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Annotation of q_a/samples/ddk/ramdisk/readme.txt, revision 1.1.1.1

1.1       root        1: RAM Disk Driver
                      2: ---------------
                      3: 
                      4: This sample demonstrates a software only Windows NT Device Driver.  This driver
                      5: is provided for educational purposes only.  Generally the Windows NT cache
                      6: manager does a much better job of optimizing memory usage than using a RAM disk.
                      7: 
                      8: 
                      9: Building and Installing
                     10: -----------------------
                     11: 
                     12:     1)  Set the environment variables by running the SDK SETENV.BAT and the DDK
                     13:         SETENV.BAT.
                     14: 
                     15:     2)  Run BUILD.EXE with the -cef options.
                     16: 
                     17:     3)  The driver will be built in the OBJ\I386 directory, copy it to
                     18:         %WINDIR%\SYSTEM32\DRIVERS.
                     19: 
                     20:     4)  Edit RAMDISK.INI, change parameters to match your preferences.
                     21: 
                     22:     5)  Run REGINI.EXE with RAMDISK.INI as an argument.
                     23: 
                     24:     6)  Reboot and enjoy.
                     25: 
                     26: 
                     27: Configuring the RAM disk
                     28: ------------------------
                     29: 
                     30: The RAM disk can be configured using the registry.  The RAMDISK.INI file
                     31: contains the default values for all the configurable parameters.  A brief
                     32: description of each parameter follows:
                     33: 
                     34: Name                Type        Default Value
                     35: ====                ====        =============
                     36: 
                     37: BreakOnEntry        REG_DWORD   0
                     38: 
                     39:     Boolean value which determines whether a break point will be generated
                     40:     during the DriverEntry routine.  It has no effect in a free build of the
                     41:     driver.
                     42: 
                     43: DebugLevel          REG_DWORD   0
                     44: 
                     45:     This value specifies the level of diagnostic messages produced.  Larger
                     46:     values result in more verbose messages.  It has no effect in a free build
                     47:     of the driver.
                     48: 
                     49: DiskSize            REG_DWORD   0x100000 (1,048,576 1Mb)
                     50: 
                     51:     The size of the RAM disk in bytes.
                     52: 
                     53: DriveLetter         REG_SZ      Z:
                     54: 
                     55:     The drive letter associated with the RAM disk.
                     56: 
                     57: RootDirEntries      REG_DWORD   512
                     58: 
                     59:     The number of entries in the root directory.
                     60: 
                     61: SectorsPerCluster   REG_DWORD   2
                     62: 
                     63:     The granularity of the allocation.

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