Friday, December 12, 2014

IPMI command (ipmitool tool)


What is IPMI
IPMI is an abbreviation for Intelligent Platform Management Interface.

The Intelligent Platform Management Interface (IPMI) is a set of computer interface specifications for an autonomous computer subsystem that provides management and monitoring capabilities independently of the host system's CPU, firmware (BIOS or UEFI) and operating system. IPMI defines a set of interfaces used by system administrators for out-of-band management of computer systems and monitoring of their operation. For example, IPMI provides a way to manage a computer that may be powered off or otherwise unresponsive by using a network connection to the hardware rather than to an operating system or login shell.
[reference: http://en.wikipedia.org/wiki/Intelligent_Platform_Management_Interface]


Basely IPMI this tool is to control your bmc ip address, which can read your sensor(such as the component's temperature, battery, and so on), an power consumption types of setting.
A server mean it will stay on for many days or year without shut down. We need this ipmi tool is to see if this server hang, we will be able to debug what happen.

ipmitool can let you server to power or or off. But manly ipmitool is used to fit our bmc addres.

What are come of the useful command to used:

See our power status: 
 ipmitool -I lanplus -H "BMC IP ADDRESS"  -U USERID -P PASSWORD chassis power status

Power on you server
 ipmitool -I lanplus -H "BMC IP ADDRESS"  -U USERID -P PASSWORD chassis power [on/off]

SOL(serial over lan)
SOL is like console redirection, you don't need a debug card or a console port, you can used your lan to see you internal status.

If you don't have a vga card you aren't able to see you host status right?
No, there are three way you can see if you don't have vga card:
by console redirection
by console debug card
by SOL

 ipmitool -I lanplus -H  "BMC IP ADDRESS" -U USERID -P PASSWORD sol activate

DEBUG USED with BMC COMAMND
Some debug ipmitool to used:
If your SUT/DUT(client pc) hang, please execute this command to see what happen, or see previous stop over where .
Need to open two terminal: one connect sol, another execute command raw 0x3c 0x5c

for example:
 ipmitool -I lanplus -H  "BMC IP ADDRESS" -U USERID -P PASSWORD sol activate
and
 ipmitool -I lanplus -H  "BMC IP ADDRESS" -U USERID -P PASSWORD  raw 0x3c 0x5c

See bmc dhcp ip had been release or gone
prerequisite: OS ip must be ping-able, else this is unable to verify
remote to OS by telnet or ssh, and execute this command: ipmitool lan print
reset bmc, see reset bmc command as below.

Reset bmc  by this command
ipmitool raw 0x3c 0x5a

TO BE UPDATED......
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Set up dhcp linux


Set up dhcp under linux:


What is a dhcp server 
I will used my paraphrase in my own word. There are many information that you can get from internet.

Basely a dhcp server is a dynamic ip(internet protocol)  address that will assign to the host. Everyone today used internet, we need to connect lan cable to a hub, switch or etc. These hub switch might have a dhcp server in the backbone or in front of them, else it will not be able to assign ip to the host.

A ip address will have a unique ip address, in other word no one is going to have a same ip address.
So the fundamental concept of a dhcp is like this:
1. we set up a dhcp server( linux or window]
2. we prepare a switch , or a hub, and connected to dhcp server.
3 Right now if any host is being connected to the hub or switch, will have a dynamic ip.

I will teach you how to mange an effective ip address for user to used. There are two difference ways of mange dhcp. One is to set a static ip address by an interface mac address, and two is by rang an ip address.


Set up particular pc ip address into static ip. 
If you have many host or more than 10 HOST PC or Server, it is hard to control or manage a dhcp. So we will needed to add a particular interface mac and set a static ip, this will be more easier to know which pc is which.

host ASER_HOSTA {
  hardware ethernet AB:AA:BB:CC:DD:EE;
  fixed-address 192.168.2.100;
}

host ASUS_HOSTB {
  hardware ethernet CD:AA:BB:CC:DD:EE;
  fixed-address 192.168.2.101;
}


Set up a dhcp range
If you need to set up a dhcp server, you can add or not add a rang. I will prefer you add a rang between 101~200, this mean ip will be between 101 and 200. Again this will be easier to manage you dhcp server.

subnet 192.168.1.0 netmask 255.255.255.0 {
range 192.168.1.101 192.168.1.200;
 option subnet-mask 255.255.255.0;
}


