Re: Is there a way to specify all blocks in the block list syntax?

[Alan Perry]

On 2/2/16 1:43 AM, Andrei Borzenkov wrote:
> On Tue, Feb 2, 2016 at 6:20 AM, Alan Perry <address@hidden> wrote:
> > Is there a way in the blocklist syntax (e.g., "(hd0)0+100" to specify blocks
> > 0-99 of hd0) to specify all blocks? It looks like the offset is optional,
> > but the length is required.
> Yes, looks like it.
>
> > Is there some other way to specify the entire contents of a device to
> > commands that take a file argument?
> I can think of two ways to get it
>
> - allow ($hdd) syntax without filename to mean "full device"

As I was reading the GRUB2 documentation, I thought that was the way 
that it worked. I was looking at implementing that behavior when I 
discovered the blocklist syntax and figured that I would try using that 
instead. I can get the block count.

What is the blocksize for the blocks specified in the blocklist? 
Filesystem blocksize (2048 in my case since the filesystem is iso-9660), 
512 or something else?

I am trying to pass an iso filesystem image to the loaded OS through the 
Multiboot2 info.

alan

> - extend probe command to query device size, so you could do
>
> probe --size --set size $hdd
> whatever ($hdd)+$size
>
> I prefer the latter. Patches are welcome :) But please explain your
> use case if submitting.