[cgutman] 47531: [FREELDR] - Remove an overzealous API check and the work-around for it

Author: cgutman
Date: Thu Jun  3 10:09:42 2010
New Revision: 47531

URL: http://svn.reactos.org/svn/reactos?rev=47531&view=rev
Log:
[FREELDR]
- Remove an overzealous API check and the work-around for it

Modified:
    trunk/reactos/boot/freeldr/freeldr/arch/i386/pcdisk.c

Modified: trunk/reactos/boot/freeldr/freeldr/arch/i386/pcdisk.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/arch/…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/arch/i386/pcdisk.c [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/arch/i386/pcdisk.c [iso-8859-1] Thu Jun  3 10:09:42
2010
@@ -277,18 +277,6 @@
 	{
 		DPRINTM(DPRINT_DISK, "Using cached value %s for drive 0x%x\n", LastSupported
? "TRUE" : "FALSE", DriveNumber);
 		return LastSupported;
-	}
-
-	// Some BIOSes report that extended disk access functions are not supported
-	// when booting from a CD (e.g. Phoenix BIOS v6.00PG and Insyde BIOS shipping
-	// with Intel Macs). Therefore we just return TRUE if we're booting from a CD -
-	// we can assume that all El Torito capable BIOSes support INT 13 extensions.
-	// We simply detect whether we're booting from CD by checking whether the drive
-	// number is >= 0x90. It's 0x90 on the Insyde BIOS, and 0x9F on most other
BIOSes.
-	if (DriveNumber >= 0x90)
-	{
-		LastSupported = TRUE;
-		return TRUE;
 	}
 
 	LastDriveNumber = DriveNumber;
@@ -338,15 +326,6 @@
 		return FALSE;
 	}
 
-	if (!(RegsOut.w.cx & 0x0001))
-	{
-		// CX = API subset support bitmap
-		// Bit 0, extended disk access functions (AH=42h-44h,47h,48h) supported
-		printf("Suspicious API subset support bitmap 0x%x on device 0x%lx\n",
RegsOut.w.cx, DriveNumber);
-		LastSupported = FALSE;
-		return FALSE;
-	}
-
 	LastSupported = TRUE;
 	return TRUE;
 }