Updating bios in windows vista
NTLDR can’t get its list of operating systems from anything other than the on the active partition on disk 0, so if you add another operating system to the mix, you end up with something like this: Basically, you have to go through a two-level boot menu, and you cannot – however hard you try – add both Windows XP entries to the main bootmgr boot menu. We’ve developed our own version of NTLDR, and bootmgr will load a separate copy of Easy LDR for each Windows XP entry in the menu.In order to load either of the two XP entries, you’ll need to select the NTLDR entry (called “Legacy Entries” by default) from the bootmgr/bcd boot menu, and select the copy of Windows XP you wish to boot into from the second menu presented by NTLDR. Each copy of Easy LDR is configured to boot into one and only one copy of Windows XP, so your complicated two-level boot menu in the previous picture boils down to a much simpler and prettier result: Keep in mind that since there’s only one entry in each Easy LDR instance, no second menu will ever appear.The type of entry created depends on whether or not the “autoconfiguration checkbox” is selected when adding a new Windows XP entry in Easy BCD 2.0 and above (see the next section for more info).When a new NTLDR-based entry is created, Easy BCD creates the following files: In this case, will contain one or more entries in the standard format.If you’re not interested in the mechanics of the boot process and aren’t doing anything especially complicated, feel free to skip ahead to the step-by-step dual-booting instructions: Regardless of what you’re booting – and even what bootloader you are using – the basic boot process starts off in the same way.When you power on your PC, the BIOS is loaded which first detects and initializes basic hardware, then loads a small amount of binary code stored in the MBR of the primary boot disk.In case the boot partition (the active partition on disk 0) is not assigned a drive letter, the NST folder and its contents will be created on the system disk, while NTDETECT. INI will still be placed on the unmounted boot partition.When a new Easy LDR-based entry is created, Easy BCD creates the following files: Each ebcd.00x file in the diagram above is a boot configuration file that tells Easy LDR from which partition to load Windows XP.
This article refers to the technical aspects of the Windows XP bootloader and provides background information needed to fully understand how to correctly dual-boot newer versions of Windows (including Vista, 7, and 8) with Windows XP.Selecting the first Windows XP entry in the top-level BCD menu will directly load the first copy of Windows XP and selecting the second Windows XP entry in the top-level BCD menu will take you directly to the second copy of Windows XP, with no additional menu or action in between.Easy LDR sits quietly and invisibly in the middle, making sure everything works as expected.STOP messages of this type are rare, obscure, and usually only of interest to programmers debugging their code.Real-life scenarios of a computer encountering them are unlikely, so I’ve made it a lower priority to document them here; but we’ll be happy to address this in the Forum (which also will tip me off that I should add more to this present page).
NOTE: Many users search this site for the word minidump which often accompanies these Stop Message errors.