With VirtualBox, it's possible to emulate many types of hard drives and make them appear as conventional hard drives or SSDs if you wish.
To begin, VirtualBox obviously supports SATA connectivity that allows the use of hard drives and CD/DVD drives that can be used under Windows Vista, 7, 8, 8.1 and 10 for example.
As you can see, by default, the type of SATA controller used is AHCI because it offers better performance than the IDE.
Note that, as explained in the VirtualBox manual, the "Use host I/O cache" option can significantly increase the performance of your virtual machine (due to delayed or asynchronous write), but that it's disabled by default for security reasons.
In particular, to avoid data loss.
As you can see next to "Controller: SATA", it's possible to add CD/DVD drives and virtual SATA hard disks.
To add a virtual SATA hard disk, click the icon on the right and click : Create a new disk.
Choose the type of hard drive you want.
Note : to use other virtual hard disk formats, click on "Expert Mode" at the bottom.
For each virtual SATA hard disk, you will be able to :
Note that the number of available SATA ports increases depending on the number of SATA devices that you add to your virtual machine.
To add a SATA CD/DVD drive, click the left-side icon (representing a small disc), and then click : Choose a disk.
For example, the iso file of Windows 7.
For SATA CD/DVD drives, you can enable the options :
If you want to install Windows XP or Windows Server 2003, you will need an IDE controller because SATA is not supported by default by this OS.
In short, to add an IDE controller, click on the + icon at the bottom and click on : Add IDE Controller.
Now we have a SATA controller and an IDE controller.
To add an IDE hard drive, the principle is the same.
Click the small hard disk icon (to the right of : IDE Controller), and then click : Create a new disk.
If you have already mounted an old computer, you probably know that the hard drives had to be connected respecting a system of master and slave.
Just for info, it was done through jumpers.
These are small white plastic blocks that had to be plugged in according to :
As you may have understood, you can connect up to 4 IDE hard drives.
For their position, you can connect them (in order) by :
As with the SATA controller, you can also add a CD/DVD drive.
But this time, it will be IDE.
For the CD/DVD drive, you must also respect the master / slave system.
For those who do not know the SCSI, it's a connector type used mainly in professional servers.
In fact, SCSI hard drives cost more, but they are also more reliable and perform better than conventional hard drives that you use in your home computer.
Currently, VirtualBox supports 2 types of SCSI controllers : Lsilogic and BusLogic.
For SCSI hard drives, they will be recognized by the operating system by different SCSI port numbers.
Same for SCSI CD/DVD drives.
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