Updating bios in windows vista
The MBR then loads some more binary code in the bootsector of the active partition on that same disk.The code in the bootsector is then run, which typically loads a binary file from the root of the same active partition, which typically presents the user with a menu of operating systems to boot from (assuming there is more than one) and proceeds to boot into the selected OS….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.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.
My advice is to go ahead with this change if you want, but simply remember the limitation so that you can change it back if you need to troubleshoot STOP messages.
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.
NOTE: When a STOP message occurs, Windows can create a debug file for very detailed analysis.
To do this, it needs a workspace equal to the amount of physical RAM you have installed.