Hi, I have an installation of Fedora Core 5 on an Acer PC (Acer Power M6) with an Nforce 4 based chipset with integrated graphics. The motherboard has a single PATA controller on board with Master and Slave sockets, as well as 4 SATA headers on the board. My setup: PATA - No Drives installed SATA1 - 80GB SATA SATA2 - 320GB SATA SATA3 - 320GB SATA SATA4 - 320GB SATA What I am trying to do is install the OS on the 80GB drive, and then use the 3 320GB disks in a software RAID5 array for data storage. The problem I am having is that when the kernel starts to boot, and it probes the SATA disks, it always reports the error: ata4: SATA link up 1.5 Gbps (SStatus 113) ata4 is slow to respond, please be patient ata4 failed to respond (30 secs) scsi3 : sata_nv If I swap the disk around, the error is always with ata4. If I remove a disk, it then has an error with ata3. I have tried different cables, changing the disk positions, but I still get the same error. Below is a PCI listing: [root@habanero ~]# lspci 00:00.0 RAM memory: nVidia Corporation C51 Host Bridge (rev a2) 00:00.1 RAM memory: nVidia Corporation C51 Memory Controller 0 (rev a2) 00:00.2 RAM memory: nVidia Corporation C51 Memory Controller 1 (rev a2) 00:00.3 RAM memory: nVidia Corporation C51 Memory Controller 5 (rev a2) 00:00.4 RAM memory: nVidia Corporation C51 Memory Controller 4 (rev a2) 00:00.5 RAM memory: nVidia Corporation C51 Host Bridge (rev a2) 00:00.6 RAM memory: nVidia Corporation C51 Memory Controller 3 (rev a2) 00:00.7 RAM memory: nVidia Corporation C51 Memory Controller 2 (rev a2) 00:02.0 PCI bridge: nVidia Corporation C51 PCI Express Bridge (rev a1) 00:03.0 PCI bridge: nVidia Corporation C51 PCI Express Bridge (rev a1) 00:04.0 PCI bridge: nVidia Corporation C51 PCI Express Bridge (rev a1) 00:05.0 VGA compatible controller: nVidia Corporation C51 PCI Express Bridge (rev a2) 00:09.0 RAM memory: nVidia Corporation MCP51 Host Bridge (rev a2) 00:0a.0 ISA bridge: nVidia Corporation MCP51 LPC Bridge (rev a2) 00:0a.1 SMBus: nVidia Corporation MCP51 SMBus (rev a2) 00:0a.2 RAM memory: nVidia Corporation MCP51 Memory Controller 0 (rev a2) 00:0b.0 USB Controller: nVidia Corporation MCP51 USB Controller (rev a2) 00:0b.1 USB Controller: nVidia Corporation MCP51 USB Controller (rev a2) 00:0d.0 IDE interface: nVidia Corporation MCP51 IDE (rev a1) 00:0e.0 IDE interface: nVidia Corporation MCP51 Serial ATA Controller (rev a1) 00:0f.0 IDE interface: nVidia Corporation MCP51 Serial ATA Controller (rev a1) 00:10.0 PCI bridge: nVidia Corporation MCP51 PCI Bridge (rev a2) 00:10.2 Multimedia audio controller: nVidia Corporation MCP51 AC97 Audio Controller (rev a2) 00:14.0 Bridge: nVidia Corporation MCP51 Ethernet Controller (rev a1) 00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration 00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map 00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller 00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control Also, relevant lines from dmesg: [root@habanero ~]# dmesg | grep ata Bootdata ok (command line is ro root=/dev/VolGroup00/LogVol00 rhgb quiet) BIOS-e820: 000000007bef3000 - 000000007bf00000 (ACPI data) Memory: 1990924k/2030528k available (2385k kernel code, 39216k reserved, 1701k data, 200k init) ksign: Installing public key data Write protecting the kernel read-only data: 919k libata version 1.20 loaded. sata_nv 0000:00:0e.0: version 0.8 ata1: SATA max UDMA/133 cmd 0x9F0 ctl 0xBF2 bmdma 0xE000 irq 209 ata2: SATA max UDMA/133 cmd 0x970 ctl 0xB72 bmdma 0xE008 irq 209 ata1: SATA link up 3.0 Gbps (SStatus 123) ata1: dev 0 cfg 49:2f00 82:346b 83:7fe9 84:4773 85:3468 86:3c01 87:4763 88:407f ata1: dev 0 ATA-7, max UDMA/133, 160836480 sectors: LBA48 ata1: dev 0 configured for UDMA/133 scsi0 : sata_nv ata2: SATA link up 1.5 Gbps (SStatus 113) ata2: dev 0 cfg 49:2f00 82:346b 83:7d01 84:4023 85:3468 86:3c01 87:4023 88:407f ata2: dev 0 ATA-7, max UDMA/133, 625142448 sectors: LBA48 ata2: dev 0 configured for UDMA/133 scsi1 : sata_nv ata3: SATA max UDMA/133 cmd 0x9E0 ctl 0xBE2 bmdma 0xCC00 irq 217 ata4: SATA max UDMA/133 cmd 0x960 ctl 0xB62 bmdma 0xCC08 irq 217 ata3: SATA link up 1.5 Gbps (SStatus 113) ata3: dev 0 cfg 49:2f00 82:346b 83:7d01 84:4023 85:3468 86:3c01 87:4023 88:407f ata3: dev 0 ATA-7, max UDMA/133, 625142448 sectors: LBA48 ata3: dev 0 configured for UDMA/133 scsi2 : sata_nv ata4: SATA link up 1.5 Gbps (SStatus 113) ata4 is slow to respond, please be patient ata4 failed to respond (30 secs) scsi3 : sata_nv EXT3-fs: mounted filesystem with ordered data mode. EXT3-fs: mounted filesystem with ordered data mode. What I would like to know, has anyone else come across this, and if so, how did you fix it? Thanks, Phil