UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. _________)*
Micropolis Corp.
_________________________________________________________________
(Name of Issuer)
Common
_________________________________________________________________
(Title of Class of Securities)
594907107
____________________________
(CUSIP Number)
Check the following box if a fee is being paid with this statement
_X_. (A fee is not required only if the filing person: (1) has a
previous statement on file reporting beneficial ownership of more
than five percent of the class of securities described in Item 1;
and (2) has filed no amendment subsequent thereto reporting
beneficial ownership of five percent or less of such class.) (See
Rule 13d-7).
*The remainder of this cover page shall be filled out for a
reporting person's initial filing on this form with respect to the
subject class of securities, and for any subsequent amendment
containing information which would alter the disclosures provided
in a prior cover page.
The information required in the remainder of this cover page shall
not be deemed to be "filed" for the purpose of Section 18 of the
Securities Exchange Act of 1934 ("Act") or otherwise subject to
the liabilities of that section of the Act but shall be subject to
all other provisions of the Act (however, see the Notes).
Page 1 of 3 pages
<PAGE>
CUSIP NO. 594907107
13G
________________________________________________________________________________
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
State of Wisconsin Investment Board
39-6006423
________________________________________________________________________________
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP *
(a)_____
Not Applicable (b)_____
________________________________________________________________________________
3 SEC USE ONLY
________________________________________________________________________________
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Madison, Wisconsin
________________________________________________________________________________
5 SOLE VOTING POWER
NUMBER OF 1,466,000
SHARES _________________________________________________
BENEFICIALLY 6 SHARED VOTING POWER
OWNED BY Not Applicable
EACH _________________________________________________
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON 1,466,000
WITH _________________________________________________
8 SHARED DISPOSITIVE POWER
Not Applicable
________________________________________________________________________________
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,466,000
________________________________________________________________________________
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES *
Not Applicable
________________________________________________________________________________
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
9.65%
________________________________________________________________________________
12 TYPE OF REPORTING PERSON *
EP (Public Pension Fund)
________________________________________________________________________________
* SEE INSTRUCTION BEFORE FILLING OUT!
Page 2 of 3 pages
<PAGE>
Item 1. Issuer
(a) Micropolis Corp.
(b) 21211 Nordhoff Street
Chatsworth, CA. 91311
Item 2. Person Filing
(a) State of Wisconsin Investment Board
(b) P.O. Box 7842
Madison, WI 53707
(c) Wisconsin State Agency
(d) See cover page
(e) See cover page
Item 3. This Statement is filed pursuant to 13d-1(b) or 13d-2(b) and the State
of Wisconsin Investment Board is a government agency which manages public
pension funds subject to provisions comparable to ERISA.
Item 4. Ownership
(a) See Row 9 on Page 2
(b) See Row 11 on Page 2
(c) The State of Wisconsin Investment Board retains sole voting and
dispositive power for all shares.
Item 5. If this statement is being filed to report the fact that as of the
date hereof the reporting person has ceased to be the beneficial owner of more
than five percent of the class of securities, check the following ____.
Item 6. Not Applicable
Item 7. Not Applicable
Item 8. Not Applicable
Item 9. Not Applicable
Item 10. Certification
By signing below I certify that, to the best of my knowledge and belief,
the securities referred to above were acquired in the ordinary course of
business and were not acquired for the purpose of and do not have the effect of
changing or influencing the control of the issuer of such securities and were
not acquired in connection with or as a participant in any transaction having
such purposes or effect.
SIGNATURE
After reasonable inquiry to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.
February 13, 1995
------------------------------
Date
George Natzke
------------------------------
Signature
George Natzke, Administrator
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Name/Title
Page 3 of 3
