PBMountVol

Mount a volume

#include <Files.h> File Manager (PBxxx)

ParmBlkPtr pb; address of a 64-byte VolumeParam structure

returns Error Code; 0=no error

PBMountVol mounts the volume in the specified drive; i.e., it reads the

volume information and prepares for subsequent access. If no other volumes

are mounted, it becomes the default volume.

pb is the address of a 64-byte VolumeParam structure or any of the

variants which contain all the relevant fields:

Out-In Name Type Size Offset Description

<-> ioVRefNum short 2 22 Drive number (1=internal floppy, etc.)

<- ioResult OSErr 2 16 Error Code (0=no error)

Returns: an operating system Error Code. It will be one of:

noErr (0) No error

badMDBErr (-60) Bad master directory block

extFSErr (-58) External file system

ioErr (-36) I/O error

memFulErr (-108) Not enough room in heap

noMacDskErr (-57) Not a Mac diskette (bad signature bytes)

nsDrvErr (-56) No such drive

paramErr (-50) Bad drive number

tmfoErr (-42) Too many files open (with HFS volumes)

volOnLinErr (-55) Volume already on-line

Notes: PBMountVol is needed only by applications that don't use GetNextEvent

(i.e., they rely, instead, on the lower-level GetOSEvent). By the time

GetNextEvent has returned a disk-insert event, the diskette has already

been mounted, initialized, or rejected.

Referenced by (13):