I have a laptop from 2010. When it boots a recent Linux kernel, I see two error messages on the screen:
sd 0:0:0:0: [sda] Asking for cache data failed sd 0:0:0:0: [sda] Assuming drive cache: write through
The same message is displayed when I boot my another, even older laptop. I boot in quiet mode, which means no boot-up messages should normally appear, but these do. The hard drives in either seemingly work fine.
How serious is this message? Is this a sign of imminent hard disk failure? How do I make it go away?