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[zfs-grub.git] / pvepatches / biosdisk.c-Check-disk-size-sanity.patch

From 4200ad44fe782193a397bd0f0ab72283a6d25e89 Mon Sep 17 00:00:00 2001
From: Vladimir Serbinenko <phcoder@gmail.com>
Date: Tue, 20 Jan 2015 14:10:34 +0000
Subject: 	* grub-core/disk/i386/pc/biosdisk.c: Check disk size sanity.

---
diff --git a/grub-core/disk/i386/pc/biosdisk.c b/grub-core/disk/i386/pc/biosdisk.c
index 6b21525..26a4973 100644
--- a/grub-core/disk/i386/pc/biosdisk.c
+++ b/grub-core/disk/i386/pc/biosdisk.c
@@ -419,6 +419,11 @@ grub_biosdisk_open (const char *name, grub_disk_t disk)
 	    }
         }
 
+      if (data->sectors == 0)
+	data->sectors = 63;
+      if (data->heads == 0)
+	data->heads = 255;
+
       if (! total_sectors)
         total_sectors = data->cylinders * data->heads * data->sectors;
     }
--
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