I installed SuSE 9.0 for x86_64 on the following box but I'm having boot problems when the machine is loaded with 8GB of RAM: Dual Opteron 248 8GB RAM (in 8 1GB sticks) Tyan K8W (S2885) - BIOS Rev 1.02 Adaptec 29320 If I take out half the RAM so that I only have 4GB total in the system, everything works fine. However, if the full 8GB are in I get somewhat random errors (memory corruption?): Run 1: ------------------------------------------------------------------------ RAMDISK: Compressed image found at block 0 VFS: Mounted root (ext2 filesystem). linuxrc[12]: segfault at 00000000ffffff99 rip 000000000040c428 rsp 0000007fbffff860 error 6 VFS: Cannot open root device "sda2" or 08:02 Please append a correct "root=" boot option Kernel panic: VFS: Unable to mount root fs on 08:02 ------------------------------------------------------------------------ Run 2: ------------------------------------------------------------------------ RAMDISK: Compressed image found at block 0 crc errorVFS: Cannot open root device "sda2" or 08:02 Please append a correct "root=" boot option Kernel panic: VFS: Unable to mount root fs on 08:02 ------------------------------------------------------------------------ Run 3: ------------------------------------------------------------------------ RAMDISK: Compressed image found at block 0 NMI Watchdog detected LOCKUP on CPU1, eip ffffffff8012423c, registers: CPU 1 Pid: 1, comm: swapper Not tainted RIP: 0010:[<ffffffff8012423c>[{.text.lock.fork+27} RSP: 0000:00000100ca8f1d58 EFLAGS: 00000086 RAX: 0000000000000000 RBX: 00000101ffd11e38 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 00000100ca8f1d68 RDI: 00000101ffd11e40 RBP: 00000100ca8f0000 R08: ffffffff803c7b00 R09: 00000101ffd12e00 R10: 0000000000000000 R11: 0000000080000000 R12: 00000101ffd11e40 R13: 00000100ca8f1d68 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffffffff804bbb00(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 0000000000000000 CR3: 00000000ca902000 CR4: 00000000000006e0 Process swapper (pid: 1, stackpage=100ca8f1000) Stack: 00000100ca8f1d58 0000000000000000 Call Trace: Code: f3 90 7f f9 e9 e7 e5 ff ff 80 3f 00 f3 90 7e f9 e9 18 e6 ff console shuts up ... ------------------------------------------------------------------------ I've tried installing on a Rioworks Arima HDAMA machine with 8GB RAM and the same SCSI card, and it worked fine. So I'm thinking that there's a driver issue with the Tyan board. BTW, I have a sister machine with the same Tyan board, and it also experiences the same problem. Bryan -- Aspen Systems, Inc. | http://www.aspsys.com/ Production Engineer | Phone: (303)431-4606 bryans@aspsys.com | Fax: (303)431-7196