in the total and a processor Intel(R) Core(TM)2 CPU 6320 @1,86GHz 1.86Ghz. I have small amount of memory to work whit two windows 7 in this same computer, but I have a disk of 1Tb whit 4 partitions and I know that is possible to do 4096 of disk to the virtual men but no more. Because this I give 2048-4096Mb in c: e more two partitions become whit 6144-12288Mb of virtual memory and I want to do the same in the Virtual Machine.

It's a little difficult to understand your English, so, let me see if I understood part of your reply:

• Guest: Windows 7.
• Host: Windows 7, 2GB RAM, 1TB of hard drive, 4 partitions.
• You can allocate 4096 on your host. Do you mean MB in your hard drive?

After that, I lost it. Could you get some help from Google Translate? Or a friend? I do it all the time. Keep your sentences short. It helps...

• Guest: Windows 7.
• Host: Windows 7, 2GB RAM, 1TB of hard drive, 4 partitions.
• Host: Processor Intel(R) Core(TM)2 CPU 6320 @1,86GHz 1.86Ghz.
• I can allocate 4096 Mb in all my disk partitions.
• I have 2 disks, 1 the 160 Gb whit 2 partitions of 74,5 and another 1 TB whit 4 partitions of 232 Gb.
• I can allocate 4096 Mb x 6 (number of disks and partitions).
• I allocate 2048-4096 Mb x 3 and my final virtual mem is 6144-12288 Mb.
• I want to do 4 virtual disks in my guest.
• I want allocate 2048-4096 Mb x 3 (in 3 virtual disks)

As far a I can tell, there are at least two different problems here. The first is that the OP is confusing RAM and disk storage. The second is that the OP is confusing MB and GB.

With the host only having 2GB of RAM, you will struggle to get 3 guest boxes to work.
Can you add more RAM to your host ?

Lukifarol, it sounds like you want to use the host's virtual memory on your host's disks as extra memory for your guest to use. Virtualbox will not allow that. You may only use a portion of the 2GB of real memory your PC has for the guest's memory. You need to get more memory for your host PC.

The virtual disks you put in a guest are not your host PC's hard drive partitions. They are really files residing on your host hard drives. You can have 4 virtual disks in your guest on only one partition on one physical drive in your host PC if you want to.

To add disks to a guest you make new disk files in the guest's Storage Settings section in the Virtualbox window. You can change the guest's virtual memory settings in the guest OS if you want. You can also partition the guest's virtual drive file if you want, using the guest's partitioning utility.

Two Windows 7 operating systems running on 2 GB of memory will not run well, and adding virtual memory to the guests won't improve their performance much. You need more physical real memory in the PC.

My problem is that I create 4 virtual disks. In the machine only appears c: the others don’t appear.

socratis wrote:- You don't mention what you did to expect 4 disks.

I thought I asked you that already. I never got an answer that I could understand. Again, because we seem to have a language problem, please either seek some help from an English-speaking friend or use Google Translate.

My problem is that I create 4 virtual disks. In the machine only appears c: the others don’t appear.

Windows needs to be told to use the new disks. Open "Disk Management" in the guest and initialize & format your new disks.

Can I show photos to explain what I wan’t.

You can post pictures, using the "Upload Attachment" tab below the box where you type a new post.

If my suggestion to use "Disk Management" does not make the new disks appear, then please do this:

In the guest's folder on the host PC you will find a .vbox file. Right-click it and choose "Send To", then "Compressed (zipped) folder". A .zip file with the same name as the .vbox file will appear. Attach the .zip file to your post with "Upload Attachment". This file will tell us if you really have 4 extra disks in your guest.

Where I find This “Disk Management”?