Re: Booting TrueCrypt Windows Hard Drive

[Felix Zielcke]

Am Samstag, den 14.11.2009, 13:22 +0100 schrieb Johannes Bauer:
> Felix Zielcke schrieb:
> 
> > On launchpad someone made a bugreport where removing the search and
> > drivemap commands from the generated Win 7 menu entry by os-prober
> > breaks booting it.
> > So I removed drivemap command for Vista and 7.
> > It wouldn't make much sense if the search line would break it.
> 
> Well, without the drivemap command, it doesn't boot up at all...
> 
> > Did you try without drivemap?
> 
> Yup. TrueCrypt immediately complains:
> 
>  TrueCrypt Boot Loader
> Loader Damaged! Use Rescue Disk: [blabla]
> 
> > You could also try to directly chainload MBR with (hd1)
> 
> Well, that's the same as "chainloader (hd0,1)/boot/truecrypt.mbr", isn't
> it? I tried it and they yielded the same result.

I meant with set root=(hd1) or set root=(hd0) and with/without drivemap.
As I said there's a difference if you do set root=(hd1) chainloader
(hd0)+1 or set root=(hd0) ; chainloader +1

> > Note that there's a difference if you use set root=(hd1,1) chainloader
> > +1 or just chainloader (hd1,1)+1
> 
> The "chainloader (hd1,1)+1" which was what I originally tried does not
> work at all since (hd1,1) is encrypted at that point and thus grub does
> not know recognize the file format and won't boot - forcing the
> chainload with "--force" causes the system to lock up at boot.
> 

MBR would be (hd1) or (hd0) not (hd1,1)

But maybe it's really like Vladimir thinks and Truecrypt loader and
windows bootloader are different in this case.

-- 
Felix Zielcke
Proud Debian Maintainer and GNU GRUB developer