
 The MOUNT command logically connects devices to Ancillary Control
 Processors (ACPs).  There are two forms of the MOUNT command,
 depending on the device being mounted.  Note that, if the MOUNT command
 line is too long to fit on one MCR command line, it may be extended by
 typing a hyphen at the end of all but the last line (up to a maximum of
 255(10) characters.

 Files-11 Disk or  DECtape Format:

	MOU[NT] ddnn:[volume-label][/keyword][/keyword]...

 Files-11 (ANSI) Magnetic Tape Format:

	MOU[NT] device-list:[file-set-ID] [/keyword][/keyword]...

 For information on the options of the various formats, type:

	HELP MOUNT FILES11		! For help on Files-11 Format
	HELP MOUNT MAGTAPE		! For help on Magtape Format
	HELP MOUNT KEYWORDS		! For list of keywords for all
					! formats.
2 FILES11
 The general format of the command to mount a Files-11 device is:

	MOU[NT] ddnn:[volume-label][/keyword][/keyword]...

 where	ddnn: is the device-unit on which the volume is to be mounted
		(must be specified)

	volume-label is the label on the volume (written by the
		INITVOLUME command), 12 characters or less.  Default is
		12 nulls (no label).

Keywords available:

	/ACP=option         	           /PRO=option
	/DENS=density      		   /PUB
	/EXT=block-count		   /[NO]SHARE
	/FOR				   /UIC=uic-spec
	/FPRO=[system,owner,group,world]   /UNL
	/LOCK=option			   /VI
	/LRU=FCB-count			   /[NO]WAIT
	/OVR				   /WIN=retrieval-pointer-count
	/PARM="user parameters" 	   /[NO]WRITE

 Type HELP MOUNT KEYWORDS for help on the above keywords.  Type HELP
 MOUNT EXAMPLES for examples of usage.
2 MAGTAPE
 The general form of the command to mount a Files-11 (ANSI) Magnetic
 Tape is:

	MOU[NT] device-list:[file-set-ID] [/keyword(s)]

 where device-list is one or more device names on which the volume or volume 
	 set is to be mounted specified in the following matter:

		(ddn:,ddn:,ddn:...)
 
 	file-set-ID is the name you choose for the tape set.

 Keywords available:

	/ACP=option			  /OVRFSID	
	/BS=n				  /PARM="user parameters"	
	/CC=option			  /PRO=option
	/DENS=tape-density		  /PUB
	/FOR				  /RS=n	
	/FPRO=[system,owner,group,world]  /[NO]SHARE
	/[NO]HDR3			  /TR=option
	/[NO]LABEL			  /UIC=[uic]
	/LOCK=option			  /VI
	/OVR				  /VOL=(list)
	/OVRACC  			  /[NO]WAIT
	/OVREXP				  /[NO]WRITE

 Type HELP MOUNT KEYWORDS for help on the above keywords.  Type HELP
 MOUNT EXAMPLES for examples of usage.
2 KEYWORDS
 In the following list of keywords, each keyword is preceded by a code 
 that indicates the device type for which the keyword is legal. "F"
 indicates Files-11, and "T" indicates magtape. 

 (FT)	/ACP=option		Specifies the ACP to be used.
 (T)    /BS=n    		Specifies block size.
 (T)    /CC=option		Specifies the record type: FOR, LIST, or NONE.
 (FT)	/DENS=tape-density	Specifies tape density: 800, 1600, or 6250 bpi.
 (F)	/EXT=block-count	Specifies file extension increment.
 (FT)   /FOR 			Indicates a foreign volume.
 (FT)	/FPRO=[system,owner,group,world]	Specifies default file
				   protection for volume.
 (T)	/[NO]HDR3		Specifies an HDR3 label.
 (T)    /[NO]LABEL              Specifies ANSI or unlabeled format.
 (FT)   /LOCK=option     	Specifies the default value for the 
				   DISMOUNT /LOCK keyword.
 (F)	/LRU=directory-count	Specifies number of directories to be accessed.
 (FT)	/OVR			Overrides label processing.
 (T)    /OVRACC			Overrides protection. 
 (T)	/OVREXP			Overrides expiration date.
 (T)	/OVRFSID		Ignores existing File Set Identifiers.
 (FT)   /PARM="user parameters"    	Passes nonstandard parameters from 
				   command line to a foreign ACP.
 (FT)   /PRO=option		Specifies default volume protection.
 (FT)   /PUB			Specifies a volume as public.
 (T)    /RS=n			Specifies number of characteristics 
                                   in a record. 
 (FT)   /[NO]SHARE		Allows a volume to be mounted multiple times
				   by one or more users.
 (T)    /TR=option		Specifies the kind of character translation in
				   read and write operations.
 (FT)	/UIC=[uic]		Specify UIC volume is mounted under.
 (F)	/UNL			Unlocks volume index file.
 (FT)	/VI			Displays volume information on the terminal.
 (T)    /VOL=(list)             Specifies the Volume Identifier.
 (FT)   /[NO]WAIT               Specifies if operator assistance is required.
 (F)	/WIN=option     	Specify number of mapping pointers.
				to be allocated for file windows.
 (FT)   /[NO]WRITE		Allows write operations.

