USB external Hard disk - May be LVM

[Antonio Montagnani]

Jim Cornette ha scritto / wrote  il / on 20/03/2005 11:13:

> Antonio Montagnani wrote:
>
>> I installed FC3 (fresh install) on external USB hard disk (see 
>> different post) , now i moved the HD to another Fedora machine (that 
>> is un upgrade from FC2)
>>
>> USB hard disk is immediately connected to the system but I see only a 
>> /boot(2) partition.
>> I suppose that other directories are LVM type.-How can I see other 
>> partitions??
>>
>
> Using Felipe's directions from an earlier discussion, I had to do this 
> myself. The labels were the same, so /dev/mapper did not recognize 
> them on startup.
>
> Here is what I did to see the lvm volume from the other disk.
>
> Directions from Felipe: (This works with secondary drive mounts also)
>
> Once booted into text-mode rescue, invoke the following commands:
>
> lvm lvscan
> lvm vgchange -ay
>
> This will scan for all LVM volumes and then will make them active and
> accessible.
>
> lvm vgchange -an
>
> will deactivate them all.
>
>
> Additional steps that I had to do;
> Perform the step above to activate the lvm.
>
> Make a mounting point directory, such as /mnt/logvol
> mkdir /mnt/logvol
>
> mount the volume with your resulting device name, for me it was
> mount /dev/VolGroup00/LogVol00 /mnt/logvol
>
> Change to the /mnt/logvol directory and you should see the content of 
> the disk there.
>
> When done with disk, change to a different directory to allow the 
> drive to be unmounted, then:
> umount /dev/VolGroup00/LogVol00 /mnt/volg
>
>  If you have other volumes with similar names, I don't think this 
> would work.
>
> On my new system, I changed to using conventional partitioning. There 
> were no duplicate lvms to deal with.
> This disk was a laptop disk mounted in a USB to IDE bookdrive device. 
> I was able to transfer desired information from the drive mounted 
> above using this method. If you have lvm on the new installation also, 
> you might need to use lvm help for other options.
> lvm help
> should list the other options.
>
> Jim
>
I re-installed Fedora on ext3 partitions.
When I start the rescue mode, no linux system is found!!!! and if I 
connect the USB drive to another system, the hard drive is recognized 
and all partitions are seen.
What am I missing???

-- 
Antonio Montagnani


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