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- ---------------------- RECOVER - External DOS Command ------------------------
-
- RECOVER recovers information from a disk that has defective sectors. The file
- that contains the bad sectors can be recovered minus the information
- contained in the bad sectors. All files on the disk can be recovered if the
- directory is damaged.
-
- FORMAT: To recover a single file: RECOVER [d:][path]filename[.ext]
-
- To recover all files: RECOVER d:
-
- REMARKS:
-
- To Recover a Single File:
-
- d: - the drive letter of the disk where recovery is to be done. If
- you are recovering selected files, and you omit d:, the default
- drive is assumed.
- path - the directory path to the file to be recovered. If omitted,
- the current directory is assumed.
- filename - the filename of the file to be recovered.
- .ext - the filename extension of the file to be recovered.
-
- RECOVER recovers just one file at a time. If Global characters (* and ?)
- are used for the filename or extension, only the first file matching the
- specification will be recovered.
-
- After recovering a file, it should be edited to check what data is missing
- and to remove unwanted data from the end of the file.
-
- The size of the recovered file is a multiple of DOS allocation units and
- is normally larger than the original file.
-
- Recover does not restore files that have been erased.
-
- DOS stores files in segments of disk storage called sectors. A sector is
- 512 bytes. If you get error messages from DOS when trying to use a file,
- it is possible that one or more of the sectors containing the file's
- information has become unreadable. RECOVER checks each sector of the
- file, retains the information from the good sectors, and eliminates the
- data from the bad sectors. The file's name is not changed. The bad
- sectors are marked as not usable to prevent future use of the sectors.
-
-
- To Recover All Files:
-
- WARNING: This use of RECOVER should be done ONLY if the directory of the
- disk has been damaged.
-
- d: - the drive letter of the disk to be recovered. It must be specified.
-
- This form of RECOVER recovers ALL files to the form FILEnnnn.REC (where
- nnnn is a sequential number starting with 0001). Each file of this form
- points to one of the recovered files. The original filenames, even if
- they were in a valid part of the directory, are replaced with the
- FILEnnnn.REC files.
-
-
- In DOS Version 3, you may preface RECOVER with the drive letter and directory
- path, [d:][path], where the command file can be found.
-
-
- EXAMPLE:
-
- Recover the file MYFILE that has developed defective sectors. MYFILE is on the
- default drive in the current directory:
-
- RECOVER MYFILE
-
- After recovery, MYFILE will contain data from the valid sectors only. It
- should then be edited to review what data was lost and to remove any unwanted
- data.