 For more detailed help on a specific keyword, type

	HELP MOUNT KEYWORDS keyword-name
3 ACP
 The format of the /ACP keyword is:

 (FT)	/ACP=option

 where option is the name of the Ancillary Control Processor to use
 with the volume.  The default depends upon the device type:

	Files-11 except DECtape:	F11ACP
	DECtape:			DTAACP
	Magtape:			MTAACP
3 BS
 The format of the /BS keyword is:

 (T)    /BS=n
 
 where n specifies the block size for an unlabeled magnetic tape volume or the
 block size for files on ANSI labeled tapes that are Level 1 or 2.
3 CC
 The format of the /CC keyword is:

 (T)	/CC=option

 where option is the record type for an unlabeled magnetic tape volume.
 The options are: 
	
	FOR
 	LIST
	NONE
3 DENS
 The format of the /DENS keyword is:

 (FT)	/DENS=density

 where density is 800, 1600, or 6250 bpi.  The default depends on the
 device type:

	TE16	/DENS=800
	TS11	/DENS=1600
	TU45 	/DENS=800 (or LOW)
 	TU77	/DENS=800
	TU78	/DENS=6250
3 EXT
 The format of the /EXT keyword is:

 (F)	/EXT=block-count

 where block-count specifies the number of blocks by which a file can be 
 extended when it exhausts its space allocation. The default is the value
 specified when the volume was initialized.
3 FOR
 The format of the /FOR keyword is:

 	/FOR

 On RSX-11M, /FOR is recommended but not required for working with a 
    foreign volume.
 On RSX-11M-PLUS, /FOR is required.
3 FPRO
 The format of the /FPRO keyword is:

 (FT)	/FPRO=(SYSTEM:RWED,OWNER:RWED,GROUP:RWED,WORLD:RWED)
	
	or

	/FPRO=[RWED,RWED,RWED,RWED]

 Each subfield in the keyword may be one to four of the following letters:
 R(ead), W(rite), E(xtend), D(elete). In each instance, the absence of the 
 code means that the applicable user is denied the access right. The default 
 values are taken from the volume's home block.
3 HDR3
 The format for the /HDR3 keyword is:

	/[NO]HDR3

 /HDR3 specifies whether an HDR3 label is to be written when  creating 
 new files. 

 /NOHDR3 is needed only when it is known  that the target system cannot 
 handle a tape with an HDR3 label. 

 The default is /HDR3.
3 LABEL
 The format of the /LABEL keyword is:

 (T)	/[NO]LABEL

 /LABEL specifies that a magnetic tape is in ANSI format.

 /NOLABEL specifies that the magnetic tape is unlabeled. 

 The default is /LABEL.
3 LOCK
 The format of the /LOCK keyword is:

 (FT)	/LOCK=option

 where option is Virtual (V), Nounload (N), or Unload (U). 

 On RSX-11M, this keyword is valid only for magnetic tape volumes. 

 On RSX-11M-PLUS, the keyword is valid for magnetic tapes and for
 DB:-, DM:-, and DU:-type disks.
3 LRU
 The format of the /LRU keyword is:

 (F)	/LRU=directory-count

 where directory-count specifies the approximate number of directories that 
 will be accessed simultaneously while the volume is mounted. 
3 OVR
 The format of the (privileged) /OVR keyword is:

 (FT)	/OVR

 For disks and DECtapes, this keyword overrides label processing so that a 
 volume can be mounted without specifying a volume label.

 For magnetic tapes, this keyword overrides File-Set-ID processing on the
 first tape of a tape set so that a volume can be mounted without specifying
 a File Set ID.
3 OVRACC
 The format for the /OVRACC keyword is:

 (T)	/OVRACC

 /OVRACC specifies that protection for an ANSI magnetic tape volume
 is overridden.
3 OVREXP
 The format for the /OVREXP keyword is:

 (T)	/OVREXP

 /ONVREXP specifies that the expiration date on the tape volume(s) is 
 overridden.
3 OVRFSID
 The format for the /OVRFSID keyword is:

 (T)	/OVRFSID

 /OVRFSID specifies that existing File Set Identifiers on the second 
 and subsequent magnetic tape volumes of a multivolume set are ignored.
3 PARM
 The format for the /PARM keyword is:

 (FT)	/PARM="user parameters"

 where "user parameters" instructs the MOUNT command to pass nonstandard 
 parameters from the command line to a foreign ACP. This keyword is valid
 only with foreign (/FOR) volumes.
3 PRO
 The format for the /PRO keyword is:

