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shinnyx
December 24th, 2012, 01:37 AM
Hi all,

As the title said, I tried to fix with boot-repair but it does nothing. When I looked into the url http://paste.ubuntu.com/1460797/ , sda4 where the ubuntu is installed show nothing.

Below shows my fdisk output


Disk /dev/sda: 750.2 GB, 750156374016 bytes
255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 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: 0xd39bb0d2

Device Boot Start End Blocks Id System
/dev/sda1 * 2048 718847 358400 7 HPFS/NTFS/exFAT
/dev/sda2 718848 614402047 306841600 7 HPFS/NTFS/exFAT
/dev/sda3 614402048 1157943295 271770624 7 HPFS/NTFS/exFAT
/dev/sda4 1157945342 1465147391 153601025 5 Extended
Partition 4 does not start on physical sector boundary.
/dev/sda5 1449148416 1465147391 7999488 82 Linux swap / Solaris


Thanks in adv for the help!

2F4U
December 24th, 2012, 06:17 AM
To me it looks as if /dev/sda4 doesn't contain anything. Can you mount the partition from a liveCD and see if it contains anything? Maybe the partition was formatted during the Windows 8 installation?

oldfred
December 24th, 2012, 06:25 AM
Windows does not see Linux partitions and probably did not rewrite partition table correctly.

It looks like your extended partition is larger than just swap, so it may have had another partition in it?

I would try test disk and see what it says.

https://help.ubuntu.com/community/DataRecovery
https://help.ubuntu.com/community/DataRecovery#Lost%20Partition
repairs including testdisk info & link to testdisk, testdisk is in repository and on most repairCDs
http://members.iinet.net.au/~herman546/p21.html
http://www.psychocats.net/ubuntucat/recoverdeletedfiles/

Instructions
http://www.cgsecurity.org/wiki/TestDisk_Step_By_Step
http://www.cgsecurity.org/wiki/Menu_Analyse

Also:
WARNING for Windows 8 Dual-Booters
http://ubuntuforums.org/showthread.php?t=1953674
It defaults shutdown to a hybrid hibernation/off state for fast boot
http://www.kapilarya.com/how-to-enable-disable-fast-start-up-in-windows-8
But then files may be corrupted similar to Windows 7 Hibernation:
http://ubuntu-with-wubi.blogspot.ca/2012/09/windows-8-fast-start-and-hybrid-sleep.html
http://superuser.com/questions/144720/missing-files-when-windows-7-returns-from-hibernate-w-dual-boot