[OpenBIOS] [PATCH 3/10] Don't stop at APPLE_VOID partition

[Natalia Portillo]

APPLE_VOID partition is just a partition entry holder, so you don't have to resize the partition table but it occupies no space on disk.
APPLE_FREE however, indicates free space on disk.

This is, if my memory don't fail, on Inside Macintosh books, Volume 2 or 4.

Sorry no link I have the books in paper :p

El 10/08/2011, a las 16:28, William Hahne escribió:

> 
> 
> On Wed, Aug 10, 2011 at 5:50 AM, Mark Cave-Ayland <mark.cave-ayland at siriusit.co.uk> wrote:
> On 09/08/11 22:54, William Hahne wrote:
> 
> The void partitions can be occasionally found on Mac OS discs (10.2 for
> example.) Previously mac-parts would just stop at the first void
> partition meaning it would never try to boot from the HFS partition.
> 
> Index: packages/mac-parts.c
> ===================================================================
> --- packages/mac-parts.c (revision 1041)
> +++ packages/mac-parts.c (working copy)
> @@ -165,9 +165,12 @@
> for (parnum = 1; parnum <= __be32_to_cpu(par.pmMapBlkCnt); parnum++) {
> SEEK( bs * parnum );
> READ( &par, sizeof(par) );
> - if( __be16_to_cpu(par.pmSig) != DESC_PART_SIGNATURE ||
> -                            !__be32_to_cpu(par.pmPartBlkCnt) )
> + if( __be16_to_cpu(par.pmSig) != DESC_PART_SIGNATURE) {
> break;
> + }
> + if ( !__be32_to_cpu(par.pmPartBlkCnt) ) {
> + continue; /* Just a void partition, ignore it. */
> + }
> DPRINTF("found partition type: %s with status %x\n", par.pmPartType,
> __be32_to_cpu(par.pmPartStatus));
> 
> Same as my comment for patch 2/10.
> 
> 
> This was also found through testing although I would assume it is documented. If you have a 10.2 disc (or I would assume most other early Mac OS X discs) lying around you can look at the partition table and see the void partitions.
> 
> William Hahne 
>  
> 
> ATB,
> 
> Mark.
> 
> -- 
> Mark Cave-Ayland - Senior Technical Architect
> PostgreSQL - PostGIS
> Sirius Corporation plc - control through freedom
> http://www.siriusit.co.uk
> t: +44 870 608 0063
> 
> Sirius Labs: http://www.siriusit.co.uk/labs
> 
> -- 
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> 
> 
> 
> 
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