Hi! Can someone help me with this? suse:~ # hdparm -Y /dev/sdb /dev/sdb: issuing sleep command HDIO_DRIVE_CMD(sleep) failed: Inappropriate ioctl for device Why can´t serial ata drives (wd3200js) be turned off or at least put in sleep mode with hdparm? Is it a lack of my kernel config or is hdparm the wrong command? Regards Peter -- Echte DSL-Flatrate dauerhaft für 0,- Euro*! "Feel free" mit GMX DSL! http://www.gmx.net/de/go/dsl - Linux-crypto: cryptography in and on the Linux system Archive: http://mail.nl.linux.org/linux-crypto/