This problem also happens in edgy with a 2.6.17 kernel. I tried upgrading from Dapper to solve the problem but to no avail. The hard disk is a Seagate 40GB model. I had this problem before in Debian Sarge after upgrading from a 2.4 series kernel to a 2.6.15 kernel in Debian. It seems some kind of kernel issue. I've seen in forums similar issues with Fedora distros.
As a workaround I enable dma with hdparm after booting and the performance is good. It only affects the booting process although it is annoying, it adds quite a bit of time to the booting process, specially after the kernel starts trying repetitively to access the "phantom" sector until it disables dma. -- Possible fake host protected area (hpa) detected in ide drive causing SectorIdNotFound https://launchpad.net/bugs/26119 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
