##### 



Exhibit 10.10.1
 
 
 
 AMENDMENT NO. 2 TO VOLUME PURCHASE AGREEMENT
 Amendment Komag Komag
Inc. WDC
 RECITALS
 VPA
   AGREEMENT
 1. Defined Terms
 2. Exhibit B Exhibit B Exhibit B
 3. Exhibit D Exhibit D Exhibit D
 4. Exhibit F Exhibit F Exhibit F
 5. Conditions
 6. Ratification of VPA
 1




---



##### 



7. Confidentiality
 8. Entire Agreement
 9. Counterparts
 2




---



##### 



Western Digital Technologies, Inc.,
    
    Komag USA (Malaysia) Sdn.a Delaware corporation.
    
    a Malaysian corporationBy: /s/Tom Nieto
    
    By: /s/Kheng Huat OungName: Tom Nieto
    
    Name: Kheng Huat OungTitle: Vice President, Materials
    
    Title: Managing DirectorKomag Incorporateda Delaware corporation
 /s/ Ray L.
Martin  Ray L. Martin  Executive Vice President, Customer Sales and Service
 3




---



##### 



EXHIBIT B
 PRICES
 (Page 2)
    Exhibit D
  Per Unit Offset
  1




---



##### 



EXHIBIT D
 Progress Milestones
  1




---



##### 



EXHIBIT F
 Volumes
 Quarter
    
    
    Volume Requirement[***] Fiscal Quarter
[***] (i.e., the quarter

ending [***])
    
    
    [***] Units[***] Fiscal Quarter
[***] (i.e., the quarter

ending [***])
    
    
    [***] Units[***] Fiscal Quarter
[***] (i.e., the quarter

ending [***])
    
    
    [***] Units[***] Fiscal Quarter
[***] (i.e., the quarter

ending [***])
    
    
    [***] Units[***] Fiscal Quarter
[***] (i.e., the quarter

ending [***])
    
    
    [***] Units[***] Fiscal Quarter
[***] (i.e., the quarter

ending [***])
    
    
    [***] UnitsEach WDC Fiscal Quarter
following the [***]

Fiscal Quarter [***]
(i.e., each quarter
after the
quarter ending
[***]) for the term of
this VPA.
    
    
    [***] Units
 1




---



##### 



AMENDMENT NO. 3 TO VOLUME PURCHASE AGREEMENT
 Amendment Komag Komag
Inc. WDC
 RECITALS
 VPA
   AGREEMENT
 Defined Terms
 Exhibit B Exhibit B Exhibit B
 Exhibit D Exhibit D
 Exhibit F Exhibit F
 Conditions
 Ratification of VPA
 1




---



##### 



Confidentiality
 Entire Agreement
 Counterparts
 2




---



##### 



Western Digital Technologies, Inc.,
    
    Komag USA (Malaysia) Sdn.a Delaware corporation.
    
    a Malaysian corporationBy: /s/ Tom Nieto
    
    By: /s/ Kheng Huat OungName: Tom Nieto
    
    Name: Kheng Huat OungTitle: Vice President, Materials
    
    Title: Managing DirectorKomag Incorporateda Delaware corporation
 /s/
Ray L. Martin  Ray L. Martin  Executive Vice President, Customer Sales and Service
 1




---



##### 



EXHIBIT B
 PRICES
 (Page 2)
    Exhibit D
  Per Unit Offset
  1




---



##### 



EXHIBIT D
 Progress Milestones
 1




---



##### 



EXHIBIT F
 Volumes
 Quarter
    
    
    Volume Requirement[***]
Fiscal Quarter for [***]

(i.e., the quarter ending [***])
    
    
    [***] Units[***]
Fiscal Quarter for [***]

(i.e., the quarter ending [***])
    
    
    [***] Units[***]
Fiscal Quarter for [***]

(i.e., the quarter ending [***])
    
    
    [***] Units[***]
Fiscal Quarter for [***]

(i.e., the quarter ending [***])
    
    
    [***] Units[***]
Fiscal Quarter for [***]

(i.e., the quarter ending [***])
    
    
    [***] Units[***]
Fiscal Quarter for [***]

(i.e., the quarter ending [***])
    
    
    [***] Units*Each
WDC Fiscal Quarter following the [***]
Fiscal
Quarter for [***] (i.e., each quarter after
 the quarter
ending [***]) for the term of this
VPA.
    
    
    [***] Units
  1