On Wed, Aug 10, 2011 at 5:50 AM, Mark Cave-Ayland
<mark.cave-ayland@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));
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.
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