dmesg
- command used to display to CentOS Linux bootup messages.
- the boot iformation is stored at /var/log/messages
- the information recorded include hardware and kernel boot-up information
dmesg
| # dmesgLinux version 2.6.9-42.ELsmp (buildcentos@build-i386) (gcc version 3.4.6 20060404 (Red Hat 3.4.6 -3)) #1 SMP Sat Aug 12 09:39:11 CDT 2006 BIOS-provided physical RAM map: BIOS-e820: 0000000000000000 - 000000000009f800 (usable) BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved) BIOS-e820: 00000000000ca000 - 00000000000cc000 (reserved) BIOS-e820: 00000000000dc000 - 00000000000e4000 (reserved) BIOS-e820: 00000000000e8000 - 0000000000100000 (reserved) BIOS-e820: 0000000000100000 - 000000001fef0000 (usable) BIOS-e820: 000000001fef0000 - 000000001feff000 (ACPI data) BIOS-e820: 000000001feff000 - 000000001ff00000 (ACPI NVS) BIOS-e820: 000000001ff00000 - 0000000020000000 (usable) BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved) BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved) BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved) BIOS-e820: 00000000fffe0000 - 0000000100000000 (reserved) 0MB HIGHMEM available. 512MB LOWMEM available. found SMP MP-table at 000f69b0 NX (Execute Disable) protection: active On node 0 totalpages: 131072 DMA zone: 4096 pages, LIFO batch:1 |