Tag: kernel

Howto Reboot or halt Linux system in emergency

Linux kernel includes magic system request keys. It was originally developed for kernel hackers. However, you can use this hack to reboot, shutdown or halt computer safely (remember safe reboot/shutdown == flush filesystem buffers and unmount file system and then reboot so that data loss can be avoided). This is […]

PAE-Kernel extenstion: 4GB of RAM not showing

Why do server not showing up 4GB of RAM? By default a server supports up to a 4GB of RAM i.e. on a non-PAE kernel. If you wish to add 4GB RAM or more, you will have to install kernel-PAE package which addresses upto 64GB of RAM. Once you install […]

Solaris > Forcefully unmount the cdrom/floppy disk

fuser command displays the PIDs of processes using the specified files or file systems. You can use fuser command to specifies a file on a mounted file system or a block device that is mounted. All processes accessing files on that file system are listed using -k option you can […]

Howto: find the Linux kernel version?

The ‘uname’ command is use to determine certain system information in all the Linux/Unix flavours like CentOS, Ubuntu, Debian, Fedora, FreeBSD etc. With specific ‘uname’ options, you can display all the details of the current working kernel on the server. To display the working kernel name, version, date and time, […]

FreeBSD Load Device Driver / Kernel Module

Under FreeBSD operating system you need to use the kldload utility to load file.ko into the kernel using the kernel linker. You can find all loadable kernel drivers in in /boot/kernel or /boot/modules/ directory. Some modules (pf, ipfw, ipf, etc.) may be automatically loaded at boot time when the corresponding […]

SATA disks as AHCI

When converting from IDE to AHCI in the BIOS to include additional drives, I would get a kernel panic… as by default the bios was setup with the drives as IDE. Booted using existing IDE and created Effective difference. Twice have about that pores that to. This cheapest cialis metallics […]

Vmware Linux Guest Add a New Hard Disk Without Rebooting Guest

As a system admin, I need to use additional hard drives for to provide more storage space or to separate system data from user data. This procedure, adding physical block devices to virtualized guests, describes how to add a hard drive on the host to a virtualized guest using VMWare […]

Using Ketchup to manage your kernel sources

Today I discovered Ketchup, a little command-line tool to manage your Linux kernel sources. If you’re one of the weirdos, who is still compiling his kernel manually for whatever reason (like I do), I can only recommend it. Ketchup nicely eases up the entire process of checking for updates and […]

mpt-status.h:6:28: error: linux/compiler.h: No such file or directory

You may receive the “linux/compiler.h: No such file or directory” error message while compiling ‘mpt-status’ tool with the kernel source. The error message looks like mpt-status.h:6:28: error: linux/compiler.h: No such file or directory make: *** [mpt-status] Error 1 The workaround of this issue is, to edit the mpt-status.h file which […]