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[bug #29831] GRUB 2 does not detect logical partition on 320GB hard driv

From: Peter Jaworski
Subject: [bug #29831] GRUB 2 does not detect logical partition on 320GB hard drive
Date: Sun, 09 May 2010 09:15:55 +0000
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20091121 Gentoo Firefox/3.5.5


                 Summary: GRUB 2 does not detect logical partition on 320GB
hard drive
                 Project: GNU GRUB
            Submitted by: piom
            Submitted on: Sun 09 May 2010 09:15:54 AM GMT
                Category: Disk &amp; Partition
                Severity: Major
                Priority: 5 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 1.98
         Reproducibility: Every Time
         Planned Release: None



I have noticed that GRUB 2 have problem with my hard drive. Linux has remaped
for its purposes the disk parameters:
Size: 320072933376 bytes, 320.0 GB
Heads: 255 Sectors per Track: 63 Cylinders: 38913

My laptop BIOS does not fully support this drive it detects only half of it.
There is no BIOS update available, but Windows and Linux handle this issue.
But there is problem with GRUB 2.

Sutructure on disk is divided like this (in sectors):

   Device              Start         End      Blocks          Id     System
/dev/sda1              1           2611     20972826     83     (not used)
/dev/sda2            2612        7833     41945715     83   Linux jfs
/dev/sda3            7834       15666    62918572+   83   Linux jfs
/dev/sda4           15667       38911   186715462+   f    W95 Ext'd (LBA)
/dev/sda5           15667       38650   184618948+  83  Linux jfs
/dev/sda6           38651       38911    2096451       82  Linux swap /

GRUB2 has problem when I ask it to load system from sda5, there is no problem
with sda2 and sda3. Writing something about table scope has been exceeded, or
sometimes UUID not found. Now, I have moved system to sda2, so I no more see
this issue but there was nothing to do when I had tried sda5.

Probably GRUB uses BIOS information. Why it cannot remap disk like Linux do
this? Or is it other problem?


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