Flash disk cloning

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(New page: == SMR Flash Disk Cloning == Some of the SMR's now have solid-state flash memory disks, instead of the laptop, 2.5" disks used on older models. This wiki page contains some notes descr...)
 
(Old description)
 
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== SMR Flash Disk Cloning ==
 
== SMR Flash Disk Cloning ==
  
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=== 2012 version with Xubuntu 12.04===
  
Some of the SMR's now have solid-state flash memory disks, instead of the laptop, 2.5" disks used on older models.
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====Clone image to (new) disk====
 
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This wiki page contains some notes describing how to write a bootable flash disk image (Slackware Linux) to a memory card. It assumes a Linux PC with USB flash card reader/writer, available as /dev/sda.
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The commands below is implemented in this script Clone script. Usage:
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clone <from_file.tar.gz> <to device>
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<to device> can be both the USB bus (/dev/sdx) or a IDE device (/dev/hdx)
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The script will place a file .cloned-at on the Flash Disk with time information for the cloning.
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If you put the Flash Disk on the IDE bus and the computer will not boot (LILO - Timestamp mismatch) then the MBR on the Flash Disk must be erased as follows:
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dd if=/dev/zero of=/dev/hdx bs=1 count=512
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Writing an image
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Format the disk, with one large Linux partition:
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sfdisk -L /dev/sda <<EOF
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,,L,*
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EOF
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Create a filesystem:
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mke2fs /dev/sda1 -L /
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Mount the new, empty partition:
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mkdir -p /tmp/u
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mount /dev/sda1 /tmp/u
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Write a previously created image from flash.tar.gz
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zcat flash.tar.gz |
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tar --extract --file - --directory /tmp/u --preserve-permissions
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Create a patched lilo.conf, so that we can run LILO with the flash card mounted via USB. (This won't be necessary if the image written above already contains such a file.)
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patch -o /tmp/u/etc/lilo_usb.conf /tmp/u/etc/lilo.conf <<EOF
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Make a new bootable disk from existing image:
*** /tmp/u/etc/lilo.conf        Tue Nov  4 21:34:44 2003
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--- lilo_usb.conf      Thu Dec 11 11:50:55 2003
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***************
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*** 4,6 ****
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  # Start LILO global section
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! boot = /dev/hda
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  message = /boot/boot_message.txt
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--- 4,7 ----
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  # Start LILO global section
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! boot = /dev/sda
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! disk = /dev/sda bios=0x80
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  message = /boot/boot_message.txt
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EOF
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Run LILO:
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chroot /tmp/u lilo -v -C /etc/lilo_usb.conf
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Use '''clone-xubuntu''' and '''clone-databar''' on smr24 (room 011) as root in /root, where available images are in the ''images'' subdirectory.
All done:
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umount /dev/sda1
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====Make new boot image====
eject /dev/sda
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Reading an image
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Mount as above:
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Update image on one of the 4GB sticks, then make new imagefile
  
  mkdir -p /tmp/u
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* put 4GB stick on another linux (with GRUP installed)
  mount /dev/sda1 /tmp/u
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* mount the disk on a local directory as root, e.g.:
Read the partition:
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sudo bash
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  mkdir -p disk
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  mount /dev/sdb1 disk
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* copy everything on disk to an image file (it takes several minutes):
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cd disk
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tar -czf ../image/smrXubuntu20120715.tar.gz *
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cd ..
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umount disk
  
tar --create --file - --directory /tmp/u --one-file-system --exclude lost+found . |
 
gzip > flash.tar.gz
 
or
 
  
tar -zcf - -C /tmp/u --one-file-system --exclude lost+found . > flash.tar.gz
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==Old description==
All done:
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umount /dev/sda1
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[[old disk cloning procedure]]
eject /dev/sda
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Latest revision as of 11:33, 29 August 2012

Contents

[edit] SMR Flash Disk Cloning

[edit] 2012 version with Xubuntu 12.04

[edit] Clone image to (new) disk

Make a new bootable disk from existing image:

Use clone-xubuntu and clone-databar on smr24 (room 011) as root in /root, where available images are in the images subdirectory.

[edit] Make new boot image

Update image on one of the 4GB sticks, then make new imagefile

  • put 4GB stick on another linux (with GRUP installed)
  • mount the disk on a local directory as root, e.g.:
sudo bash
mkdir -p disk
mount /dev/sdb1 disk
  • copy everything on disk to an image file (it takes several minutes):
cd disk
tar -czf ../image/smrXubuntu20120715.tar.gz *
cd ..
umount disk


[edit] Old description

old disk cloning procedure

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