Boot Configuration Data (BCD)
Boot Configuration Data File -Straight from A+ Certification book
It is not just with Vista, it is the cache that stores data on the hard disk.
If you just put in the DVD for Home Premium and choose "Upgrade" then you won't lose any data, it will just change which edition that you're running.
You can cancel it using a special cd, but you are using bitlocker for the system disk (where vista is installed) and you will try to cancel your password you will loose all your data.
EPS
Windows Boot Manager (bootmgr)File,Windows boot loader (winload.exe)File and the Boot Configuration Data (BCD) File
Tally9.0 installed
Windows Vista supports Microsoft Office documents and most audio files. .... "Word" to start Microsoft Word, "Mail" to open Windows Mail
You can't format a CD-R, the data is irreversibly etched onto it.
The Hard Drive with Windows Vista installed on it would not work in Windows 98 unless you reformatted it using the FAT32 File System, thus erasing all data. Windows Vista uses the NTFS file system, which is not supported by Windows 98.
BIOS configuration data is available in several different forms. This data is actively stored on the motherboard of each individual personal computer.
Yes, it can.