SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

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                                    FORM 8-K
                        --------------------------------


                                 CURRENT REPORT
                    Pursuant to Section 13 or 15 (d) of the
                        Securities Exchange Act of 1934



       Date of Report (Date of earliest event reported): October 4, 1999


                            DATA GENERAL CORPORATION
             ------------------------------------------------------
             (Exact name of registrant as specified in its charter)


          Delaware                    1-7352                      04-2436397
- ---------------------------        ------------             -------------------
(State or Other Jurisdiction       (Commission                (I.R.S. Employer
      of Incorporation)            File Number)              Identification No.)



 4400 Computer Drive, Westboro, Massachusetts                          01580
- ----------------------------------------------                      -----------
   (Address of Principal Executive Offices)                         (Zip code)



       Registrant's telephone number, including area code: (508) 898-5000
                                                           ---------------


                                 Not Applicable
          -------------------------------------------------------------
          (Former Name or Former Address, if changed since last report)







Item 5.  Other Events.

         Data General  Corporation has announced that when the company's  merger
with EMC Corporation is completed,  its shareholders  will receive 0.3125 shares
of EMC common stock for each share of Data General  common stock they hold.  The
exchange  ratio is based on the $68.97 average price for EMC common stock during
the 20-day trading period that ended October 1.

         A copy  of a  press  release  issued  by Data  General  announcing  the
exchange ratio is attached hereto as Exhibit 99.1 and is incorporated  herein by
reference.

Item 7.  Exhibits.

Exhibit
 Number           Description
- --------          -----------

 99.1             Press Release dated October 4, 1999



                                   SIGNATURES

         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  registrant  has duly  caused  this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                                        DATA GENERAL CORPORATION



                                                        By:   /s/ Jacob Frank
                                                           --------------------
                                                           Jacob Frank
                                                           Vice President and
                                                           General Counsel



Date:    October 4, 1999






                                  EXHIBIT INDEX



Item 7.  Exhibits.

Exhibit
 Number            Description
- --------           ------------

99.1               Press Release dated October 4, 1999