Hallo liste, habe in einem raid 1 system 2 identische platten laufen (hda/hdc). Fuer hdc finde ich folgendes im boot.msg : /dev/hdc: setting using_dma to 1 (on) setting xfermode to 69 (UltraDMA mode5) HDIO_DRIVE_CMD(setxfermode) failed: Input/output error using_dma = 1 (on) failed hdparm -i /dev/hdc : /dev/hdc: Model=SAMSUNG SP1614N, FwRev=TM100-24, SerialNo=S016J10X324718 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs } RawCHS=16383/16/63, TrkSize=34902, SectSize=554, ECCbytes=4 BuffType=DualPortCache, BuffSize=8192kB, MaxMultSect=16, MultSect=16 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455 IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 *udma2 udma3 udma4 udma5 AdvancedPM=no WriteCache=enabled Drive conforms to: (null): * signifies the current active mode hdparm -I /dev/hdc : /dev/hdc: Model=SAMSUNG SP1614N, FwRev=TM100-24, SerialNo=S016J10X324718 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs } RawCHS=16383/16/63, TrkSize=34902, SectSize=554, ECCbytes=4 BuffType=DualPortCache, BuffSize=8192kB, MaxMultSect=16, MultSect=16 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455 IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 *udma2 udma3 udma4 udma5 AdvancedPM=no WriteCache=enabled Drive conforms to: (null): * signifies the current active mode fkaserver:~ # hdparm -I /dev/hdc /dev/hdc: ATA device, with non-removable media Model Number: SAMSUNG SP1614N Serial Number: S016J10X324718 Firmware Revision: TM100-24 Standards: Supported: 7 6 5 4 Likely used: 7 Configuration: Logical max current cylinders 16383 65535 heads 16 1 sectors/track 63 63 -- CHS current addressable sectors: 4128705 LBA user addressable sectors: 268435455 LBA48 user addressable sectors: 312581808 device size with M = 1024*1024: 152627 MBytes device size with M = 1000*1000: 160041 MBytes (160 GB) Capabilities: LBA, IORDY(can be disabled) Queue depth: 1 Standby timer values: spec'd by Standard, no device specific minimum R/W multiple sector transfer: Max = 16 Current = 16 Recommended acoustic management value: 254, current value: 0 DMA: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4 udma5 Cycle time: min=120ns recommended=120ns PIO: pio0 pio1 pio2 pio3 pio4 Cycle time: no flow control=240ns IORDY flow control=120ns Commands/features: Enabled Supported: * READ BUFFER cmd * WRITE BUFFER cmd * Host Protected Area feature set * Look-ahead * Write cache * Power Management feature set Security Mode feature set * SMART feature set * FLUSH CACHE EXT command * Mandatory FLUSH CACHE command * Device Configuration Overlay feature set * 48-bit Address feature set Automatic Acoustic Management feature set SET MAX security extension * DOWNLOAD MICROCODE cmd * SMART self-test * SMART error logging Security: Master password revision code = 65534 supported not enabled not locked frozen not expired: security count supported: enhanced erase 56min for SECURITY ERASE UNIT. 56min for ENHANCED SECURITY ERASE UNIT. HW reset results: CBLID- above Vih Device num = 0 determined by the jumper Checksum: correct Der output fuer hda ist identisch. Udma5 wird supported. Was geht schief ? danke Franz