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<!--DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" -->
<!-- Begin Block Tagged Note 2 - wdc:SupplementalFinancialStatementDataTextBlock-->
<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 12pt"><b>2. Supplemental Financial Statement Data</b>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt"><i>Inventories</i>
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="76%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Jan. 1,</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Jul. 3,</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>2010</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>2009</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6"><b>(in millions)</b></td>
<td> </td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Raw materials and component parts
</div></td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>102</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">97</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Work-in-process
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>212</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">154</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Finished goods
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>139</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">125</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Total inventories
</div></td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>453</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">376</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
<div align="left" style="font-size: 10pt; margin-top: 12pt"><i>Warranty</i>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     The Company records an accrual for estimated warranty costs when revenue is recognized. The
Company generally warrants its products for a period of one to five years. The warranty provision
considers estimated product failure rates and trends, estimated repair or replacement costs and
estimated costs for customer compensatory claims related to product quality issues, if any. A
statistical warranty tracking model is used to help with estimates and assists the Company in
exercising judgment in determining the underlying estimates. The statistical tracking model
captures specific detail on hard drive reliability, such as factory test data, historical field
return rates, and costs to repair by product type. If actual product return trends, costs to repair
returned products or costs of customer compensatory claims differ significantly from estimates,
future results of operations could be materially affected. Management’s judgment is subject to a
greater degree of subjectivity with respect to newly introduced products because of limited field
experience with those products upon which to base warranty estimates. Management reviews the
warranty accrual quarterly for products shipped in prior periods and which are still under
warranty. Any changes in the estimates underlying the accrual may result in adjustments that impact
current period gross margin and income. Such changes are generally a result of differences between
forecasted and actual return rate experience and costs to repair. Changes in the warranty accrual
for the three and six months ended January 1, 2010 and December 26, 2008 were as follows (in
millions):
</div>
<!-- Folio -->
<!-- /Folio -->
</div>
<!-- PAGEBREAK -->
<div style="font-family: 'Times New Roman',Times,serif">
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="52%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6"><b>THREE MONTHS</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6"><b>SIX MONTHS</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6" style="border-bottom: 1px solid #000000"><b>ENDED</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6" style="border-bottom: 1px solid #000000"><b>ENDED</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Jan. 1,</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Dec. 26,</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Jan. 1,</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Dec. 26,</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>2010</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>2008</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>2010</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>2008</b></td>
<td> </td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Warranty accrual, beginning of period
</div></td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>132</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">119</td>
<td> </td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>123</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">114</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Charges to operations
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>50</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">30</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>89</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">61</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Utilization
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right"><b>(32</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(26</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right"><b>(62</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(48</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Changes in estimate related to pre-existing warranties
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>5</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(2</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right"><b>5</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(6</td>
<td nowrap="nowrap">)</td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Warranty accrual, end of period
</div></td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>155</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">121</td>
<td> </td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>155</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">121</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     Accrued warranty also includes amounts classified in non-current other liabilities of $37
million at January 1, 2010 and $28 million at July 3, 2009.
</div>
<div align="left" style="font-size: 10pt; margin-top: 12pt"><i>Subsequent Events</i>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     The Company evaluated subsequent events through January 29, 2010, the date these financial
statements were issued, and there were no material subsequent events that required recognition or
disclosure in these financial statements.
</div>
</div>
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