IOMEGA CORPORATION
                              1821 West Iomega Way
                                 Roy, Utah 84067

                                  July 8, 1998

Idanta Partners Ltd.
4660 La Jolla Village Drive
San Diego, CA 92122

Dunn Family Trust,
dated October 28, 1998
David J. Dunn, Trustee
4660 La Jolla Village Drive
San Diego, CA  92122


         Reference is made to the following three Senior Subordinated Promissory
Notes made by Iomega Corporation ("Iomega"):

         (i)       Senior Subordinated Promissory Note dated July 1, 1998 in the
                   original principal amount of $20,000,000 issued to Idanta
                   Partners Ltd. (the "First Note");

         (ii)      Senior Subordinated Promissory Note dated July 8, 1998 in the
                   original  principal  amount  of  $7,500,000  issued to Idanta
                   Partners Ltd. (the "Second Note"); and

         (iii)    Senior Subordinated  Promissory Note dated July 8, 1998 in the
                  original principal amount of $12,500,000 issued to Dunn Family
                  Trust dated  October 28,  1998,  David J. Dunn,  trustee  (the
                  "Third Note").

         The purpose of this letter  agreement is to  memorialize  our agreement
with respect to the matters set forth below.

         1.  Section 2 of the Second  Note and the Third Note  contemplates  the
repayment or  prepayment to the holders of the Second Note and the Third Note of
amounts  borrowed  under such  notes but not used to  acquire  shares of capital
stock of Nomai S.A. The holders of the Second Note and the Third Note, on behalf
of themselves and any future  holders,  and Iomega agree that any such repayment
or prepayment  shall be made pro-rata  amount the holders of the Second Note and
the Third Note,  based on an  allocation  of 68.75% to the holders of the Second
Note and 31.25% to the holders of the Third Note,  until such time as the Second
Note is paid in full and, thereafter, 100% to the holders of the Third Note.

         2. The holders of the First  Note,  the Second Note and the Third Note,
on behalf of themselves and any future holders, and iomega agree that, except as
contemplated  by paragraph 1 above,  any  repayment or prepayment by Iomega with
respect  to any of the notes  shall be made  pro-rata  among the  holders of the
First Note, the Second Note and the Third Note, based on the principal amount of
each such note outstanding at the time of such repayment or prepayment.

         3. The holders of the First  Note,  the Second Note and the Third Note,
on behalf of themselves  and any future  holders,  agree that they will hold for
the benefit of the other holders any amounts received by them from Iomega which,
in accordance with paragraphs 1 or 2 above, should have been received by another
holder and promptly pay over such amounts to the intended recipient.

         4. The  holders of the First  Note,  the Second Note and the Third Note
each agree to attach a copy of this letter  agreement to their  respective  note
and to require any assignee or other  transferee of such note to  acknowledge in
writing that it is bound by the terms hereof.

         5. Iomega agrees to use commercially  reasonable efforts during 1999 to
obtain the funds  necessary  to prepay or repay the First Note,  the Second Note
and the Third Note out of proceeds from the issuance of equity  interests in the
Company or subordinated notes

         6. This letter  agreement shall be construed and enforced in accordance
with,  and the rights of the parties shall be governed by, the laws of the State
of Delaware.

         7. This letter  agreement may be executed in two or more  counterparts,
each of which  shall be  deemed  an  original  but all of which  together  shall
constitute one and the same instrument. This letter agreement may be executed by
facsimile signature.

         Please sign below to indicate your agreement with the foregoing.



                                                   Very truly yours,

                                                   IOMEGA CORPORATION


                                                   By:/s/ Robert J. Simmons
                                                      ---------------------
                                                   Robert J. Simmons
                                                   Vice President and Treasurer


Agreed:

IDANTA PARTNERS LTD.

By: /s/ David J. Dunn
    -----------------
David J. Dunn
Managing General Partner


DUNN FAMILY TRUST
DATED OCTOBER 28, 1998
DAVID J. DUNN, TRUSTEE

By: /s/ David J. Dunn
    -----------------
David J. Dunn
Trustee