- #CHANGING SERIAL NUMBER WINDOWS XP INSTALL#
- #CHANGING SERIAL NUMBER WINDOWS XP DRIVERS#
- #CHANGING SERIAL NUMBER WINDOWS XP PRO#
- #CHANGING SERIAL NUMBER WINDOWS XP CODE#
In this situation, Windows may present the second hard disk as Disk 0 when you are prompted for the disk on which to install the operating system. For example, assume that you run Windows or Windows Server Setup on a computer that has two unformatted SATA or RAID hard disks. Therefore, the disk assignment numbers may change between startups. SATA controllers have a different behavior and do not experience this same side effect.ĭevices are presented in the order in which they are enumerated. This has the effect of providing an apparently consistent enumeration order, but it is actually a side effect of the hardware implementation.
For example, most IDE controllers are designed to specifically enumerate the Master channel, wait two seconds, and then enumerate the Slave channel. Various uncontrollable timing factors may affect the enumeration order.
#CHANGING SERIAL NUMBER WINDOWS XP DRIVERS#
Windows will enumerate available fixed disks, followed by removable disks, assuming that the correct native Windows drivers are already present and installed on the system. The disk numbers that are assigned by Windows after it switches to native Windows storage controller drivers during startup are dependent solely on the order in which the disks are enumerated and processed by Plug and Play. Therefore, Windows initiates its own query for device enumeration.
Windows has no information about any changes to hardware when the computer is turned off. Windows uses other mechanisms to differentiate disks, as Windows has no control over the disk-numbering process before startup.
#CHANGING SERIAL NUMBER WINDOWS XP CODE#
Otherwise, the system will trigger a bug check with Stop error code of 0x7B. When there is a match within the time-out period, normal startup will proceed. Windows waits for several seconds for the system disk to enumerate through Plug and Play. During startup, Windows switches from using the BIOS INT13 support to native Windows drivers to access disks. There is no direct relationship between the BIOS order, and the order in which Windows numbers the disks.
The BIOS may or may not enumerate disks in a specific order. The disk-assignment numbers may not necessarily match the corresponding SATA or RAID channel numbers. Also, drives may enumerate in different orders if the operating mode of the hard disk controller is changed in the BIOS (for example, RAID mode versus non-RAID mode). Therefore, hard disks may have different disk numbers across multiple system startups. This problem may also occur during regular computer startup. Note You may experience this problem if you configure the operating system during installation or if you perform a recovery process that was provided by the computer manufacturer. You expect the disk assignment numbers to match the corresponding SATA or RAID channel numbers. In this scenario, Disk 0 may not be assigned to the hard disk on channel 0, and Disk 1 may not be assigned to the hard disk on channel 1. The SATA or RAID hard disks are attached to channels 0 and 1. You add two Serial Advanced Technology Attachment (SATA) or RAID hard disks to the computer. You have a computer that's running one of the following operating systems: For more information, refer to this Microsoft webpage: Support is ending for some versions of Windows. To continue receiving security updates for Windows Vista, make sure that you're running Windows Vista with Service Pack 2 (SP2). Support for Windows Vista Service Pack 1 (SP1) ended on July 12, 2011.
#CHANGING SERIAL NUMBER WINDOWS XP PRO#
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