View Single Post
Old 7th June 2010
Marrea Marrea is offline
New User
Join Date: Jun 2010
Posts: 3

An update on my previous post

I have now managed to ascertain that bootmgr is indeed in the 100 MB System Reserved partition. I hadn’t realised that, even though the Windows installation does not give this partition a drive letter, in order to view the contents in Windows Explorer and copy files to it all you have to do is go into Disk Management and assign a drive letter to it there. I therefore assigned the letter R to the partition, deleted the Ubuntu menu entry I had previously created, moved linux.bin to the root of the R partition, and ran a new set of bcdedit commands as follows:
C:\Windows\system32>bcdedit /create /d "Ubuntu 10.04" /application bootsector
The entry {66a21b30-62f1-11df-9194-d9f24e40b78f} was successfully created.

C:\Windows\system32>bcdedit /set {66a21b30-62f1-11df-9194-d9f24e40b78f} device boot
The operation completed successfully.

C:\Windows\system32>bcdedit /set {66a21b30-62f1-11df-9194-d9f24e40b78f} path \linux.bin
The operation completed successfully.

C:\Windows\system32>bcdedit /set {66a21b30-62f1-11df-9194-d9f24e40b78f} device partition=r:
The operation completed successfully.

C:\Windows\system32>bcdedit /displayorder {66a21b30-62f1-11df-9194-d9f24e40b78f} /addlast
The operation completed successfully.
Running bcdedit now gives the following:
Windows Boot Manager
identifier              {bootmgr}
device                  partition=R:
description             Windows Boot Manager
locale                  en-US
inherit                 {globalsettings}
default                 {current}
resumeobject            {66a21b2b-62f1-11df-9194-d9f24e40b78f}
displayorder            {current}
toolsdisplayorder       {memdiag}
timeout                 30

Windows Boot Loader
identifier              {current}
device                  partition=C:
path                    \Windows\system32\winload.exe
description             Windows 7
locale                  en-US
inherit                 {bootloadersettings}
recoverysequence        {66a21b2d-62f1-11df-9194-d9f24e40b78f}
recoveryenabled         Yes
osdevice                partition=C:
systemroot              \Windows
resumeobject            {66a21b2b-62f1-11df-9194-d9f24e40b78f}
nx                      OptIn

Real-mode Boot Sector
identifier              {66a21b30-62f1-11df-9194-d9f24e40b78f}
device                  partition=R:
path                    \linux.bin
description             Ubuntu 10.04
I can still boot into Windows OK but selecting the Ubuntu entry in the Windows boot menu takes me to a black screen with a flashing white cursor just as it did before. I don’t know if it is because Ubuntu is on a separate hard drive from Windows which is causing the problem, whether something in Ubuntu’s Grub needs editing, or whether I have not carried out the bcdedit commands properly.
Reply With Quote