Set up a dhcpv6 range

default-lease-time 600;
max-lease-time 7200;
log-facility local7;
subnet6 2001:db8:0:1::/64
{
#Range for clients
range6 2001:db8:0:1::129 2001:db8:0:1::254;
}

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Wednesday, November 12, 2014

PXE Setup

PXE legacy/uefi NFS[RHEL6.4]
PXE legacy/uefi HTTP/FTP[RHEL6.4]
Set up Pxe Server with RHEL7.X/ Centos7.X HTTP

 Set up Pxe Server with kicstart automation (uefi /legacy ) NFS

introduce folder and create folder: 
[root@localhost ~]# cd /
[root@localhost /]# mkdir /install/nfs_share
[root@localhost /]# mkdir /install/tftpboot

/install/nfs_share  ==>put kicstart file, and out centos images
/install/tftpboot ==>put your pxe menu page

1.Disable Firewall:
[root@localhost ~]# service iptables stop

2.Disable SELinux
[root@localhost ~]# setenforce 0

3. copy cdrom file from dvd rom into desktop
[root@localhost ~]# cp –av /media/CentOS_6.4_Final /*

4.Convert centos images folder into iso file
command: mkisofs –r –o [filename].iso /[file destination/
[root@localhost ~]# mkisofs –r –o Centos_6.4.iso / CentOS_6.4_Final

5. Set your ip address.
Eth0 set 192.168.2.1, mask: 24, gateway: 192.168.2.254
Eth1: set 192.168.1.1, mask: 24, gateway: 192.168.1.254
Reboot DUT

6.DHCP service
[root@localhost ~]#vi /etc/sysconfig/dhcpd
DHCPD_INTERFACE="et01 eth1"
[root@localhost ~]# vi /etc/dhcp/dhcpd.conf

dhcpd.conf: 

ignore client-updates;
ddns-update-style interim;
default-lease-time 259200;
max-lease-time 518400;
option arch code 93 = unsigned integer 16;
next-server 192.168.2.1;
subnet 192.168.2.0 netmask 255.255.255.0 {
range dynamic-bootp 192.168.2.2 192.168.2.200;
if option arch = 00:07{

 #for uefi
filename "BOOTX64.efi";
}else{

 #for legacy
filename "pxelinux.0";
}
}

7. TFTP service
[root@localhost ~]# vim /etc/xinetd.d/tftp

tftp:
service tftp
{
disable = no
socket_type = dgram
protocol = udp
wait = yes
user = root
server = /usr/sbin/in.tftpd
server_args = -s /install/tftpboot
per_source = 11
cps = 100 2
flags = IPv4
}

8. Create tftpboot directory

[root@localhost tftpboot]# chcon --reference /var/lib/tftpboot /install/tftpboot
[root@localhost /]# cp /usr/share/syslinux/menu.c32 /usr/share/syslinux/vesamenu.c32 /usr/share/syslinux/pxelinux.0 /install/tftpboot/
[root@localhost /]# mkdir /install/tftpboot/pxelinux.cfg
[root@localhost /]# mount -o loop Centos_6.4.iso /mnt/
[root@localhost /]# mkdir -p /install/tftpboot/kernel/centos6.4
[root@localhost /]# cp /mnt/isolinux/vmlinuz /install/tftpboot/kernel/centos6.4
[root@localhost /]# cp /mnt/isolinux/initrd.img /install/tftpboot/kernel/centos6.4
[root@localhost /]# cp /mnt/isolinux/isolinux.cfg /install/tftpboot/pxelinux.cfg/
[root@localhost /]# cp /mnt/isolinux/boot.msg /install/tftpboot/
[root@localhost /]# cp /mnt/EFI/BOOT/*.* /install/tftpboot/
[root@localhost /]# cp /efidefault /insatll/tftpboot/

9.NFS service
[root@localhost /]# mkdir -p /install/nfs_share/centos6.4
[root@localhost /]# vim /etc/fstab

fstab:
/dev/mapper/VolGroup-lv_root / ext4 defaults 1 1
UUID=46cb1b57-c057-4963-9682-23d850a3fc9d /boot ext4 defaults 1 2
/dev/mapper/VolGroup-lv_home /home ext4 defaults 1 2
/dev/mapper/VolGroup-lv_swap swap swap defaults 0 0
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
#add this line
/Centos_6.4.iso /install/nfs_share/centos6.4 iso9660 defaults,loop 0 0

to enable mount
[root@localhost /]# mount -a
#check to see if it is mounted
[root@localhost /]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root
51606140 16999308 31985392 35% /
tmpfs 987372 228 987144 1% /dev/shm
/dev/sda1 495844 39677 430567 9% /boot
/dev/mapper/VolGroup-lv_home
184350796 191852 174794464 1% /home
/Centos_6.4.iso 3681792 3681792 0 100% /install/nfs_share/centos6.4


