Saturday, August 15, 2015

Recovery Console



When you use the Windows Recovery Console, you can obtain limited access to the NTFS file system, FAT, and FAT32 volumes without starting the Windows graphical user interface (GUI). In the Windows Recovery Console, you can perform the following actions:
·       Use, copy, rename, or replace operating system files and folders
·       Enable or disable service or device startup the next time that you start your computer
·       Repair the file system boot sector or the master boot record (MBR)
·       Create and format partitions on drives



Note Only an administrator can obtain access to the Windows Recovery Console. This prevents unauthorized users from using any NTFS volume.




Option 1: If you have already installed the Recovery Console
If you have already installed the Recovery Console, you can select it during your usual Windows Startup. To run the Recovery Console:
1.    During Startup, select Recovery Console from the startup options menu.
2.    If you have a dual-boot or multiboot system, select the installation that you want to access from the Recovery Console.
3.    When you are prompted, type the Administrator password.
4.    At the command prompt, type Recovery Console commands, and then you can refer to the commands that are listed in the "Available commands within Windows Recovery Console" section.
5.    At any time, you can type Help for a list of available commands.
6.    At any time, you can type Help commandname for help on a specific command.For example, you can type help attrib to display the help on the attributes command.
7.    At any time, you can exit Windows Recovery Console by typing Exit at the command line


Option 2: Starting the Windows Recovery Console from the Windows XP CD-ROM
If you have not preinstalled the Windows Recovery Console, you can start the computer and use the Recovery Console directly from your original Windows XP installation disc. If your computer is already in Windows and you want to add the Windows Recovery Console as a startup option, go to the next section "Adding the Windows Recovery Console as a startup option."
1.    Insert the Windows XP CD into your CD drive and restart your computer. If you are prompted, select any options required to start (boot) from the CD.
2.    When the text-based part of Setup begins, follow the prompts. Select the repair or recover option by pressing R.
3.    If you have a dual-boot or multiboot system, select the installation that you want to access from the Recovery Console.
4.    When you are prompted, type the Administrator password.
5.    At the command prompt, type Recovery Console commands, and then you can refer to the commands that are listed in the "Available commands within Windows Recovery Console" section.
6.    At any time, you can type Help for a list of available commands.
7.    At any time, you can type Help commandname for help on a specific command. For example, you can type help attrib to display the help on the attributes command.
8.    At any time, you can exit Windows Recovery Console by typing Exit at the command line.


Option 3: Adding the Windows Recovery Console as a startup option

If your computer starts Windows, you can add the Windows XP Recovery Console as a startup option from the Windows environment. To install the Recovery Console as a startup option, follow these steps:
1.    With Windows running, insert the Windows CD into your CD drive.
2.    Click Start and clickRun.
3.    Type the following commands (where X: is the CD Drive letter), and then press ENTER on your keyboard.
X:\i386\winnt32.exe /cmdcons
Note There is a space before /cmdcons.
4.    Click OK and follow the instructions to finish Setup.

Note This adds the Windows Recovery Console to the Windows Startup folder.

5.    Restart your computer and select the Recovery Console option from the list of available operating systems.
Important If you are using software mirroring, see the following article in the Microsoft Knowledge Base:
229077 Mirroring prevents pre-installing the Recovery Console 


Restrictions and limitations of the Recovery Console
When you use the Windows Recovery Console, you can use only the following items:
·       The root folder
·       The %SystemRoot% folder and the subfolders of the Windows installation that you are currently logged on to
·       The Cmdcons folder
·       The removable media drives such as the CD drive or the DVD drive
Note If you try to access other folders, you may receive an "Access Denied" error message. This does not necessarily mean that data that is contained in those folders is lost or corrupted. It only means that the folder is unavailable while you are running the Windows Recovery Console. Also, when you are using the Windows Recovery Console, you cannot copy a file from the local hard disk to a floppy disk. However, you can copy a file from a floppy disk or from a CD-ROM to a hard disk, and you can copy a file from one hard disk to another hard disk. 


Using the Command Console within Windows Recovery Console
The Recovery Console gives you limited access to the NTFS file system, FAT, and FAT32 volumes. Recovery Console prevents the familiar Windows Graphical User Interface (GUI) from loading in order to repair and recover Windows functionality.

