Updating to xp
And each ebcd.00X file corresponds to one and only one Windows NT/XP install.Creating a new Windows XP entry with Easy BCD is very easy.All you need to do is uncheck the checkbox labeled “automatically detect the correct drive.” Subsequently, a drop-down box containing a list of all mounted partitions will appear, and you can choose the Windows XP installation you wish to boot into.Clicking “Add Entry” will cause Easy BCD to automatically create the easyldr#, ntdetect.com, and ebcd.00x files needed to boot into the selected partition.Keep in mind that there’s only one active partition on disk 0, and that one and only one may exist at a time.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.Easy BCD supports the creation of both standard (NTLDR) entries and its own custom Easy LDR ones.
Don’t be put-off by the title though, these same steps apply to any legacy NT-based operating system, meaning that these same steps are used (without exception) to boot into Windows 2003, XP, 2000, Neptune, and NT.
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.
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.
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.
The MBR then loads some more binary code in the bootsector of the active partition on that same disk.