9.Edit exports
[root@localhost /]# vim /etc/exports

[root@localhost /]# mkdir -p /home/leopard

 exports:
#/install/nfs_share/ 192.168.2.*(ro)
/install/nfs_share/ 192.168.2.0/24(ro,async,nohide,crossmnt) localhost(ro,async,nohide,crossmnt)
/home/leopard *(rw,no_root_squash,sync)

10.   Set up UEFI and Legacy configure menu boot

 Set up UEFI PXE configuration
[root@localhost /]# cd /install/tftpboot
[root@localhost tftpboot]# vi efidefault

#debug --graphics
default=0
#splashimage=(nd)/splash.xpm.gz
timeout 40
#hiddenmenu

title [Leopard_uEFI] CentOS 6.4 x64 for SOL kickstart
root (nd)
kernel /kernel/centos6.4/vmlinuz ip=dhcp ks=nfs:192.168.2.1:/install/nfs_share/sol.ks text console=ttyS1,57600
initrd /kernel/centos6.4/initrd.img

title [Leopard_uEFI] CentOS 6.4 x64 for com kickstart
root (nd)
kernel /kernel/centos6.4/vmlinuz ip=dhcp ks=nfs:192.168.2.1:/install/nfs_share/com.ks text console=ttyS0,57600
initrd /kernel/centos6.4/initrd.img

title [Leopard_uEFI] CentOS 6.4 x64 manual
root (nd)
kernel /EFI_kernel/centos64x64/vmlinuz ip=dhcp method=nfs:192.168.2.1:/images/centos64x64
initrd /EFI_kernel/centos64x64/initrd.img

title [Leopard_uEFI] CentOS 6.4 x64 for guifullap
root (nd)
kernel /kernel/centos6.4/vmlinuz ip=dhcp ks=nfs:192.168.2.1:/install/nfs_share/guifullap.cfg 
initrd /kernel/centos6.4/initrd.img

 Set up  legacy BIOS PXE configuration
[root@localhost /]# cd /install/tftpboot/pxelinux.cfg
[root@localhost pxelinux.cfg]# vi default

 default menu.c32
    prompt 0
    timeout 300
    
      menu title ==== Boot Menu ====

 #LABEL 1)CENTOSX64 LEDGACY (NFS method)   
#MENU  [Leopard_uEFI] CentOS 6.4 x64 for SOL kickstart
#kernel /kernel/centos6.4/vmlinuz ip=dhcp ks=nfs:192.168.2.1:/install/nfs_share/sol.ks text console=ttyS1,57600
#initrd /kernel/centos6.4/initrd.img

 LABEL 1) Boot from local drive
   menu label ^2) Boot from local drive
   localboot

 LABEL 2) CentOS 6.4 x64 final SOL kickstart(http:// method)
kernel kernel/centos6.4/vmlinuz
append initrd=kernel/centos6.4/initrd.img text quiet console=ttyS1,57600n8 ks=nfs://192.168.2.1:/install/nfs_share/sol.ks

 LABEL 2) CentOS 6.4 x64 final SOL kickstart(http:// method)
kernel kernel/centos6.4/vmlinuz
append initrd=kernel/centos6.4/initrd.img text quiet console=ttyS0,57600n8 ks=nfs://192.168.2.1:/install/nfs_share/com.ks

 LABEL 4) CentOS 6.4 x64 final manual (http:// method)
kernel kernel/centos6.4/vmlinuz
append initrd=kernel/centos6.4/initrd.img method=nfs://192.168.2.1:/Centos6.4 ip=dhcp

11. kickstart setup
[root@localhost /]# cp /sol.ks com.ks /install/nfs_share/


11.vftfp setup (put driver inside ftp)
[root@localhost /]#cp /V9_20141028.tar /var/ftp

