我正在运行 FreeBSD 10.0-RELEASE。
在引导设备探测期间，有两次 30 秒的暂停。与此相关的输出是
# dmesg
...
(aprobe0:ata0:0:1:0): ATAPI_IDENTIFY. ACB: a1 00 00 00 00 40 00 00 00 00 00 00
(aprobe0:ata0:0:1:0): CAM status: Command timeout
(aprobe0:ata0:0:1:0): Error 5, Retry was blocked
run_interrupt_driven_hooks: still waiting after 60 seconds for xpt_config
(aprobe0:ata0:0:1:0): ATAPI_IDENTIFY. ACB: a1 00 00 00 00 40 00 00 00 00 00 00
(aprobe0:ata0:0:1:0): CAM status: Command timeout
(aprobe0:ata0:0:1:0): Error 5, Retry was blocked
...
我对这个操作系统很陌生，但这是否意味着系统正在检测设备但无法弄清楚它是什么？除了基本的必需品外，我什么都没有 - 硬盘驱动器和光驱，并通过以下方式确认：
# camcontrol devlist
<MATSHITA DVD-RAM UJ-841S 1.00> …