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            Copyright © 1996 Bryce Cogswell and Mark Russinovich

                       last updated November 6, 1996

   NTRecover V1.0[Image]

        Introduction   NTRecover is an advanced Windows NT dead-system
                       recovery utility for x86 NT installations. Using
                       NTRecover, NT machines that fail to boot because of
                       data corruption, improperly installed software or
                       hardware, or faulty configuration, can be accessed
                       and recovered using standard administrative tools,
                       as if the machine were up and running. Using an
                       adjacent NT-based computer connected by a serial
                       cable, NTRecover allows an administrator to:

                          * Copy files between the non-booting system and
                            the working NT system.
                          * Edit or delete files that may be preventing the
                            system from booting.
                          * Run virus detection and removal programs.
                          * Repair damaged filesystem structures using
                            chkdsk.

                       NTRecover consists of host and client software,
                       where the host software runs on a "good" NT 3.51 or
                       4.0 system, and the client software executes on a
                       "dead" system in need of repair. The "dead" system
                       is booted off a floppy disk directly to the
                       NTRecover program, so repair is possible even when
                       basic startup code in NT, such as NTLDR, fails. The
                       host and client machines are connected with a
                       standard null-modem serial cable.

                       The NTRecover host software creates virtual disk
                       drives on the host machine that represent the drives
                       present on the client computer. When native NT file
                       systems, such as NTFS and FAT, access the drives,
                       NTRecover manages communications over the serial
                       cable to the client software to transfer disk data
                       back and forth between the two machines. As far as
                       Windows NT on the host machine is concerned, the
                       drives created by NTRecover are indistinguishable
                       from the local drives present on the host, and so
                       they can be manipulated with Windows NT disk
                       utilties, including high-level tools like the
                       Windows NT Explorer, and low-level tools such as
                       chkdsk.

 Version Information   We are offering a free trial version of NTRecover
                       that behaves just as the retail version, except that
                       it permits only read-access to the damaged system.
                       This version is sufficient for salvaging data off
                       dead NT systems, and demonstrates the ease with
                       which files and data on a dead system can be
                       inspected and corrected. Restoring files or
                       repairing drives on a dead system is possible with
                       the write-capable retail version of NTRecover.

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