12.chkconfig setup (enable services)
[root@localhost /]# chkconfig xinetd on
[root@localhost /]# chkconfig tftp on
[root@localhost /]# chkconfig rpcbind on
[root@localhost /]# chkconfig nfs on
[root@localhost /]# chkconfig rpcidmapd on
[root@localhost /]# chkconfig nfslock on
[root@localhost /]# chkconfig vsftpd on
[root@localhost /]# chkconfig dhcpd on

13.Reboot server or start service
[root@localhost ~]# /etc/init.d/dhcpd restart
[root@localhost tftpboot]# /etc/init.d/xinetd restart
[root@localhost /]# /etc/init.d/rpcbind restart
[root@localhost /]# /etc/init.d/nfs restart
[root@localhost /]# /etc/init.d/rpcidmapd restart
[root@localhost /]# /etc/init.d/nfslock restart

# make sure vsftpd services is running
[root@localhost /]# /etc/init.d/vsftpd start

14 give permission to kernel
chmod 777 /install/tftpboot/kernel
chmod 777 /install/tftpboot/kernel/centos6.4

_______________________________________________________________________

Set up Pxe Server with kicstart automation (uefi /legacy ) HTTP

introduce folder and create folder: 
[root@localhost ~]# cd /
[root@localhost /]# mkdir /tftpboot
1.Disable Firewall:
[root@localhost ~]# service iptables stop

2.Disable SELinux
[root@localhost ~]# setenforce 0

3. copy cdrom file from dvd rom into desktop, and create into iso filoe
[root@localhost ~]# mkdir /var/www/html/Centos6.4
[root@localhost ~]# cd /var/www/html
[root@localhost html]# mkisofs -r -o /centos6.4.iso Centos6.4/

4. Set your ip address.
Eth0 set 192.168.2.1, mask: 24, gateway: 192.168.2.254
Eth1: set 192.168.1.1, mask: 24, gateway: 192.168.1.254
Reboot DUT

5.DHCP service
[root@localhost ~]#vi /etc/sysconfig/dhcpd
DHCPD_INTERFACE="et01 eth1"
[root@localhost ~]# vi /etc/dhcp/dhcpd.conf

dhcpd.conf: 

ignore client-updates;
ddns-update-style interim;
default-lease-time 259200;
max-lease-time 518400;
option arch code 93 = unsigned integer 16;
next-server 192.168.2.1;
subnet 192.168.2.0 netmask 255.255.255.0 {
range dynamic-bootp 192.168.2.2 192.168.2.200;
if option arch = 00:07{

#for uefi
filename "BOOTX64.efi";
}else{

#for legacy
filename "pxelinux.0";
}


}

6. TFTP service
[root@localhost ~]# vim /etc/xinetd.d/tftp

tftp:
service tftp
{
disable = no
socket_type = dgram
protocol = udp
wait = yes
user = root
server = /usr/sbin/in.tftpd
server_args = -s /install/tftpboot
per_source = 11
cps = 100 2
flags = IPv4
}

7. Create tftpboot directory

[root@localhost tftpboot]# chcon --reference /var/lib/tftpboot /tftpboot
[root@localhost /]# cp /usr/share/syslinux/menu.c32 /usr/share/syslinux/vesamenu.c32 /usr/share/syslinux/pxelinux.0 /tftpboot/
[root@localhost /]# mkdir /tftpboot/pxelinux.cfg
[root@localhost /]# mkdir -p /tftpboot/kernel/centos6.4
[root@localhost /]# cp /mnt/isolinux/vmlinuz /tftpboot/kernel/centos6.4
[root@localhost /]# cp /mnt/isolinux/initrd.img /tftpboot/kernel/centos6.4
[root@localhost /]# cp /mnt/isolinux/isolinux.cfg /tftpboot/pxelinux.cfg/
[root@localhost /]# cp /mnt/isolinux/boot.msg /tftpboot/
[root@localhost /]# cp /mnt/EFI/BOOT/*.* /tftpboot/
[root@localhost /]# cp /efidefault /tftpboot/


8. Create file in httpd directory
[root@localhost /]#  cd /var/www/html
[root@localhost html]# mkdir Centos6.4
[root@localhost /]# mount -o loop centos6.4.iso /var/www/html/Centos6.4
fstab:
/dev/mapper/VolGroup-lv_root / ext4 defaults 1 1
UUID=46cb1b57-c057-4963-9682-23d850a3fc9d /boot ext4 defaults 1 2
/dev/mapper/VolGroup-lv_home /home ext4 defaults 1 2
/dev/mapper/VolGroup-lv_swap swap swap defaults 0 0
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
#add this line

