Difference between revisions of "Activating second disk on ubuntu"

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I have two disks installed on my ubuntu dapper machine.
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I have two disks installed on my ubuntu dapper machine. Each is 250GB. But only one of them appears to be mounted and usable.
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<pre>
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root@weasel:/var/log# df -kh
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Filesystem            Size  Used Avail Use% Mounted on
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/dev/mapper/Ubuntu-root
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                      224G  87G  125G  42% /
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varrun              1007M  208K 1007M  1% /var/run
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varlock              1007M  4.0K 1007M  1% /var/lock
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udev                1007M  108K 1007M  1% /dev
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devshm              1007M    0 1007M  0% /dev/shm
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lrm                  1007M  22M  986M  3% /lib/modules/2.6.15-26-amd64-k8/volatile
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/dev/sda1            228M  102M  115M  48% /boot
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</pre>
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Logical volume manager (LVM) has something to do with this.
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<pre>
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root@weasel:/var/log# fdisk -l
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Disk /dev/sda: 250.0 GB, 250059350016 bytes
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255 heads, 63 sectors/track, 30401 cylinders
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Units = cylinders of 16065 * 512 = 8225280 bytes
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  Device Boot      Start        End      Blocks  Id  System
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/dev/sda1  *          1          31      248976  83  Linux
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/dev/sda2              32      30401  243947025    5  Extended
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/dev/sda5              32      30401  243946993+  8e  Linux LVM
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Disk /dev/sdb: 250.0 GB, 250059350016 bytes
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255 heads, 63 sectors/track, 30401 cylinders
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Units = cylinders of 16065 * 512 = 8225280 bytes
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  Device Boot      Start        End      Blocks  Id  System
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/dev/sdb1  *          1      30401  244196001  8e  Linux LVM
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</pre>

Revision as of 05:30, 7 September 2006

I have two disks installed on my ubuntu dapper machine. Each is 250GB. But only one of them appears to be mounted and usable.

root@weasel:/var/log# df -kh
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/Ubuntu-root
                      224G   87G  125G  42% /
varrun               1007M  208K 1007M   1% /var/run
varlock              1007M  4.0K 1007M   1% /var/lock
udev                 1007M  108K 1007M   1% /dev
devshm               1007M     0 1007M   0% /dev/shm
lrm                  1007M   22M  986M   3% /lib/modules/2.6.15-26-amd64-k8/volatile
/dev/sda1             228M  102M  115M  48% /boot

Logical volume manager (LVM) has something to do with this.

root@weasel:/var/log# fdisk -l

Disk /dev/sda: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          31      248976   83  Linux
/dev/sda2              32       30401   243947025    5  Extended
/dev/sda5              32       30401   243946993+  8e  Linux LVM

Disk /dev/sdb: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *           1       30401   244196001   8e  Linux LVM