[patch] Logical-partition-residing bootloader chainload patch for GRUB Legacy

grub-chainloading-logical-partitions.patch (text/plain), 1.01 KB, created by Fulvio Scapin on 2008-07-06 01:53:06 UTC

diff -ru grub-0.97/stage2/disk_io.c grub-0.97-patched/stage2/disk_io.c
--- grub-0.97/stage2/disk_io.c	2004-05-23 18:35:24.000000000 +0200
+++ grub-0.97-patched/stage2/disk_io.c	2008-07-06 00:56:03.000000000 +0200
@@ -746,6 +746,8 @@
 #ifndef STAGE1_5
 static unsigned long cur_part_offset;
 static unsigned long cur_part_addr;
+static unsigned long cur_part_start;
+static int cur_part_entry;
 #endif
 
 /* Open a partition.  */
@@ -815,6 +817,8 @@
       
       cur_part_offset = part_offset;
       cur_part_addr = BOOT_PART_TABLE + (entry << 4);
+      cur_part_start = part_start;
+      cur_part_entry = entry;
 #endif /* ! STAGE1_5 */
 
       /* If this is a valid partition...  */
@@ -1142,6 +1146,7 @@
 	  src = (char *) SCRATCHADDR + BOOTSEC_PART_OFFSET;
 	  while (dst < (char *) BOOT_PART_TABLE + BOOTSEC_PART_LENGTH)
 	    *dst++ = *src++;
+	  PC_SLICE_START (BOOT_PART_TABLE - PC_SLICE_OFFSET, cur_part_entry) = cur_part_start;
 	  
 	  /* Set the active flag of the booted partition.  */
 	  for (i = 0; i < 4; i++)