I have a corrupt mbr and need to know if the following commands will delete my data or just create a new bcd area for bootstrapping?
bcdedit /export C:\BCD_Backup c: cd boot attrib bcd -s -h -r ren c:\boot\bcd bcd.old bootrec /RebuildBcd
This will fix the BCD store.
To fix the MBR, you need to use
To fix the Boot Sector, use
I can be difficult to tell exactly where the boot process is breaking. But in general it goes, MBR to Boot Sector to BCD store IIRC.
I usually just go in order to fix something. FixMBR, then FixBoot, then BCD. Or just let Windows repair, which is faster.
I booted from USB which has
one after the other, but no joy. I got "0 windows install".
Then I exited out of the command prompt, went to the startup repair from the system repair options. It went through the repair thing, and then booted to the sign in screen.
You may have to do the repair more than once.