A lot of thanks to Gautam and Manuel although, there are some strange outputs (see below), performance is now as usaual :-) hdparm -Tt /dev/sda1 /dev/sda1: Timing cached reads: 2860 MB in 2.00 seconds = 1429.91 MB/sec HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl for device Timing buffered disk reads: 112 MB in 3.01 seconds = 37.18 MB/sec HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl for device Manuel Pelayo wrote: >Le dimanche 02 octobre 2005 à 13:13 +0200, Michael Nischt a écrit : > > >>I've got the same problem, the harddisk in my dell notebook (precision >>M70) extremly slowed down since the kernel update to 2.6.13-1.1526_FC4 - >>it became absolutly impossible to work on this computer: >> >>/dev/hda: >> Timing cached reads: 2784 MB in 2.00 seconds = 1391.91 MB/sec >> Timing buffered disk reads: 6 MB in 3.03 seconds = 1.98 MB/sec >> >>Furthermore, I noticed that the harddrive formerly was /dev/sda1 and now >>is /dev/hda1, which is probably the reason but I don't know how to fix >>this. I hope there is an easy way, because I'm not that familiar with >>linux to go into compiling the kernel. >> >> > >I've same problem too. >My notebook is a IBM Thinkpad T43. >I've solve this when I add 'ide0=noprobe' in the kernel line of >the /etc/grub.conf file. Here is the diff : > >--- grub.conf.old 2005-10-02 16:41:55.000000000 +0200 >+++ grub.conf 2005-10-02 17:17:56.000000000 +0200 >@@ -14,7 +14,7 @@ > password --md5 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX > title Fedora Core (2.6.13-1.1526_FC4) > root (hd0,0) >- kernel /vmlinuz-2.6.13-1.1526_FC4 ro root=LABEL=/ vga=0x303 rhgb >quiet >+ kernel /vmlinuz-2.6.13-1.1526_FC4 ro root=LABEL=/ vga=0x303 >ide0=noprobe rhgb quiet > initrd /initrd-2.6.13-1.1526_FC4.img > title Fedora Core (2.6.12-1.1456_FC4) > root (hd0,0) > > >