/centos6.4.iso /var/www/html/Centos6.4 iso9660 defaults,loop 0 0

9.   Set up UEFI and Legacy configure menu boot

Set up UEFI PXE configuration
[root@localhost /]# cd /install/tftpboot
[root@localhost tftpboot]# vi efidefault

#debug --graphics
default=0
#splashimage=(nd)/splash.xpm.gz
timeout 40
#hiddenmenu

title [Leopard_uEFI] CentOS 6.4 x64 for SOL kickstart 111
root (nd)
kernel /kernel/centos6.4/vmlinuz ip=dhcp ks=http://192.168.2.1/kickstart/centos6.4/sol.ks text console=ttyS1,57600
initrd /kernel/centos6.4/initrd.img

title [Leopard_uEFI] CentOS 6.4 x64 for com kickstart
root (nd)
kernel /kernel/centos6.4/vmlinuz ip=dhcp ks=http://192.168.2.1/kickstart/centos6.4/com.ks text console=ttyS0,57600
initrd /kernel/centos6.4/initrd.img

title [Leopard_uEFI] CentOS 6.4 x64 for guifullap
root (nd)
kernel /kernel/centos6.4/vmlinuz ip=dhcp ks=http://192.168.2.1/kickstart/centos6.4/guifullap.ks
initrd /kernel/centos6.4/initrd.img

title [Leopard_uEFI] CentOS 6.4 x64 for guifullap_manual
root (nd)
kernel /kernel/centos6.4/vmlinuz ip=dhcp method=http//192.168.2.1/Centos6.4
initrd /kernel/centos6.4/initrd.img

 Set up  legacy BIOS PXE configuration
[root@localhost /]# cd /install/tftpboot/pxelinux.cfg
[root@localhost pxelinux.cfg]# vi default
 default menu.c32
    prompt 0
    timeout 300
    
      menu title ==== Boot Menu ====

 #LABEL 1)CENTOSX64 LEDGACY (NFS method)   
#MENU  [Leopard_uEFI] CentOS 6.4 x64 for SOL kickstart
#kernel /kernel/centos6.4/vmlinuz ip=dhcp ks=nfs:192.168.2.1:/install/nfs_share/sol.ks text console=ttyS1,57600
#initrd /kernel/centos6.4/initrd.img

 LABEL 1) Boot from local drive
   menu label ^2) Boot from local drive
   localboot

 LABEL 2) CentOS 6.4 x64 final (http:// method)
kernel kernel/centos6.4/vmlinuz
#append initrd=kernel/centos6.4/initrd.img \ method=http://192.168.2.1/Centos6.4 ip=dhcp
append initrd=kernel/centos6.4/initrd.img ks=http://192.168.2.1/kickstart/centos6.4/guifullap.ks ip=dhcp
LABEL 3) CentOS 6.4 x64 final SOL kickstart(http:// method)
kernel kernel/centos6.4/vmlinuz
append initrd=kernel/centos6.4/initrd.img text quiet console=ttyS1,57600n8 ks=http://192.168.2.1/kickstart/centos6.4/sol.ks

 LABEL 4) CentOS 6.4 x64 final manual (http:// method)
kernel kernel/centos6.4/vmlinuz
append initrd=kernel/centos6.4/initrd.img method=http://192.168.2.1/Centos6.4 ip=dhcp

11. kickstart setup
[root@localhost /]# cd /var/www/html
[root@localhost html]# mkdir kickstart
[root@localhost kickstart]# mkdir centos6.4
[root@localhost /]# cp /sol.ks com.ks /var/www/html/kickstart/centos6.4

12.vftfp setup (put driver inside ftp) optional
[root@localhost /]#cp /V9_20141028.tar /var/ftp

13.chkconfig setup (enable services)
[root@localhost /]# chkconfig xinetd on
[root@localhost /]# chkconfig tftp on
[root@localhost /]# chkconfig rpcbind on
[root@localhost /]# chkconfig nfs on
[root@localhost /]# chkconfig rpcidmapd on
[root@localhost /]# chkconfig nfslock on
[root@localhost /]# chkconfig vsftpd on
[root@localhost /]# chkconfig dhcpd on
[root@localhost /]# chkconfig httpd on

