This gives you the best possible starting point for building images which will require additional drivers. If you just want to 'test' Windows 7, use the Heidoc tool to download the August 2018 version. In the context of a virtual machine therefore, the choice of IDE puts the virtual machine into the "lowest common denominator" of hard disk configurations and does not require any additional hard disk drivers to be present. If you obtain a legitimate Windows 7 DVD or ISO file (e.g., by using the 'Microsoft Windows and Office ISO Download Tool' from ), you will not be able to activate it without a retail license (see reply above from Bill Smithers). Most SCSI controller cards included their own bios chip to extend the motherboard bios, and since controller bioses are initialised after the system bios, it allowed them to "hook" the hardware interrupt (Int13) used by the hard disk system and take over the handling of read and write requests. Consequently, all versions of Windows ever released also support IDE natively, as this is the lowest common denominator of hard drives.Ĭonversely, SCSI has always needed additional firmware and software support to work in the PC environment. Of course there have been some enhancements to support the ever increasing size of hard disks, but basically, all IBM compatible machines in the last 25+ years have worked to the "IDE" spec. Step 2 If the VirtualBox Additions installation wizard does not open automatically, open My Computer and view the contents of the setup file, and double-click VBoxWindowsAdditions-amd64 to start the installation. With the arrival of Serial ATA back in 2003, the ATA interface was retroactively named Parallel ATA, hence we now have SATA and PATA.įrom a BIOS perspective, going right back to the original IBM PC, the way that the bios talks to hard drives has remained virtually unchanged, as the IDE drives mimicked the task file architecture of the original MFM+Controller hard disk setup. To install Guest Additions on Windows 10, click Devices / Insert Guest Additions CD Image from the Oracle menu. So the terms IDE and ATA have been used interchangeably over the years as they are essentially the same thing. As with all good ideas, it was used as the basis of a "standard" known as the AT Attachment or ATA interface. SCSI had been doing this for a while already, but was considered too expensive for standard desktop machines, so IDE was developed by Western Digital to address that market. Prior to that, the older MFM RLL and ESDI disk interfaces relied on an external controller to handle head cylinder and sector addressing, and also to decode the amplified analog signals received from the heads. The caveat is the image is only good for a limited time. IDE stands for Integrated Drive Electronics, and was used to describe hard disks with the controller integrated into the drive, rather than being a separate card plugged into the motherboard. For the past several years, Microsoft provides legal free Windows virtual machine image downloads.
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