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[ubuntu] GRUB.Geom.Hard Disk.Read.Error and Grub on extended partition! How to fix?

Hi,

my system seems to be ok, yet Boot-Repair tells me, I have Grub on the extended partition, and

Code:

sudo dd if=/dev/sda bs=512  count=1 | hexdump -C
tells me:

Code:

GRUB .Geom.Hard Disk.Read. Error
. Is this critical?

Details
********
Samsung Notebook NP300E5C, 500 GB HD, Multiboot Windows10, Ubuntu 1404.4, Debian Jessie, Xenial Xerus (Development).
fdisk -l:

Code:

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x19c4ca42

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048   197330943    98664448    7  HPFS/NTFS/exFAT
/dev/sda2       197330944   376979381    89824219   83  Linux
/dev/sda3       376979456   392722431     7871488   82  Linux swap / Solaris
/dev/sda4       392724478   976769026   292022274+   5  Extended
Partition 4 does not start on physical sector boundary.
/dev/sda5       392724480   874377215   240826368    7  HPFS/NTFS/exFAT
/dev/sda6       874379264   933763071    29691904   83  Linux
/dev/sda7       933765120   976769026    21501953+  83  Linux
I always have done within my installed Ubuntu 14.04

Code:

sudo grub-install /dev/sda
sudo grub-install --recheck /dev/sda
sudo update-grub
After a new install. A Grub in exrended parttion must have been left after some heedless tinkering with Centos, Scientific OS, OpenSuse?

Should I be worried about the error message and the "dead" Grub on the extended partition?

Thanks.

siggi

برچسب: نویسنده: استخدام کار تاريخ: پنجشنبه 19 فروردين 1395 ساعت: 18:09

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