Fair warning folks, if you write on your hard drives with a permanent marker, you may be blacking out the warranty. Take it from Scott (last name withheld) who wrote to The Consumerist complaining that his HDD warranty is now void for having written on it with a Sharpie.
Scott claims the serial numbers on his SATA hard drives weren't being recognized by Seagate's online RMA system and so he called them instead. He was then asked to provide a sales receipt and a photo of the drives.
"Thank you for the pictures," Seagate responded in an email. "Unfortunately, I am unable to read the serial number for either drive, and the writing on the one drive would void any warranty for that drive. If you can please send more clear pictures, I will do my best to have this issue resolved."
Scott didn't upload any pics to The Consumerist, but he insinuates the markings aren't any worse than the ones repair shops put on HDDs to keep from getting them mixed up.

This is not the actual drive Scott tried to RMA. It is, however, an old hard drive we had laying around, and though as some readers have pointed out we didn't use a Seagate unit for this shot, we can assure you that the marker is a genunie Sharpie.
Has something like this ever happened to you? Hit the jump and post your RMA stories, good or bad.