After you start the Windows Recovery Console, you receive the following message:

Microsoft Windows(R) Recovery Console

The Recovery Console provides system repair and recovery functionality.
Type EXIT to exit the Recovery Console and restart the computer.

1: C:\WINDOWS

Which Windows Installation would you like to log on to ?
(To cancel, press ENTER)

Enter the number for the appropriate Windows installation. In this example, you would press 1. Then, Windows prompts you to enter the Administrator account password.

Note If you use an incorrect password three times, the Windows Recovery Console closes. Also, if the Security Accounts Manager (SAM) database is missing or damaged, you cannot use the Windows Recovery Console because you cannot be authenticated correctly. After you enter your password and the Windows Recovery Console starts, type Exit to restart the computer.

When you use Windows XP Professional, you can set group policies to enable automatic administrative logon. For more information about how to set Recovery Console to enable automatic administrative logon, click the following article number to view the article in the Microsoft Knowledge Base:

312149 How to enable an administrator to log on automatically in Recovery Console 


Available commands within Windows Recovery Console
The following commands are available within the Windows Recovery Console. The commands are not case-sensitive.

Warning Some of these commands can make your system inoperable. Read the whole explanation of any command before you enter it onto the command line. Seek the advice of a support professional if you have any questions or concerns about a particular command.

HELP
Use the help command to list all the following supported commands:
   attrib    del        fixboot   more     set
   batch     delete     fixmbr    mkdir    systemroot
   bootcfg   dir        format    more     type
   cd        disable    help      net          
   chdir     diskpart   listsvc   rd           
   chkdsk    enable     logon     ren          
   cls       exit       map       rename 
   copy      expand     md        rmdir





                           
ATTRIB
Use the attrib command together with one or more of the following parameters to change the attributes of a file or a folder:
-R
+R
-S
+S
-H
+H
-C
+C
Notes
+ Sets an attribute
- Resets an attribute
R Read-only file attribute
S System file attribute
H Hidden file attribute
C Compressed file attribute

You must set or clear at least one attribute.

To view attributes, use the dir command. 
BATCH
batch inputfile [outputfile]
Use this command to run commands that are specified in a text file. In the command syntax, inputfile specifies the text file that contains the list of commands to be run, and outputfile specifies the file that contains the output of the specified commands. If you do not specify an output file, the output appears on the screen. 
BOOTCFG
Use this command for boot configuration and recovery. This command has the following options:
bootcfg /add
bootcfg /rebuild
bootcfg /scan
bootcfg /list
bootcfg /disableredirect
bootcfg /redirect [portbaudrate] | [useBiosSettings]
Examples:
bootcfg /redirect com1 115200
bootcfg /redirect useBiosSettings
You can use the following options:
/add Adds a Windows installation to the boot menu list.
/rebuild Iterates through all Windows installations so that you can specify which installations to add.
/scan Scans all disks for Windows installations and displays the results so that you can specify which installations to add.
/default Sets the default boot entry.
/list Lists the entries already in the boot menu list.
/disableredirect Disables redirection in the boot loader.
/redirect Enables redirection in the boot loader, with the specified configuration. 

CD and CHDIR
Use the cd and chdir commands to change to a different folder. For example, you can use the following commands:
Type cd .. to change to the parent folder.
Type cd drive: to display the current folder in the specified drive.
Type cd without parameters to display the current drive and folder.
The chdir command treats spaces as delimiters. Because of this, you must put quotation marks ("") around a folder name that contains a space.The following is an example:
cd "\windows\profiles\username\programs\start menu"
The chdir command works only in the system folders of the current installation of Windows, in removable media, in the root folder of any hard disk partition, or in the local installation sources. 

CHKDSK
chkdsk drive /p /r
The chkdsk command checks the specified drive and repairs or recovers the drive if the drive requires it. The command also marks any bad sectors and it recovers readable information.

You can use the following options:
/p Does an exhaustive check of the drive and corrects any errors.
/r Locates bad sectors and recovers readable information.
Note If you specify the /r option, the /p option is implied. When you specify the chkdsk command without arguments, the command checks the current drive with no options in effect.

