Re: error: embedding is not possible, but this is required for RAID and LVM install.

[Andrey Borzenkov]

В Mon, 31 Mar 2014 17:32:20 +0200
bl0 <address@hidden> пишет:

> On Sunday 30 March 2014 19:04:55 Andrey Borzenkov wrote:
> > В Sun, 30 Mar 2014 16:49:54 +0200
> >
> > bl0 <address@hidden> пишет:
> > > Hello,
> > >
> > > I try to install grub2 v2.00 to my hard disk. It fails with these 
> > > messages:
> > > > warning: your embedding area is unusually small.  core.img won't fit
> > > > in it..
> > >
> > > My first partition starts at sector 63. Is this unusual?
> >
> > Well, modern systems tend to start first partition on 1M boundary.
> 
> Does this mean that grub2 will only support hard disks partitioned recently
> and will not support hard disks which have been in use for a longer time?
> 

address@hidden:~> LC_ALL=C ll /boot/grub2/i386-pc/core.img 
-rw-r--r-- 1 root root 26480 Jan 14 22:06 /boot/grub2/i386-pc/core.img

> > > > error: embedding is not possible, but this is required for RAID and
> > > > LVM install.
> > >
> > > So, embedding is required but not possible. From this, it's clear to me
> > > that it is not possible to use grub2 on my system configuration? Should
> > > I start looking for another bootloader?
> >
> > It depends on your disk configuration. If you provide more information,
> > someone may have an idea how to use grub2 in your case.
> 
> When I searched the web for this error message, most of the time the problem
> was "solved" by moving data around (sometimes large amounts of data) to
> accomodate grub. I expect software to accomodate the user for the user's
> convenience rather than have the user jump through hoops to accomodate the
> software for the developers convenience.
> 
> From my perspective it's clear what to do. A bootloader which does not fit
> in the 31 KB embedding area needs to be loaded into memory by another
> bootloader which does fit in that area. My current setup is grub2 v2.00
> loaded using 'multiboot' from an lvm volume by another bootloader,
> grub2 v1.99, which does fit in the embedding area (with tar module instead
> of ext2).
> 
> Using v1.99 alone is an option but it removes the ability to install future
> versions of grub with new features. I prefer to keep grub2 v1.99 for the
> sole purpose of loading a later version of grub. Really this is the only
> sure way I can see to use future versions of grub which will probably
> continue to grow bigger if fitting into 31 KB is no longer a design goal.
> 

Good. So you have solution for your problem.