No dual boot anymore, which is fine. Plugged in all my drives and Windows 7 still boots on its own. Windows XP seems dead after chkdsk (or at least its system files seem fried after only getting 1 good boot out of it), but that doesn't really matter since I've backed up everything important from it by now and don't need anything more from it.
You can test the XP HD with the maker's HD Diagnostic extended CD scan to confirm its condition.
Windows 7 wasn't available in the list of the system recovery's options. After disconnecting all another disks, it works !
If someone have the explication ...
Disk0: XP (dead)
Disk1: nothing
Disk2: W7
Disk3: nothing
Nicolas
PS: pour les anglophobes, il suffit de débrancher les autres disques et de laisser celui de Windows 7 pour que cette version soit visible dans les options de récupération système. Après cela, faire une réparation de démarrage et ce sera bon.
Since this is your first post perhaps you would like to explain more fully what the problem is and what you did. I'm assuming you did a search for Bootmgr is Missing to find this thread.
Please post back a screenshot of Disk Management - Post a Screen Capture Image
so we can look it over for any other potential problems.
What would you like to do with the other HD's? You can repair XP with an XP Repair Install with all other HD's unplugged, or you can delete the XP partition to repartition as desired in Disk Mgmt.
Make sure you keep the Win7 HD set first HDD to boot in BIOS setup when you reattach the others so it continues to boot itself and the others can't interfere. If they do interfere with Win7 boot with it confirmed set first HD to boot, I would boot the Win7 disk to rescue any files needed from the interfering HD using Copy & Paste - in Windows Recovery Console and then wipe the interfering HD with Diskpart Clean Command making sure you do not choose the Win7 HD to wipe.
Quote