Western Digital (WDC) 10-Q 2017 Q2 Quarterly report

Exhibit 12.1

Western Digital Corporation

Computation of Ratio of Earnings to Fixed Charges

	Fiscal Year															Six Months Ended December 30, 2016
	2012			2013			2014			2015			2016
	(in millions, except ratios)
Computation of earnings:
Income before provision for income taxes	$	1,757		$	1,222		$	1,752		$	1,577		$	153		$	50
Fixed charges	47			75			75			69			285			455
Undistributed equity in income from 50%-or-less-owned affiliates	—			—			—			—			(1		)	(1		)
Adjusted earnings	$	1,804		$	1,297		$	1,827		$	1,646		$	437		$	504
Computation of fixed charges:
Interest expense	$	33		$	54		$	56		$	49		$	266		$	441
Interest relating to lease guarantee of 50%-or-less-owned affiliates	—			—			—			—			—			3
Estimated interest portion of operating lease expense (1)	14			21			19			20			19			11
Fixed charges	$	47		$	75		$	75		$	69		$	285		$	455
Ratio of earnings to fixed charges	38.4		x	17.3		x	24.4		x	23.9		x	1.5		x	1.1		x

⁽¹⁾  Interest is estimated at 33% of rental charges, which considers industry benchmarks and assumption of average debt service cost over the assumed life of the related property.