Steven, Per our discussion on irc, here is more context surrounding the crash. The system boots fine with rt1 and the same .config. Freeing unused kernel memory: 244k freed Write protecting the kernel read-only data: 1156k Red Hat nash version 5.1.19.6 starting Mounting proc filesystem Mounting sysfs filesystem Creating /dev Creating initial device nodes Setting up hotplug. Creating block dUSB Universal Host Controller Interface driver v3.0 evice nodes. LoACPI: PCI Interrupt Link [LPUS] enabled at IRQ 5 ading uhci-hcd.kACPI: PCI Interrupt 0000:00:03.0[A] -> o module LoadinLink [LPUS] -> g ohci-hcd.ko moGSI 5 (level, low) -> IRQ 5 dule ohci_hcd 0000:00:03.0: OHCI Host Controller ohci_hcd 0000:00:03.0: new USB bus registered, assigned bus number 1 ohci_hcd 0000:00:03.0: irq 5, io mem 0xf3fff000 usb usb1: configuration #1 chosen from 1 choice hub 1-0:1.0: USB hub found hub 1-0:1.0: 2 ports detected ACPI: PCI Interrupt 0000:00:03.1[A] -> Link [LPUS] -> GSI 5 (level, low) -> IRQ 5 ohci_hcd 0000:00:03.1: OHCI Host Controller ohci_hcd 0000:00:03.1: new USB bus registered, assigned bus number 2 ohci_hcd 0000:00:03.1: irq 5, io mem 0xf3ffe000 usb usb2: configuration #1 chosen from 1 choice hub 2-0:1.0: USB hub found hub 2-0:1.0: 2 ports detected Loading ehci-hcdACPI: PCI Interrupt 0000:00:03.2[A] -> .ko module Link [LPUS] -> GSI 5 (level, low) -> IRQ 5 ehci_hcd 0000:00:03.2: EHCI Host Controller ehci_hcd 0000:00:03.2: new USB bus registered, assigned bus number 3 ehci_hcd 0000:00:03.2: irq 5, io mem 0xf3ffd000 ehci_hcd 0000:00:03.2: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004 usb usb3: configuration #1 chosen from 1 choice hub 3-0:1.0: USB hub found hub 3-0:1.0: 4 ports detected Loading jbd.ko module Loading ext3.ko module LSCSI subsystem initialized oading scsi_mod.ko module Loading sd_mod.ko module Waiting for driver initialization. usb 3-4: new high speed USB device using ehci_hcd and address 2 usb 3-4: configuration #1 chosen from 1 choice hub 3-4:1.0: USB hub found hub 3-4:1.0: 2 ports detected Scanning and configuring dmraid Kernel panic - not syncing: Attempted to kill init! supported device s Creating rootCall Trace: device. Mounti [<ffffffff802380f3>] panic+0xaf/0x169 ng root filesyst [<ffffffff8024558f>] blocking_notifier_call_chain+0xf/0x11 em. mount: coul [<ffffffff8023b733>] do_exit+0xb4/0x86a d not find files [<ffffffff8023bf78>] sys_exit_group+0x0/0x14 ystem '/dev/root [<ffffffff8023bf8a>] sys_exit_group+0x12/0x14 ' Setting up ot [<ffffffff8020be9e>] system_call+0x7e/0x83 her filesystems. Setting up new root fs setuproot: moving /dev failed: No such file or directory no fstab.sys, mounting internal defaults setuproot: error mounting /proc: No such file or directory setuproot: error mounting /sys: No such file or directory Switching to new root and running init. unmounting old /dev unmounting old /proc unmounting old /sys switchroot: mount failed: No such file or directory -- Darren Hart IBM Linux Technology Center Realtime Linux Team - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html