{{note box| We go to work with [http://www.sysresccd.org/SystemRescueCd_Homepage SystemRescueCd] wich is a Linux system rescue disk available as a bootable CD-ROM or USB stick for administrating or repairing your system and data after a crash.[http://www.sysresccd.org/Download Download]. The goal is to get mounted your logical volumes on /mnt where you can save them on a usb disk.}}
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start the system with your system rescue cd or you usb stick, choose your keyboard settings
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then start the server X
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startx
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next start a terminal, after verify if your raid is initated.
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cat /proc/mdstat
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if you are lucky the output will look like this
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# cat /proc/mdstat
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Personalities : [raid1]
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md99 : active raid1 sdb1[1] sda1[0]
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104320 blocks [2/2] [UU]
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md100 : active raid1 sdb2[1] sda2[0]
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262036096 blocks [2/2] [UU]
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unused devices: <none>
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so we need to launch the LVM
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vgchange -ay
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afterward if the LVM is launched without error messages, we can mount the LVM in /mnt
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mkdir /mnt/recover
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mount /dev/main/root /mnt/recover
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{{tip box|if you have a name of logical volume who is not '''/dev/main/root''', you can type this command for knowing all your logical volume, and adapt this to your configuration.}}
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lvdisplay
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Now you have successfully mounted your LVM and able to read your data on /mnt/recover, you can save them on a usb disk with the file browser for example.