Comment 7 for bug 26119

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.