1 files changed, 8 insertions, 3 deletions
diff --git a/dos/chud.c b/dos/chud.c
index 498d97b..f3b0beb 100644
--- a/dos/chud.c
+++ b/dos/chud.c
@@ -98,9 +98,8 @@ static int ioctl_read_abs_sector(uint8_t drive, void *buffer, uint32_t sector, i
 	regs.h.cl = CHUDISK_IOCTL_DISK_READ_ABS_SECTOR;
 	regs.x.dx = FP_OFF(&ciod);
 
-	if (intdos(&regs, &regs) == 0) {
-		return 0;
-	} else {
+	intdos(&regs, &regs);
+	if (regs.x.cflag) {
 		struct DOSERROR err;
 		// Get the extended error from DOS, more useful than a simple EACCES
 		// and translate to watcom's errno
@@ -118,13 +117,19 @@ static int ioctl_read_abs_sector(uint8_t drive, void *buffer, uint32_t sector, i
 		case DOS_ERROR_READ_FAULT:
 		case DOS_ERROR_WRITE_FAULT:
 		case DOS_ERROR_GEN_FAILURE:
+		case DOS_ERROR_CRC:
 			errno = EIO;
 			break;
+		case DOS_ERROR_NOT_ENOUGH_MEMORY:
+			errno = ENOMEM;
+			break;
 		default:
 			errno = EFAULT;
 			break;
 		}
 		return -errno;
+	} else {
+		return 0; // No error
 	}
 }