[clue] A wish for movable file systems.

[Matt James]

I've done similar with a Parted Magic boot CD on a hand full of systems.
It is a little nerve wracking the first few times, but it works. I'll
second messing with a VM first, and even then, take a full disk image
before you get too carried away. :-)

FWIW,

Matt
On Jul 19, 2014 9:05 PM, "David L. Anselmi" <anselmi at anselmi.us> wrote:

> I kinda like GRUB2, compared to GRUB (which I used little) and LILO (which
> I used instead of GRUB to
> support /boot on LVM).  But the installed image seems to be growing, which
> means it doesn't fit in
> the 32kB available at the beginning of my disks (they're old and 32kB used
> to be standard).
>
> I tried finding a way to shrink down the image, removing things that
> weren't essential.  But that
> seems really hard, or at least poorly documented.
>
> So I'm currently keeping my boot loaders on other media.  Not terribly
> convenient.
>
> The difficult part of this is that making the free blocks at the beginning
> of the disk larger
> requires moving the beginning of the first partition, which is LVM and
> probably contains the
> beginning of an ext3/4 file system.  Scooting a file system further back
> on the disk doesn't seem
> very possible.
>
> It occurs to me that perhaps I can move the LVM extents at the beginning
> of the partition and then
> change the start of the partition without ext3/4 being aware of the
> change.  So that might be nice,
> but I suspect I'll have to have plenty of sleep in order to get it right.
>  I guess practicing on
> something other than / is a good idea.
>
> Thanks for listening.
> Dave
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