Dann nenn doch mal bitte den Paragrafen.

OK, Du hast Recht. Was ich mit "Garantie" meinte heisst Gewährleistung und das ist die gesetzlich vorgeschriebene Leistung der Hersteller

Ich bin halt kein Rechtsanwalt...

Mit anderen Worten: Spielst Du ein anderes Betriebssystem auf den Rechner (abgesehen von Updates), so erlischt in der Tat die freiwillige Garantie Apples, die nur auf das Gesamtsystem als den Verbund von Rechner und vorinstalliertem Betriebsystem gewährt wurde.

e. Limitations. The Plan does not cover:
(i) Installation, removal or disposal of the Covered Equipment, or installation, removal, repair, or maintenance of non-Covered Equipment (including accessories, attachments, or other devices such as external modems) or electrical service external to the Covered Equipment;
(ii) Damage to the Covered Equipment caused by accident, abuse, neglect, misuse (including faulty installation, repair, or maintenance by anyone other than Apple or an Apple Authorized Service Provider), unauthorized modification, extreme environment (including extreme temperature or humidity), extreme physical or electrical stress or interference, fluctuation or surges of electrical power, lightning, static electricity, fire, acts of God or other external causes;
(iii) Covered Equipment with a serial number that has been altered, defaced or removed;
(iv) Problems caused by a device that is not the Covered Equipment, including equipment that is not Apple-branded, whether or not purchased at the same time as the Covered Equipment;
(v) Service necessary to comply with the regulations of any government body or agency arising after the date of this Plan;
(vi) The provision of replacement equipment during the period when the Covered Equipment is being repaired;
(vii) Covered Equipment that has been lost or stolen. This Plan only covers Covered Equipment that is returned to Apple in its entirety;
(viii) Cosmetic damage to the Covered Equipment (including but not limited to scratches, dents and broken plastic on ports);
(ix) Consumable parts, such as batteries, unless damage has occurred due to a defect in materials and workmanship;
(x) Preventative maintenance on the Covered Equipment;
(xi) Damage to, or loss of any software or data residing or recorded in the Covered Equipment. When providing repair or replacement service, Apple will use reasonable efforts to reinstall the Covered Equipment’s original software configuration and subsequent update releases, but will not provide any recovery or transfer of software or data contained on the serviced unit not originally included in the Covered Equipment;
(xii) Defects caused by normal wear and tear or otherwise due to normal aging of the product; and
(xiii) Any technical support of any kind.