When you run the chkdsk command, you must use the Autochk.exe file. CHKDSK automatically locates this file in the startup folder. If the Command Console was preinstalled, the startup folder is typically the Cmdcons folder. If CHKDSK cannot find Autochk.exe in the startup folder, CHKDSK tries to locate the Windows installation disc. If it cannot find the installation media, CHKDSK prompts you for the location of the Autochk.exe file. 

CLS
Use this command to clear the screen. 

COPY
copy source destination
Use this command to copy a file. In the command syntax, source specifies the file to copy and destination specifies the folder or file name for the new file. You cannot use wildcard characters indicated by an asterisk (*), and you cannot copy a folder. If you copy a compressed file from the Windows installation disc, the file is automatically decompressed while it is copied.

The source of the file can be removable media, any folder in the system folders of the current Windows installation, the root of any drive, the local installation sources, or the Cmdcons folder.

If destination is unspecified, the default destination is the current folder. If the file already exists, you are prompted whether you want the copied file to overwrite the existing file. The destination cannot be removable media. 

DEL and DELETE
del drive: path filename
delete drive: path filename
Use this command to delete a file. In the command syntax, drive: path filename specifies the file that you want to delete. The delete command works only in the system folders of the current Windows installation, in removable media, in the root folder of any hard disk partition, or in the local installation sources. The delete command does not accept wildcard characters. 

DIR
dir drive: path filename
Use this command to display a list of files and subfolders in a folder. In the command syntax, drive: path filename specifies the drive, folder, and files to list. The dir command lists all files, including hidden files and system files. Files can have the following attributes:
D Directory
H Hidden file
S System file
E Encrypted
R Read-only file
A Files ready for archiving
C Compressed
P Reparse point 
The dir command works only in the system folders of the current Windows installation, in removable media, in the root folder of any hard disk partition, or in the local installation sources. 

DISABLE
disable servicename
Use this command to disable a Windows system service or a driver. In the command syntax, servicename specifies the name of the service or driver that you want to disable.

Use the listsvc command to display all services or drivers that are eligible to be disabled. The disable command prints the old start type of the service before resetting the start type to SERVICE_DISABLED. Record the old start type if you must enable the service again.

The disable command displays the following start_type values:
SERVICE_DISABLED
SERVICE_BOOT_START
SERVICE_SYSTEM_START
SERVICE_AUTO_START
SERVICE_DEMAND_START

DISKPART
diskpart /add/deletedevice_name drive_name partition_name size
Use this command to manage the partitions on your hard disk volumes. You can use the following options:
/add Creates a new partition.
/delete Deletes an existing partition.
device_name The name of the device that is used to create a new partition.
drive_name A drive-letter-based name, for example D:.
partition_name The partition-based name for deleting an existing partition size The size of the new partition in megabytes. 
You can determine the device name from the output of the MAP command, for example, \Device\HardDisk0. You can use the partition name instead of the drive name argument, for example, \Device\HardDisk0\Partition1. If you use no arguments, a user interface for managing your partitions appears.

Warning If you use this command on a disk that has a dynamic disk configuration, you may damage the partition table. Do not modify the structure of dynamic disks unless you are using the Disk Management tool. 

ENABLE
enable servicename start_type
You can use the enable command to enable a Windows system service or a driver.

Use the listsvc command to display all eligible services or drivers to enable. The enable command prints the old start type of the service before it is reset to the new value. It is a good idea to note the old value, in case you have to restore the start type of the service.

Valid options for start_type are as follows:
SERVICE_BOOT_START
SERVICE_SYSTEM_START
SERVICE_AUTO_START
SERVICE_DEMAND_START
If you do not specify a new start type, the enable command prints the old start type for you. 
EXIT
Use the exit command to exit the Recovery Console and restart your computer. 
EXPAND
expand source [/F:filespec] [destination] [/y]
expand source [/F:filespec] /D
Use this command to expand a file. In the command syntax, source specifies the name of the file to be expanded and destination specifies the folder for the new file. If you do not specify a destination, the command uses the current folder by default. You cannot include wildcard characters.

