On Tue, 9 Feb 2010 20:26:45 +0100 (CET)
Mark Pustjens <pustjens@xxxxxx> wrote:
> Hi list,
>
> The attatched patch adds the `-D' option to the sfdisk call.
> This causes some extra space to be saved for the MBR, which is needed
> for grub2 in some cases.
>
> Please let me know what you think.
>
> Greetings/Groetjes
>
> Mark Pustjens
>
Hi!
man sfdisk:
-D or --DOS
For DOS-compatibility: waste a little space. (More
precisely: if a partition cannot contain sector 0, e.g. because
that is the MBR of the device, or contains the partition table
of an extended partition, then sfdisk would make it start the
next sector. However, when this option is given it skips to
the start of the next track, wasting for example 33 sectors (in
case of 34 sectors/track), just like certain versions of DOS
do.) Certain Disk Managers and boot loaders (such as OSBS, but
not LILO or the OS/2 Boot Manager) also live in this empty
space, so maybe you want this option if you use one.
I don't really see the point. this wastes some disk space to be
compatible with old, past-legacy bootloaders and OS'es.
why exactly would we want this? "some cases" ?
Dieter
