UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K/A

(Amendment No. 1)

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): February 15, 2013 (February 5, 2013)

Dell Inc.

(Exact name of registrant as specified in its charter)

One Dell Way, Round Rock, Texas 78682

(Address of principal executive offices) (Zip Code)

(Registrant’s telephone number, including area code): (800) 289-3355

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Explanatory Note

This Amendment No. 1 to the Current Report on Form 8-K (the “Amendment”) is being filed to correct certain mistakes contained in Exhibit 10.1 (Voting and Support Agreement) to the Current Report on Form 8-K filed on February 6, 2013 (the “Original 8-K”). Item 1.01 of the Original 8-K is amended below to incorporate by reference the corrected Voting and Support Agreement. Item 9.01 of the Original 8-K is amended below to reference the corrected Voting and Support Agreement.

Except as described above, the Amendment does not modify or update the disclosures presented in, or exhibits to, the Original 8-K in any way. Those sections of the Original 8-K that are unaffected by the Amendment are not included herein. The Amendment continues to speak as of the date of the Original 8-K. Furthermore, the Amendment does not reflect events occurring after the filing of the Original 8-K. Accordingly, the Amendment should be read in conjunction with the Original 8-K.

Item 1.01 - Entry into Material Definitive Agreement.

Item 1.01 of the Original 8-K is amended to incorporate by reference the corrected Voting and Support Agreement which is attached as exhibit 10.1 to this Amendment.

Additional Information and Where to Find It

This filing may be deemed solicitation material in respect of the proposed acquisition of the Company by Mr. Dell and Silver Lake Partners and their respective affiliates. In connection with the proposed merger transaction, the Company will file with the SEC and furnish to the Company’s stockholders a proxy statement and other relevant documents. BEFORE MAKING ANY VOTING DECISION, THE COMPANY’S STOCKHOLDERS ARE URGED TO READ THE PROXY STATEMENT IN ITS ENTIRETY WHEN IT BECOMES AVAILABLE AND ANY OTHER DOCUMENTS TO BE FILED WITH THE SEC IN CONNECTION WITH THE PROPOSED MERGER OR INCORPORATED BY REFERENCE IN THE PROXY STATEMENT BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED MERGER AND THE PARTIES TO THE MERGER. The Company’s stockholders will be able to obtain a free copy of documents filed with the SEC at the SEC’s website at http://www.sec.gov. In addition, the Company’s stockholders may obtain a free copy of the Company’s filings with the SEC from the Company’s website at http://content.dell.com/us/en/corp/investor-financial-reporting.aspx or by directing a request to: Dell Inc. One Dell Way, Round Rock, Texas 78682, Attn: Investor Relations, (512) 728-7800, investor_relations@dell.com.

The directors, executive officers and certain other members of management and employees of the Company may be deemed “participants” in the solicitation of proxies from stockholders of the Company in favor of the proposed merger. Information regarding the persons who may, under the rules of the SEC, be considered participants in the solicitation of the stockholders of the Company in connection with the proposed merger will be set forth in the proxy statement and the other relevant documents to be filed with the SEC. You can find information about the Company’s executive officers and directors in its Annual Report on Form 10-K for the fiscal year ended February 3, 2012 and in its definitive proxy statement filed with the SEC on Schedule 14A on May 24, 2012.

Forward-looking Statements

Statements in this Current Report on Form 8-K and the exhibits furnished or filed herewith that relate to future results and events are forward-looking statements based on Dell’s current

expectations. Actual results and events in future periods may differ materially from those expressed or implied by these forward-looking statements because of a number of risks, uncertainties and other factors. All statements other than statements of historical fact are statements that could be deemed forward-looking statements. Risks, uncertainties and assumptions include, but are not limited to: (1) the occurrence of any event, change or other circumstances that could give rise to the termination of the merger agreement; (2) the inability to complete the proposed merger due to the failure to obtain stockholder approval for the proposed merger or the failure to satisfy other conditions to completion of the proposed merger, including that a governmental entity may prohibit, delay or refuse to grant approval for the consummation of the transaction; (3) the failure to obtain the necessary financing arrangements set forth in the debt and equity commitment letters and the securities purchase agreement delivered pursuant to the merger agreement; (4) risks related to disruption of management’s attention from the Company’s ongoing business operations due to the transaction; and (5) the effect of the announcement of the proposed merger on the Company’s relationships with its customers, suppliers, operating results and business generally.

Actual results may differ materially from those indicated by such forward-looking statements. In addition, the forward-looking statements represent the Company’s views as of the date on which such statements were made. The Company anticipates that subsequent events and developments will cause its views to change. However, although the Company may elect to update these forward-looking statements at some point in the future, it specifically disclaims any obligation to do so. These forward-looking statements should not be relied upon as representing the Company’s views as of any date subsequent to the date hereof. Additional factors that may cause results to differ materially from those described in the forward-looking statements are set forth in the Company’s Annual Report on Form 10-K for the fiscal year ended February 3, 2012, which was filed with the SEC on March 13, 2012, under the heading “Item 1A—Risk Factors,” and in subsequent reports on Forms 10-Q and 8-K filed with the SEC by the Company.

Item 9.01 – Financial Statements and Exhibits.

(d) Exhibits

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

EXHIBIT INDEX