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Mridang Agarwalla
Asked: 2011-07-23 05:12:47 +0800 CST

Mounting an existing partition of an unmounted disk

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I ran the fdisk -l command to show me all the disks and partitions. Here's the output:

Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0003c54f

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          32      248832   83  Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2              32      121602   976510977    5  Extended
/dev/sda5              32      121602   976510976   fd  Linux raid autodetect

Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000e92b3

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1      119513   959986688   83  Linux
/dev/sdb2          119514      121602    16773121    5  Extended
/dev/sdb5          119514      121602    16773120   82  Linux swap / Solaris

Disk /dev/sdc: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00089d08

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1               1          32      248832   83  Linux
Partition 1 does not end on cylinder boundary.
/dev/sdc2              32      121602   976510977    5  Extended
/dev/sdc5              32      121602   976510976   8e  Linux LVM

Currently my mounted partitions are /dev/sdb1 and /dev/sdb2. I have some data on the partition /dev/sda2 that I'd like to access. How can i mount this temporarily so that I can access it? Running mount /dev/sda2 gives me an error saying mount: can't find /dev/sda2 in /etc/fstab or /etc/mtab.

linux ubuntu partition mount diskmanagement

1 Answers

  1. /dev/sda2 is the "Extended" partition containing /dev/sda5. There is no data there (other than the contents of /dev/sda5).

    In the general case, though, if you don't have an entry in /etc/fstab with the mounting options, you'll need to provide all of the options to mount:

    mount /dev/something /some/directory/to/mount/to

    Possibly with -t filesystemtype if mount is unable to autodetect it.

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