Repair Windows 7 boot menu on UEFI

boyans said:

Volumes and Partitions are not the same thing.
Can you list partitions and post output ?

diskpart
>sel disk 0
>list par

And unhiding is just changing the id of partition
>sel par # - # is partition number
>set id=07 - NTFS
>set id=17 - NTFS hidden


And for transferring .iso to USB I would use "Windows 7 USB DVD Download Tool".

Here it is:

Code:

Partition ###    Type                  Size            Offset
Partition 1        System               200MB         1024KB
Partition 2        Reserved             128MB         201MB
Partition 3        System               140GB          329MB
Partition 4        Primary               138GB          141GB
Partition 5        Primary               393GB          279GB
Partition 6        Primary               25GB            673GB

From what I heard, Windows 7 USB DVD Download Tool format the USB under NTFS :-?

Saltgrass said:

The more I think about it, the possibility of the Logical partition causing a problem is a good conclusion.

Your flashdrive showing as NTFS, when you show it being FAT32, plus the Hidden Partition, and other things.

I would use Partition Wizard, the Home version, bootable which free, and remove any partitions placed on the drive. Then use it to change your logical partitions to primary, or just remove them also if you can.

I am currently installing the test bed....

As you can see in the partition list, there is no logical partition . I think maybe there is a problem with the BIOS that it can not identify the correct properties of the partitions ?

Unfortunately, I run out of blank CD. I cannot create a bootable CD of Partition Wizard. I will try diskpart or Gparted instead.

Saltgrass said:

Sorry, I had to edit a response. I suggest removing just the partitions placed on the drive by Ubuntu. And converting the logical ones to primary.

Logical partitions have shown some problems when dealing with UEFI

What do you mean by saying "removing just the partitions placed on the drive by Ubuntu" ? Since I install Ubuntu alongside Windows 7, there is no dedicated partition for Ubuntu. The ubuntu folder is in Partition 4. Do I need to reformat it ?

boyans said:

Volumes and Partitions are not the same thing.
Can you list partitions and post output ?

diskpart
>sel disk 0
>list par

And unhiding is just changing the id of partition
>sel par # - # is partition number
>set id=07 - NTFS
>set id=17 - NTFS hidden


And for transferring .iso to USB I would use "Windows 7 USB DVD Download Tool".

I just tried to set id=07 for the OS partition. There is an error, the error mesage is The specified type is not in the correct format.

Using HELP SET, I found out that id=07 is only use for MBR disk. I will try GParted instead.

Just finished the Trial Ubuntu Legacy (MBR) install on a Windows 7 UEFI install drive. Both OSes boot normally when the correct boot device is selected.

During the install, I added a 100 mb boot partition for Ubuntu to use. I will assume if you did not do that, Ubuntu probably would not boot.

But I have attached some pictures to show the setup. I have NO logical partitions. I will try that next to see what happens and post back.

Saltgrass said:

Just finished the Trial Ubuntu Legacy (MBR) install on a Windows 7 UEFI install drive. Both OSes boot normally when the correct boot device is selected.

During the install, I added a 100 mb boot partition for Ubuntu to use. I will assume if you did not do that, Ubuntu probably would not boot.

But I have attached some pictures to show the setup. I have NO logical partitions. I will try that next to see what happens and post back.

So this may be the problem that I was unable to boot to Ubuntu since I have no MBR for Ubuntu only a Ubuntu option that is not bootable.

Thank you very much. I will add a boot partition for Ubuntu next time

I'm using GParted to hide the OS partition and then unhide to see whether it can be accessed.

I just used GParted to hide the Windows partition. It was hidden as show in diskpart. Then I used Gparted to unhide it (Gparted now showed that the partition was hidden). However, diskpart still identified the Windows partition as hidden.

More bad news, the Windows Boot Manager is now showing error. The error status is 0xc000000f. File \EFI\Microsoft\Boot\BCD. Info: An error occurred while attempting to read the boot configuration data.

I don't know what to do next. It seems if the Windows partition is not unhidden, nothing can be done

As far as I know, you cannot install another OS in the same partition as a previous OS.

So, I would suggest you restore you system back to a factory default and start over. This time, if you want to install Ubuntu, use the UEFI version and make partitions for it during the install.

Saltgrass said:

As far as I know, you cannot install another OS in the same partition as a previous OS.

So, I would suggest you restore you system back to a factory default and start over. This time, if you want to install Ubuntu, use the UEFI version and make partitions for it during the install.

The problem is I cannot restore the system back to the factory default since the recovery wizard from the OEM requires access to the Windows partition (it assumes that the Windows partition is C, which is incorrect).

Maybe I must do a clean install to start over and ignore the recovery partition. :-s

Yes I was wrong "Windows 7 USB DVD Download tool" cannot be used for EFI USB install as it formats the USB with NTFS.

All you need to make USB bootable is format to FAT32,
copy the contents of DVD to USB using explorer and
copy \bootmgr.efi to \efi\boot\bootx64.efi.

GPT partitions have GUIDs to be identified as SYSTEM, BASIC, MS_RESERVED in the partition table but the first sector of a GPT partition has the filesystem (FAT32, NTFS) type stored so it can be interpreted by the OS.

It is strange that diskpart cannot change filesystem type (at least 07 to 17)
(NTFS to hidden NTFS). EFI GUID type and filesystem type are two different notions.

boyans said:

Yes I was wrong "Windows 7 USB DVD Download tool" cannot be used for EFI USB install as it formats the USB with NTFS.

All you need to make USB bootable is format to FAT32,
copy the contents of DVD to USB using explorer and
copy \bootmgr.efi to \efi\boot\bootx64.efi.

GPT partitions have GUIDs to be identified as SYSTEM, BASIC, MS_RESERVED in the partition table but the first sector of a GPT partition has the filesystem (FAT32, NTFS) type stored so it can be interpreted by the OS.

It is strange that diskpart cannot change filesystem type (at least 07 to 17)
(NTFS to hidden NTFS). EFI GUID type and filesystem type are two different notions.

Do you have any suggestion that I can make the Windows partition unhidden ?