UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K/A

(Amendment No. 2)

(Mark one)

For the fiscal year ended November 30, 2008

or

For the transition period from                      to                     

Commission file number 000-23108 (issuing entity)

Commission file number 033-54804 (depositor and sponsor)

DISCOVER CARD MASTER TRUST I

(Exact name of issuing entity as specified in its charter)

DISCOVER BANK

(Exact name of depositor and sponsor as specified in its charter)

Depositor’s telephone number, including area code: (302) 323-7434

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act:

Series 1996-4:

Floating Rate Class A Credit Card Pass-Through Certificates

Floating Rate Class B Credit Card Pass-Through Certificates

Series 2003-3:

Floating Rate Class A Credit Card Pass-Through Certificates

Floating Rate Class B Credit Card Pass-Through Certificates

Series 2003-4:

Floating Rate Class A, Subseries 2 Credit Card Pass-Through Certificates

Floating Rate Class B, Subseries 2 Credit Card Pass-Through Certificates

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  ¨    No  x

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  ¨    No  x

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.    x  

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company (as defined in Rule 12b-2 of the Exchange Act).

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    Yes  ¨    No  x

Registrant has no voting or non-voting common equity outstanding held by non-affiliates.

EXPLANATORY NOTE

Discover Card Master Trust I (the “Registrant”) Discover is filing this Amendment No. 2 to its Annual Report on Form 10-K/A solely to cause Exhibit 10.3 (Services Agreement, effective as of September 30, 2008, between DFS Services LLC and BancTec, Inc.) (the “Exhibit”) to be deemed to be removed from the Registrant’s Annual Report on Form 10-K for the fiscal year ended November 30, 2008 filed with the Securities and Exchange Commission (the “SEC”) on February 19, 2009 and Amendment No. 1 to such Annual Report on Form 10-K/A filed with the SEC on June 29, 2009. Upon further review of the issue, the Registrant, its counsel and BancTec, Inc. have determined that the Exhibit does not constitute a material agreement of the Registrant, should not have been filed, and should be deemed to be removed in its entirety. Except as noted herein, the Registrant’s Annual Report on Form 10-K for the fiscal year ended November 30, 2008 remains as originally filed with the SEC on February 19, 2008. This Amendment No. 2 does not reflect any subsequent information or events other than the changes referred to above.

PART IV

Item 15. Exhibits and Financial Statement Schedules

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SIGNATURES

Pursuant to the requirements of Section 13 of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

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