This work for me: The Jerone's patch was the soluction for my eSATA external hard disk.
!!!! So changing /lib/udev/rules.d/85-hdparm.rules to: ACTION=="add", SUBSYSTEM=="block", KERNEL=="[sh]d[a-z]", \ ENV{ID_PATH}!="pci-*-ieee1394-*|pci-*-usb-*", \ RUN+="/lib/udev/hdparm" !!! but the problem continue with my USB external disk I have found the solution for this problem by putting the parameter acpi=off on the end of the kernel options. /boot/grub/grub.cfg menuentry "Ubuntu 10.04 LTS (10.04) (on /dev/sdb5)" { insmod ext2 set root='(hd1,5)' search --no-floppy --fs-uuid --set de5a18c4-1a61-4f0b-aab0-941623a0cb01 linux /boot/vmlinuz-2.6.32-22-generic-pae root=/dev/sdb5 ro quiet splash acpi=off initrd /boot/initrd.img-2.6.32-22-generic-pae } https://bugs.launchpad.net/ubuntu/+bug/575646/comments/6 [0:0:0:0] disk WDC WD16 00JS-22MHB0 1C03 /dev/sdc [1:0:0:0] disk ATA WDC WD3200BEKT-6 12.0 /dev/sda [2:0:0:0] cd/dvd hp CDDVDW TS-L633M 0301 /dev/sr0 [6:0:0:0] disk ATA ST3500320AS SD15 /dev/sdb -- hdparm's IDENTIFY DEVICE command breaks firewire devices https://bugs.launchpad.net/bugs/548513 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs