https://bugzilla.kernel.org/show_bug.cgi?id=219362 --- Comment #8 from Tomas Mudrunka (harviecz@xxxxxxxxx) --- And it's not just about "sync" of the harddrive. It's about stopping it wear leveling operations. Modern storages DO shuffle data between blocks even when you don't write anything to them, power loss will cause data loss even on read-only systems. (users of raspberry pi with read-only SD cards can tell you lots of stories on this topic). Therefore we need to signal the device in advance we're going to remove its power. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.