- The grldr.mbr file can be obtained from inside the grub4dos download zip file and comprises of the MBR boot sector and the Stage 1.5 boot code - it will look for the /grldr file and then run it. The grldr file contains an embedded pre-boot menu.lst in the last 512 bytes of the file.
- Grldr Is Missing Windows 7. I believe this is a linux 'brub loader', but it's been so long since i've.
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Load via ntldr (Windows NT/2K/XP) - 1
Copy C:Grub4dosgrldr to the root directory of an existing windows install and add the following line to the [operating systems] section of the configuration file boot.ini -
NOTE 1 - the path 'C:grldr' should be used even if the Windows OS has a different drive letter.
NOTE 2 – boot.ini is a hidden system file. It is not displayed by default, in order to edit it you will need to open Explorer and select the Tools menu then select Folder Options… and open the View tab.
NOTE 2 – boot.ini is a hidden system file. It is not displayed by default, in order to edit it you will need to open Explorer and select the Tools menu then select Folder Options… and open the View tab.
- Enable 'Show hidden files and folders'
- Disable 'Hide extensions for known file types'
- Disable 'Hide protected operating system files'
The edited boot.ini file will look something like this -
[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)WINDOWS='Microsoft Windows XP Professional' /noexecute=optin /fastdetect
C:grldr='Grub4Dos'
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)WINDOWS='Microsoft Windows XP Professional' /noexecute=optin /fastdetect
C:grldr='Grub4Dos'
Now reboot windows – a boot menu should be displayed with a new option for Grub4dos (see figure 1).
Alternatively, adapt this method to boot C:Grub4dosgrldr.mbr. Copy C:Grub4dosgrldr.mbr to the root of your Windows partition and add C:grldr.mbr='Grub4dos' entry in boot.ini. grldr will still need to be copied to the root of a supported drive.
A reminder from README_GRUB4DOS.txt if loading grldr via ntldr - '...ntldr only loads the startup code of grldr (i.e., the leading 16 sectors of grldr), not the whole grldr file'. The embedding settings in the startup code consequently scans for grldr in all supported (hd) type devices. If grldr is present on more than one partition then another instance of grldr could be loaded. If for example grldr is present on (hd0,0) and (hd0,3) and Windows is booted from (hd0,3), ntldr will load the first 16 sectors of (hd0,3)/grldr. All other partitions would then be scanned for grldr and in this example (hd0,0)/grldr would be loaded.
Load via ntldr (Windows NT/2K/XP) - 2
If Windows is not installed, ntldr can still be used to load Grub4dos - the boot device will however need to have a Windows NT/2000/XP partition boot sector (boot sector must ‘call’ NT Loader ntldr). There are several utilities for installing the boot sector including -
- mkbt.exe - Bart’s Make Bootable. Can be executed from Windows however you will need a bootsector to write to the device. Usage mkbt -x *.bin #: (where # is drive letter allocated to drive and *.bin is bootsector to install)
- bootpart.exe - Must be executed from DOS. Download bootpart and copy to a DOS boot disk. Boot system into DOS and use command BOOTPART WINNT BOOT:#: (where # is drive letter allocated to drive).
- bootsect.exe - Included in Windows Vista and can be executed from Windows. Usage bootsect.exe /nt52 #: /force (where # is drive letter allocated to drive). This file is also available as part of the Windows Automated Installation Kit (WAIK).
You will also need to copy ntldr, ntdetect.com and boot.ini (from a windows install) and C:Grub4dosgrldr to the boot device. Edit boot.ini and add the following entry –
[boot loader]
timeout=10
default= C:grldr
[operating systems]
C:grldr='Grub4Dos'
timeout=10
default= C:grldr
[operating systems]
C:grldr='Grub4Dos'
Load via bootmgr (Windows Vista/2008/7)
The Windows Vista/2008/7 boot loader bootmgr can not directly load grldr, it can however be used to load grldr.mbr.
The Windows Vista/2008/7 boot configuration file BCD (Boot Configuration Data) is a database similar in format to a registry hive and cannot be directly edited with a text editor. To add an entry for Grub4dos use the command line tool bcdedit.exe. To install grub4dos copy the file C:Grub4dosgrldr.mbr to the Windows boot partition (usually the active partition on the first hard disk - the drive will contain the BCD store and bootmgr). To manually create an entry in the BCD store -
Try Hd0 0 Ntfs5 No Grldr Windows 7
- Open a Command Prompt with administrator privileges (right click and select Run as administrator)
- Enter the following text (where - %STORE% = path to BCD file (e.g. C:bootBCD)) -
BCDEDIT.EXE /store %STORE% /create /d 'Start GRUB4DOS' /application bootsector
- This will return a unique guid number for the new entry in the format, e.g. -
- The 32 character string is then used in the following commands (substitute %guid% for your own guid value created above, and substitute %STORE% with the path to the BCD file) -
BCDEDIT.EXE /store %STORE% /set %guid% device boot
BCDEDIT.EXE /store %STORE% /set %guid% path grldr.mbr
![Grldr Grldr](/uploads/1/2/6/6/126617508/335400704.jpg)
BCDEDIT.EXE /store %STORE% /displayorder %guid% /addlast
- Copy grldr and menu.lst to a supported partition type.
No Grldr Windows 7 64-bit
- Alternatively the above commands can be scripted, however you will still need to copy C:Grub4dosgrldr.mbr to the boot partition. Open notepad and cut and paste the following text (do not copy manually as the text on one of the lines has become wrapped) -