 (FT)	/PRO=(SYSTEM:RWCD,OWNER:RWCD,GROUP:RWCD,WORLD:RWCD)

	or

	/PRO=[RWCD,RWCD,RWCD,RWCD]


 where the protection specification (R,W,C,D) specifies the default volume 
 protection. In each instance, the absence of the code means that the 
 applicable user is denied the access right. The defaults are the values 
 specified when the volume was initialized.
3 PUB
 The format for the /PUB keyword is:

 (FT)	/PUB

 /PUB specifies that the volume is accessible by all users depending
 on the volume and file protection set for the volume. The defaults are:
	
 	/PUB if the  volume is public
	/SHARE if the volume is not allocated or set public
	/NOSHARE if the volume is allocated to a user.
3 RS
 The format for the /RS keyword is:

 (T)	/RS=n

 where n specifies the number of characters in a record for unlabeled magnetic
 tape volumes or the number of characters in a record for files on ANSI 
 labeled tapes that are Level 1 or 2.
3 SHARE
 The format for /[NO]SHARE keyword is:

 (FT) 	/[NO]SHARE

 /SHARE specifies that  a volume can be mounted multiple times  by one 
 or more users. 

 /NOSHARE specifies that  the volume is reserved for dedicated use by 
 the first user who mounted the volume. The  defaults are:

	/PUB if the volume is public
	/SHARE if the volume is not allocated or set public
 	/NOSHARE if the volume is allocated to a user
3 TR
 The format for the /TR keyword is:

 (T)	/TR=option

 where option specifies the kind of character translation used in read and 
 write operations on an unlabeled magnetic tape volume. The options are:

	NONE	 	No tranalation takes place.
	EBCDIC  	Translation from EBCDIC to ASCII for read; ASCII to
			   EBCDIC for write.
	UT1,UT2,	Translation done by user-supplied Translation tables
	UT3		that have been previously linked to MTAACP.
	
 The default is NONE.
3 UIC
 The format for the /UIC keyword is:

 (FT)	/UIC=[uic]

 where uic specifies the User Identification Code (UIC) for the volume owner
 in the form [group,member]. The brackets are required syntax.
3 UNL
 The format for the /UNL keyword is:

 (F)	/UNL

 /UNL specifies that  the volume index file should be unlocked for
 write access by a system user. Otherwise, the volume index file is read-only.
3 VI
 The format for the /VI keyword is:

 (FT)	/VI

 /VI specifies that  the volume information for the volume is  displayed 
 when the mount is completed.
3 VOL
 The format for the /VOL keyword is:

 (T) 	/VOL=(list)

 where list specifies the Volume Identifier (Volume ID) for an ANSI magnetic 
 tape. If you specify more than one Volume ID (for multivolume tape set),
 the Volume IDs must be separated by commas.
3 WAIT
 The format for the /[NO]WAIT keyword is:

 (FT)	/[NO]WAIT

 /WAIT specifies that  operator assistance is required for performing the 
 mount.

 /NOWAIT specifies that no operator assistance is needed during the mount 
 process. The volume must have been previously placed on the device and 
 readied for access (spun up/brought on-line).
3 WIN
 The format of the /WIN keyword is:

 (F)	/WIN=option

 where option specifies the number of mapping pointers to be allocated for
 file windows. The options are:

    n	        	All files are set up with this default unless
			overridden on access; the legal values are 1
 			through 127(10) or the FULL option.

    USER:n		User default value for the volume.

    INDEX:n		Number of pointers to allocate to the index
			file window.

    (USER:n,INDEX:n)    If n is not the same for both of these, defaults
			to the user default value for the volume default
			and to the number specified for the index file.

    FULL		Windows are created that map as much of the file 
			as possible; FULL can be used as n in all of 
			these options.

 The default is the number of pointers specified in the home block with
 either the INI or HOME command.
3 WRITE
 The format for the /[NO]WRITE keyword is:
 
 (FT)	/[NO]WRITE

 /WRITE specifies that write operations are allowed on the volume within 
 the limits of volume and file protection.

 /NOWRITE specifies that write operations are not allowed on the volume.

 The default is /WRITE.
 2 EXAMPLES
 To mount a pack that has a null label on an RK07 drive, selecting no
 special options:

	MOU DM1:

 To mount a magtape volume set at 1600 bpi overriding expiration dates 
 and using a continuation line:

	MOU MM(0,1,3):(PAYROLLVOL1,PAYROLLVOL2,PAYROLLVOL3,PAYROLLVOL4,-
	PAYROLLVOL5,PAYROLLVOL6)/DENS=1600/OVREXP

 To mount an RP06 for use as the main system device (because of heavy
 use, we will keep high window and LRU counts):

	MOU DB0:/OVR/LRU=10/WIN=20

