I have to build a server with the following configuration: Athlon slot A 550 Mhz Matherboard Asus K7V ( Bus Ide 66) (chipset VIA KX133 - VT8371) A CD-Rom installed as slave on primary ide channel (VIA chipset) An external raid card Promise Fasttrack 100 TX2 ( Chipset Promise 20270 Rev. 2.0 ) Two ethernet card 10/100 I have istalled the version 7.2 of RED HAT. This version =============== /proc/version Linux version 2.4.7-10 (bhcompile@xxxxxxxxxxxxxxxxxxxxxxxxxx) gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-98)) #1 Thu Sep 6 16:46:36 EDT 2001 ================================ I have defined the raid1 inside of promise boot utility ( fastbuild Utility 1.32) with two Hard disk Maxtor 20Gb ATA100 7200RPM. I have one disk for channel. The red hat installation find the promise card ================/proc/pci PCI devices found: Bus 0, device 0, function 0: Host bridge: VIA Technologies, Inc. VT8371 [KX133] (rev 2). Prefetchable 32 bit memory at 0xe4000000 [0xe7ffffff]. Bus 0, device 1, function 0: PCI bridge: VIA Technologies, Inc. VT82C598/694x [Apollo MVP3/Pro133x AGP] (rev 0). Master Capable. No bursts. Min Gnt=8. Bus 0, device 4, function 0: ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 33). Bus 0, device 4, function 1: IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 16). Master Capable. Latency=32. I/O at 0xd800 [0xd80f]. Bus 0, device 4, function 2: USB Controller: VIA Technologies, Inc. UHCI USB (rev 16). IRQ 9. Master Capable. Latency=32. I/O at 0xd400 [0xd41f]. Bus 0, device 4, function 3: USB Controller: VIA Technologies, Inc. UHCI USB (#2) (rev 16). IRQ 9. Master Capable. Latency=32. I/O at 0xd000 [0xd01f]. Bus 0, device 4, function 4: Host bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 48). IRQ 9. Bus 0, device 4, function 5: Multimedia audio controller: VIA Technologies, Inc. AC97 Audio Controller (rev 32). IRQ 5. I/O at 0xb800 [0xb8ff]. I/O at 0xb400 [0xb403]. I/O at 0xb000 [0xb003]. Bus 0, device 10, function 0: Ethernet controller: 3Com Corporation 3c905C-TX [Fast Etherlink] (rev 48). IRQ 5. Master Capable. Latency=32. Min Gnt=10.Max Lat=10. I/O at 0xa400 [0xa47f]. Non-prefetchable 32 bit memory at 0xe0000000 [0xe000007f]. Bus 0, device 11, function 0: RAID bus controller: PCI device 105a:6268 (Promise Technology, Inc.) (rev 2). IRQ 10. Master Capable. Latency=32. Min Gnt=4.Max Lat=18. I/O at 0xa000 [0xa007]. I/O at 0x9800 [0x9803]. I/O at 0x9400 [0x9407]. I/O at 0x9000 [0x9003]. I/O at 0x8800 [0x880f]. Non-prefetchable 32 bit memory at 0xdf800000 [0xdf80ffff]. Bus 0, device 12, function 0: Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139 (rev 16). IRQ 11. Master Capable. Latency=32. Min Gnt=32.Max Lat=64. I/O at 0x8400 [0x84ff]. Non-prefetchable 32 bit memory at 0xdf000000 [0xdf0000ff]. Bus 1, device 0, function 0: VGA compatible controller: Matrox Graphics, Inc. MGA G400 AGP (rev 3). IRQ 11. Master Capable. Latency=64. Min Gnt=16.Max Lat=32. Prefetchable 32 bit memory at 0xe2000000 [0xe3ffffff]. Non-prefetchable 32 bit memory at 0xe1000000 [0xe1003fff]. Non-prefetchable 32 bit memory at 0xe0800000 [0xe0ffffff]. ================== but I have two devices 33 ide2 34 ide3 labelled hde(ide2),hdf(ide3) cd-rom is labelled hdb ================== /proc/devices Character devices: 1 mem 2 pty 3 ttyp 4 ttyS 5 cua 7 vcs 10 misc 14 sound 29 fb 36 netlink 128 ptm 129 ptm 130 ptm 131 ptm 132 ptm 133 ptm 134 ptm 135 ptm 136 pts 137 pts 138 pts 139 pts 140 pts 141 pts 142 pts 143 pts 162 raw 180 usb 226 drm Block devices: 1 ramdisk 2 fd 3 ide0 9 md 33 ide2 34 ide3 ==================== I'm no able to have from booting only one device ( two hard disk mirrored). The fun think is that I'm able to make the software raid between the two hard disk "hde" and "hdf". I don't want to imagine what's happen if I test this solution. The promise software FastTrak Series Linux Driver Version 1.2.0.9 Installation Note for Redhat Linux [07/04/2001] used during installation don't work... the pcitable looklike correct: 0x105a 0x6268 "ft" "Promise|FastTrak 100 TX2" Conclusion.... How to build an array disk level 1 with pci card promise fasttrack 100 tx2 on linux????? Thank you to all for my english Paolo Bernardelli poliedrapb@xxxxxx