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Full Discussion: "dd" on small to large partitions ?
Top Forums UNIX for Dummies Questions & Answers "dd" on small to large partitions ? Post 302337665 by lagagnon on Friday 24th of July 2009 03:24:18 PM
Old 07-24-2009
"dd" on small to large partitions ?
I want to clone a 3.5GB partition from a pen drive (that contains a remastered version of XUbuntu), onto a number of other computers whose hard drives are much larger. The procedure I have tried so far is to:

1) use Gparted Live CD to create a large partition on the target machine and a much smaller swap partition.

2) reboot and then using the same Live CD, insert the master pen drive and then use the dd command as such:

"dd if=/dev/sdc1 of=/dev/sda1 bs=32256"

However, this results in a long copy time and "df -h" shows that the target partition is almost full - even though it is significantly larger than the source partition which was copied to it.

The only way I can see of doing this task is to make the target partition the same size and then use gParted afterwards to expand that partition.

Any other ideas greatly appreciated.
 

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LEARN ABOUT DEBIAN

dtc_setup_vps_disk

dtc_setup_vps_disks(8)					      System Manager's Manual					    dtc_setup_vps_disks(8)

NAME

       dtc_setup_disk - setup LVM disks for using it as a VM

SYNOPSIS

       dtc_setup_vps_disk.sh VPS_NUMBER HDD_SIZE SWAP_SIZE [ lvm|loopback ]

DESCRIPTION

       dtc_setup_vps_disk.sh This shell script is a part of the dtc-xen package that is to be used by the dtc panel to manage a Xen VPS server.

       This script is used to create partitions to be used by a VPS later on.  It will create a normal partition that will be used as a root disk,
       and a swap partition.

       dtc_setup_disk is to be used by the dtc-xen SOAP server, but can also be used as a standalone userland tool.

       If the partition(s) exists, then this script will delete it/them first.

OPTIONS

       VPS_NUMBER has to be a number between 01 and 19. Let's say the number is 16, and that dtc-xen is configured to use the volume group  called
       lvm1, then this script will create /dev/lvm1/xen16 and /dev/lvm1/xen16swap.

       HDD_SIZE Size in MB of the VPS partition to create.

       SWAP_SIZE  Size in MB of the VPS swap partition to create. If the dtc-xen SOAP server is used to create the VPS, then it will create a swap
       partition of the exact same size as the memory.

       IMAGE_TYPE This parameter can have 2 values: either lvm or loopback. If ommited, then lvm is used. If lvm is used, then	this  script  will
       create a partition using lvmcreate, otherwise it will create an image file. Both will later be used for the VPS.

EXAMPLE

       dtc_setup_vps_disk 04 15360 256 lvm

       This will create 2 LVM partition to be used by the VPS named xen04, the first one being a root partition of 15 GB, and the second one being
       a swap partition of 256 MB.

VERSION

       This documentation describes dtc_setup_vps_disk version 0.3.15.	See http://www.gplhost.com/software-dtc-xen.html for updates.

SEE ALSO

       dtc_reinstall_os(8), dtc_kill_vps_disk(8)

															    dtc_setup_vps_disks(8)
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