Frequently Asked Questions

Q6: How to format and mount more than 2 TB system in FreeBSD?
Ans: Assume the more than 2TB volume is in the second raid controller, the /dev/da1, follow these steps:

gpt create -f /dev/da1
gpt show /dev/da1
gpt add /dev/da1
newfs /dev/da1p1
mount /dev/da1p1 /mnt

finally add the new volume to /etc/fstab.

Q7: My system has build-in ATI ES1000 VGA, and Fedora Core 5 is installed successfully, but the X is not working.?
Ans: After installation of Fedora Core 5, boot into the text mode, (run level 3) and vi /etc/X11/xorg.conf, and commenting out "Load "dri"".

Q8: Incorrect CPU Speed. My system is dual AMD 2.2 Ghz, but after install FC4 or CentOS x86_64, it shows my cpu speed is 1000 Mhz.?
Ans: Once AMD PowerNow is enabled, the driver for powernow-k8 is loaded, and then you can set the cpu frequency. Type "cpufreq-info", it tells you that the cpu range is from 1000MHZ to 2.2 GHZ (min to max), and the cpufreq governor is userspace, which use the minimum cpu speed. You need to change the governor to performance in order to get the maximum cpu speed. Type "cpufreq-set -c 0 -g performance" to set it for cpu 0, and type "cpufreq-set -c 1 -g performance" to set it for the second cpu. But next time you reboot the system, this setting will gone, so you need to add these two commands to /etc/rc.local.
You can enter CMOS, Advanced, AMD PowerNow configuration, and disable the PowerNow feature. but these messages will appear in dmesg: powernow-k8: MP systems not supported by PSB BIOS structure.

Q9: I want to install CentOS to my system, however, I can only install the 32 bit version, the 64 bit version causes kernel panics, I tried 4.0 and 4.2, still the same problem. My system is using Supermicro H8DCE MB, two AMD OSA 244 CPUs, 8 GB RAM and 8 WD 250 GB HDs.?
Ans: To solve ths problem, you need to enter CMOS, under Boot/OS Installation, enable "64 bit Linux 2.6.9", save and exit.

Q10: I have 2 3Ware controllers in my computer. After I install 3dm2, it shows these messages in the Alarms, "Primary DCB read error" in some of the Hard Disks.?
Ans: The Hard disks are fine, the problem is that all the Hard disks are spined up during boot up at the same time. To solve this problem, visit: http://www.3ware.com/kb/article.aspx?id=12072 and download the tw_cdiag file to enable random spin up for the Hard disks.