You can use the following options:
/y Do not prompt before overwriting an existing file.
/f:filespec Identifies the files to be expanded.
/d Do not expand; display only a directory of the files in the source.
If the source contains more than one file, you must use the /f:filespec parameter to find the specific files to be expanded. You can include wildcard characters.

The destination can be any folder in the system folders of the current Windows installation, in the root of the drive, in the local installation sources, or in the Cmdcons folder. The destination cannot be removable media, and the destination file cannot be read-only. Use the attrib command to remove the read-only attribute.

Unless you use the /y option, the expand command prompts you if the destination file already exists. 

FIXBOOT
fixboot drive name:
Use this command to write the new Windows boot sector code on the system partition. In the command syntax, drive name is the drive letter where the boot sector will be written. This command fixes damage in the Windows boot sector. This command overrides the default setting, which writes to the system boot partition. The fixboot command is supported only on x86-based computers. 

FIXMBR
fixmbr device name
Use this command to repair the MBR of the boot partition. In the command syntax, device name is an optional device name that specifies the device that requires a new MBR. Use this command if a virus has damaged the MBR and Windows cannot start.

Warning This command can damage your partition tables if a virus is present or if a hardware problem exists. If you use this command, you may create inaccessible partitions. We recommend that you run antivirus software before you use this command.

You can obtain the device name from the output of the map command. If you do not specify a device name, the MBR of the boot device is repaired, for example:
fixmbr \device\harddisk2
If the fixmbr command detects an invalid or non-standard partition table signature, fixmbr command prompts you for permission before it rewrites the MBR. The fixmbr command is supported only on x86-based computers. 

FORMAT
format drive: /Q /FS:file-system
Use this command to format the specified drive to the specified file system. In the command syntax, /Q performs a quick format of the drive, drive is the drive letter of the partition to format, and /FS:file-system specifies the type of file system to use such as FAT, FAT32, or NTFS. If you do not specify a file system, the existing file system format is used if it is available. 

LISTSVC
The listsvc command lists all available services, drivers, and their start types for the current Windows installation. This command is useful together with the disable and enable commands.

The list is extracted from the %SystemRoot%\System32\Config\System hive. If the System hive is damaged or missing, the results are unpredictable.
LOGON logon
The logon command lists all detected installations of Windows and then requests the local administrator password for the copy of Windows that you want to log on to. If your first three tries to log on fail, the console closes, and your computer restarts.
MAP
map arc
Use this command to list drive letters, file system types, partition sizes, and mappings to physical devices. In the command syntax, the arc parameter tells the map command to use ARC paths instead of Windows Device paths.

MD and MKDIR
The md and mkdir commands create new folders. Wildcard characters are not supported. The mkdir command works only in the system folders of the current installation of Windows, in removable media, in the root folder of any hard disk partition, or in the local installation sources.

MORE more filename
Use this command to display a text file to the screen.

NET
Although the Help file states otherwise, the net command is not usable from the Recovery Console. The protocols stack is not loaded for the Recovery Console. Therefore, there is no networking function available. 

RD and RMDIR
Use rd and rmdir commands to delete a folder. These commands work only in the system folders of the current Windows installation, in removable media, in the root folder of any hard disk partition, or in the local installation sources. 

REN and RENAME
Use the ren and rename commands to rename a file.

Note You cannot specify a new drive or path for the renamed file. These commands work only in the system folders of the current Windows installation, in removable media, in the root folder of any hard disk partition, or in the local installation sources.

SET
You can use the set to display or modify four environment options.
AllowWildCards = FALSE AllowAllPaths = FALSE AllowRemovableMedia = FALSE NoCopyPrompt = FALSE
For more information about how to use the set command, click the following article number to view the article in the Microsoft Knowledge Base:
235364 Description of the SET command in Recovery Console 

SYSTEMROOT
The systemroot command sets the current working folder to the %SystemRoot% folder of the Windows installation that you are currently logged on to. 

TYPE type filename
Use the type command to display a text file.

References
For a Microsoft Windows 2000 version of this article, see 229716.

For more information about the Recovery Console, visit the following Microsoft Web site: 


Properties 
Applies to
·       Microsoft Windows XP Home Edition
·       Microsoft Windows XP Professional
Keywords: 
kbresolve kbenv kbinfo KB314058


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