Seagate ST9550AG, ST9655AG manual Compatibility notes

ST9655 Family Installation Guide, Rev. A 17

Compatibility notes

∙The ST9655 family drives conform to the ATA interface speci- fications. The host system BIOS must provide support for the ATA interface command set. For a detailed description of the ATA commands implemented by these drives, see the Sea- gate ST9655 Family Product Manual and the Seagate ATA Interface Reference Manual.

∙In accordance with ATA specifications, the system BIOS must reset any emulation/translation parameters after a hard reset.

∙In some configurations, a ST9655 family drive may supply up to 16 bytes of error correction code (ECC) with the Read Long and Write Long commands. Depending on the drive type, your system BIOS may look for 4 bytes of ECC. If your system BIOS expects 4 bytes of ECC and the drive supplies a different number of bytes, some drive diagnostic programs may fail, typically resulting in time-out errors. Consult your computer documentation or call your computer dealer or manufacturer for information on configuring your computer to receive more than 4 bytes of ECC.

∙Some older drive diagnostic programs may incorrectly report an ECC-detection failure when analyzing an ST9655 family drive. This occurs because the drive hardware corrects the data automatically, avoiding the error rather than reporting it. Such a report does not indicate a drive malfunction.