sudo fdisk in a live session does not show all hard drives

Posted by cornbread on Super User See other posts from Super User or by cornbread
Published on 2010-07-31T05:34:14Z Indexed on 2011/02/07 15:28 UTC
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I am having Grub2 issues in my Ubuntu 10.04 dual boot, 2 hard drive system. So I am attempting to follow the standard grub2 reinstallation guide (cant post link because of spam filters allowing only one... ?_?)

Don't know if this is the root of my problem, but my speedy internal HD with my OS on it is not showing up anywhere in a live session.

Not in nautilus, behind fdisk.... no where. When I can get the main system to boot, there is no issue seeing all available partitions. But the live session sees only the 1TB internal media/backup hard drive.

I need access to the other hard drive and it's partitions to finish the grub2 re-installation but I am not sure anymore that is the underlying issue. Anyone have experience with this?

The issue I have identified as a grub2 issue is fully described here. SandPvvr describes it exactly. Some notes:

  • I do not see the grub2 menu for my os's
  • holding down the shift key after my bios screen works maybe 10% of the time
  • Not related to reinstalling a windows os. havent been touched in a year
  • do some web development. issue may have started when I was playing with ruby and django. not sure on this. Could a dev environment do this?

fdisk in live session

ubuntu@ubuntu:~$ sudo fdisk -l

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: 0x0001d518

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb2               1      121601   976759939    5  Extended
/dev/sdb5             487      110765   885816036   83  Linux
/dev/sdb6          110766      121601    87040138+   b  W95 FAT32
/dev/sdb7               1         486     3903700+  82  Linux swap / Solaris

Partition table entries are not in disk order

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