How to mount an image file and access image content

To get access to the content of a virtual machine image or a ISO file, follow these steps:

• associate the file with a loop device node:
  # losetup /dev/loop0 /var/otheros.img
• list the partition table of the device:
  

  # fdisk -l /dev/loop0 
  Disk /dev/loop0: 21.4 GB, 21474837504 bytes 
  255 heads, 63 sectors/track, 2610 cylinders 
  Units = cylinders of 16065 * 512 = 8225280 bytes 
        Device Boot      Start         End      Blocks   Id  System 
  /dev/loop0p1   *           1        2609    20956761    7  HPFS/NTFS

• create device map (kpartx is part of multipath-tools package on Ubuntu):
  

  # kpartx -a /dev/loop0
  # ls -l /dev/mapper/ 
  total 0 
  crw-rw---- 1 root root  10, 62 Jul  6  2008 control
  brw-rw---- 1 root disk 253,  0 Jul  5 23:18 loop0p1 

• mount the device partition:
  # mount /dev/mapper/loop0p1 /mnt

Posted by: Z24 | Thu, Jul 10 2008 | Category: /linux | Permanent link | home
Tagged as: command-line, linux, shell

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Running Windows XP in Xen from its own partition

Some months ago I made some experiments with Xen and I succeeded to install and run Windows XP as a guest using Xen 3.0. In that case Windows was located in a single file and was installed through Xen. My purpose now is to make Xen running an already installed Windows from its own partition. Just to be more specific, this is my machine configuration:

• Ubuntu Dapper Drake 6.06 is located on a SATA disk, set as first boot disk
• Windows XP is located on a EIDE disk, set as second boot disk
• Dual boot is made by grub

I want to log into linux and run my existing Windows XP from its own partition on the EIDE disk.

See full post ...

Posted by: Z24 | Mon, Dec 03 2007 | Category: /linux | Permanent link | home
Tagged as: grub, linux, ubuntu, virtualization, windows, xen, xp

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Ubuntu Dapper Drake 6.06 amd64 and Windows XP in Xen 3.0

I am coming from a bloody week of wrestling against packages, bugs and "make world"s trying to run Xen in Ubuntu 6.06 amd64 on an AM2 3800+ and to make a Windows XP Pro domU.
I searched on the web some resources that would explain how to run Windows on Xen and I found some very good tutorial that unfortunately don't fit exactly my configuration and my purpose. These are the sites I took as a basis for my setup:

• dom0 = Debian Sarge 3.1, domU = Debian Sarge, Xen 2.0.7 32 bit installed from binaries or source, paravirtualization
• dom0 = SUSE 10.1, domU = Win XP Pro, Xen 3.0.2, Intel VT hardware virtualization
• dom0 = Ubuntu 6.06, domU = Ubuntu, Xen 3.0.1 32 bit
• dom0 = Kubuntu Dapper Drake, domU = Win XP, Xen 3.0.2-2 32 bit, AMD SVM hardware virtualization

These are all the steps I did and the problems I encountered during this Calvary :-) (I come from Windows with a little linux/unix background):

See full post ...

Posted by: Z24 | Mon, Nov 26 2007 | Category: /linux | Permanent link | home
Tagged as: linux, ubuntu, virtualization, windows, xen, xp

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Pausing a command

How to pause / suspend / sleep a running command in a terminal?
Press Ctrl+S
How to resume the paused command?
Press Ctrl+Q

Posted by: Z24 | Sun, Aug 27 2006 | Category: /linux | Permanent link | home
Tagged as: command-line, linux, shell

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Execute a command at shutdown

To dismount TrueCrypt volumes at shutdown and reboot time, I created a script, put it in/etc/init.d/ and symlinked it into the needed /etc/rc?.d/ directories using update-rc.d.
Here is the detail:

See full post ...

Posted by: Z24 | Sun, Aug 27 2006 | Category: /linux | Permanent link | home
Tagged as: command-line, linux, programming, script, shell

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How to rename multiple files from bash

Rename all *html files to *test:

for x in `ls *html`; do mv $x `echo $x | sed -e "s/html/test/"`; done

Bash for:

for var in some-list ; do command ; done

Posted by: Z24 | Sun, Aug 27 2006 | Category: /linux | Permanent link | home
Tagged as: command-line, linux, programming, script, shell

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