Felix Zielcke wrote:
Am Montag, den 12.10.2009, 14:37 +0200 schrieb Emmanuel Gamby:
Yes, I agree with you. Is it a way to easily validate this. For
instance, by dumping the corresponding sectors before and after the
problem ?
With `fdisk -lu' you can see at what sector your first partition starts.
Usually this is 63
dd if=/dev/sda of=sda.1 count=63 would save everything until the first
sector of it to file sda.1 in current directory.
To see the difference you could then e.g. use
diff -u <(hd sda.1) <(hd sda.2)
I compared the dumps. They are indeed different. I don't know whether it
makes sense I send you them since it's a problem with Windows. Let me
know whether you want them.
Hm maybe try if booting into the Windows safe mode also causes this.
The only way we could fix this inside GRUB 2 would be to add an option
to grub-install to force the use of blocklists.
But we won't do that.
In fact we did it the other way, you need to use the --force option if
you really want them in case embeding isn't possible.
A workaround for you would be use the MBR code of the `mbr' package and
then install GRUB 2 to a bootsector instead of MBR and set the
boot/active flag on that partition.
Well, I am not a GRUB expert, but I will read the manual.
Thanks for your help.
The GRUB manual would be the wrong place to look for this.
the mbr package provides install-mbr script.
To install it's code into MBR: install-mbr /dev/sda
To install GRUB 2 into bootsector: grub-install --force /dev/sda1
I did grub-install --force /dev/sda2 since /dev/sda1 is my Windows
partition. The warning message is a bit scary...
To active bootflag there: cfdisk /dev/sda select the partition with the
arrow keys, choose Bootable, then Write and then Quit.
But don't set the boot flag on more then one partition.
I.e. if your Windows one has it still, you need to remove it there with
the Bootable button or b key.
I removed the bootflag from Windows partition and set it on /dev/sda2.
I rebooted the system and it works now. I am able to switch between the
two operating systems.
Thanks again for your help,
Manu
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