14.Reboot server or start service
[root@localhost ~]# /etc/init.d/dhcpd restart
[root@localhost tftpboot]# /etc/init.d/xinetd restart
[root@localhost /]# /etc/init.d/rpcbind restart
[root@localhost /]# /etc/init.d/nfs restart
[root@localhost /]# /etc/init.d/rpcidmapd restart
[root@localhost /]# /etc/init.d/nfslock restart
[root@localhost /]#  /etc/init.d/httpd restart
# make sure vsftpd services is running
[root@localhost /]# /etc/init.d/vsftpd start

15 give permission to kernel
chmod 777 /tftpboot/kernel
chmod 777 /tftpboot/kernel/centos6.4
_______________________________________________________________________

Set up Pxe Server with RHEL7.X/ Centos7.X HTTP
all the settingis the same, except efidefault is different.

 title [Leopard_uEFI] CentOS 6.4 x64 for guifullap_manual
root (nd)
kernel /kernel/rhel7.1/vmlinuz inst.stage2=http//192.168.2.1/rhel7.1
initrd /kernel/rhel7.1/initrd.img
-----------------------------------------------------------------------------------------------------------------

reference:
Chinese: 
http://benjr.tw/83/5
http://blog.xuite.net/geniusn/note/29065663-%E7%94%A8CentOS%E6%9E%B6%E8%A8%ADPXE+Server
http://www.dotblogs.com.tw/ghoseliang/archive/2013/05/01/102558.aspx
English:
http://djmimi-linux.blogspot.tw/2014/03/how-to-build-pxe-server-support-legacy.html

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Sunday, November 9, 2014

BIOS

what is a bios?

BIOS的全名是「Basic Input Output System」，它是啟動電腦組件功能的鑰匙，主機板上有一顆上面貼著發光貼紙的IC，這就是BIOS。BIOS的作用是提供電腦基本運作的程式，電腦一開機，會先載入BIOS中基本的程式，然後再執行作業系統，所以如果沒有BIOS，電腦就無法開機喔！

所謂的BIOS是電腦中用來控制與設定硬體基本功能並提供作業系統掌控硬體設備與各種裝置的媒介。我們可以藉由修改BIOS設定值來開啟或關閉某個硬體裝置的功能，也可藉此調整硬體的運作方式與運作效能（如對CPU或顯示卡做超頻… 等）。


reference: 
http://mail.mcjh.kl.edu.tw/~lin/teach/computer/bios/bios.htm
http://briian.com/6117/bios-boot-option.html

簡單說就是bios 就是電腦開機，bios會先偵測到所有devices的資訊，如cpu, ram, hdd, 等等。一但開機它會先到bios那才到OS。

我們BIOS分Legacy跟UEFI 兩鐘。

BIOS分為兩種，Legacy跟UEFI。Legacy應該就是你講的所謂「傳統BIOS」，是用組合語言撰寫，缺乏擴充性、沒有彈性，很難加上一些新功能，目前的電腦絕大多數都還是用Legacy BIOS。

而UEFI BIOS，是用C語言撰寫，是由個別的程式模組構成，因此擴充性高，可根據需要加入新程式模組、載入驅動程式。新的晶片組開始支援UEFI，因此未來新的電腦BIOS，絕大多數都會採用UEFI BIOS。

 For more information please link this site: http://x86asm.net/articles/introduction-to-uefi/
Reference: https://tw.knowledge.yahoo.com/question/question?qid=1611123005237
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Saturday, November 8, 2014

34 Free Cloud Storage Services

34 Free Cloud Storage Services

Please go to reference website to see more cloud storage

1. MEGA
2. Pydio
3. Hive
4. MediaFire
5. pCloud
6. SurDoc
7. Dump Truck
8. Dropbox
9. Box
10. SeaCloud
11. Inbox.com
12. Copy
13. PromptFile
14. FlipDrive
15. Google Drive
16. OneDrive
17. Mightyupload
18. Amazon Cloud Drive
19. HiDrive
20. Cubby
21. OziBox
22. StreamNation
23. ADrive
24. Yandex.Disk

reference http://freebies.about.com/od/computerfreebies/tp/free-cloud-storage.htm
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Wednesday, October 29, 2014

Vmware meet this error message "Unable to open kernel device "\\.\VMCIDev\VMX" while installing OS ?


Vmware  meet this error message "Unable to open kernel device "\\.\VMCIDev\VMX" while installing OS ?

Solution to solve this problem is: vmci0.present = "false"Reference: https://communities.vmware.com/thread/341510
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