IRS_drv

IRS_drv_get

#include <irs.h>

typedef struct IRS_drv_get {
    UCHAR  IRS_filler_5;   // must be IRS_GET_DRVINFO
    UCHAR  IRS_filler_6;   // zero if successful
    UCHAR  IRS_DrvLetter;  // drive letter
    ULONG  IRS_DrvFlags;   // flags; see below
} IRS_drv, *PIRS_drv;

Contains information for a IRS_GET_DRVINFO function.

IRS_DrvLetter

Indicates the drive. Can be a hexadecimal number in the range 80h to 8fh for INT 13h devices or an upper or lowercase letter in the range of A to Z. If the drive letter requested is not a valid IOS device, then the call returns with a status of 1.

IRS_DrvFlags

Flags. Can be any combination of these values:

IRS_DRV_SINGLE_FLOPPY	Indicates a floppy device that performs drive letter toggling. The same physical device responds to both drive letters A and B.
IRS_DRV_RMM	Indicates that the requested drive uses the real mode mapper for logical disk access.
IRS_DRV_REMOTE	Indicates a remote (non local) drive.
IRS_DRV_REMOVABLE	Indicates a device that uses removable media.
IRS_DRV_INT13_DRIVE	Indicates a device that can be accessed using the INT 13h interface specification.
IRS_DRV_PAGEABLE	Indicates that the device drivers controlling this drive have pageable code in them.

Except for IRS_DRV_ON_INT13_DRIVE, these are numerically equivalent to their DCB counterparts.