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- SNOBACK COMMAND
-
- Purpose:Backs up all files from a hard disk to a
- number of floppy disks or backs up a RAM
- disk (such as VDISK) to a single file on
- hard disk or floppy disk.
-
- Format: [d:][path]SNOBACK d: d: [/S][/Q]
-
- Type: External
-
- Remarks:Specify the parameters:
-
- [d:][path] before SNOBACK to specify the
- drive and path that contains the SNOBACK
- command file.
-
- d: to specify the drive that you wish to
- back up (source).
-
- d: to specify the drive that will receive
- the information to be backed up
- (destination). If the /S switch is used,
- this parameter specifies the lower of two
- drives to be used for the destination.
-
- /S to cause the destination drive to be
- swapped between the drive specified above
- and the next higher drive. This allows
- you to place a disk in the unused drive
- while the routine is writing information
- on the other drive. This switch also
- allows you to answer the "mount" prompt
- before it is given (type-ahead).
-
- /Q to cause all prompts which require
- your response to be bypassed (quiet).
- This allows the SNOBACK command to be
- placed in a batch file for automatic
- backup of RAM disks.
-
-
-
-
- SNOBACK COMMAND (page 2)
-
- Notes: SNOBACK backs up all used allocation
- units on the source disk. The backup
- made is a complete backup of all files in
- all directories of the disk. No
- individual files may be named, since
- SNOBACK obtains its speed by not
- accessing each directory seperately.
-
- It is important that CHKDSK be run with
- the /F switch before runnint SNOBACK.
- This insures that the table which DOS
- uses to mark used allocation units is
- correct before the backup is made.
-
- If the destination is floppy disks, you
- may wish to set VERIFY to ON so that DOS
- will verify the information written to
- the floppy for readability. This greatly
- increases the reliability of the
- information written to the floppy disk
- but also increases the time needed to
- take the backup. (This same
- recommendation applies to using the DOS
- BACKUP command). Don't forget to set
- VERIFY to OFF when done taking the backup
- to prevent slower operation of your hard
- disk.
-
- Destination disks must be pre-formatted
- before being used. SNOBACK will place a
- file on these disks called SBACKUP.###,
- where ### is the number (beginning with
- 001) of the disk. If any file already
- exists on the destination disk with the
- name SBACKUP (with any extension), that
- file will first be erased.
-
-
-
-
-
-
-
- SNOBACK COMMAND (page 3)
-
- If you are backing up a RAM disk, the
- destination may of course be a hard disk.
- In this case, the SBACKUP.### file will
- be created in the current directory of
- the hard disk.
-
- The backup copy of the disk includes
- information used by DOS to indicate the
- size and formatting parameters of the
- disk. This means that when restoring the
- information, care must be taken to insure
- that the disk to receive the restored
- copy MUST be formatted exactly as it was
- when SNOBACK was used to backup the
- information. Also, the partition size of
- a hard disk (as created by FDISK) must be
- the same.
-
- Example:The following example backs up all files
- from the fixed disk drive C to diskettes
- in drive A:
-
- A>snoback c: a:
-
- If your system had two diskette drives,
- you would use the following command:
-
- A>snoback c: a:/s
-
- The following example backs up all files
- in a RAM disk configured as drive D to
- the file SBACKUP.001 on the current
- directory of the fixed disk in drive C.
- The /q switch is used to suppress the
- mount messages:
-
- A>snoback d: c:/q
-