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thea2
February 18th, 2015, 02:16 AM
Hey guys,

First off, apologies if anything I say doesn't quite make sense - I am very much a theoretical computer scientist, I avoided computer architecture and OS courses at all costs! So I'm not entirely sure what I'm talking about here. Having said that...

I'm attempting to install Ubuntu on my Lenovo U410 Ideapad. I have disabled RAID and Intel Rapid Storage Technology. It has two harddrives, a 32G SSD and a larger HDD. Windows 7 Home Premium is currently installed on the HDD. However when I get to the Ubuntu installation type screen, it can't detect any operating systems.
I attached an image of the disk managment program in Windows, and the options I get with the custom Ubuntu installation option (apologies for poor image quality).

I'm guessing dev/mapper/isw_egbfcigda_Volume0p1 is the System Reserved (F:) volume (although I don't understand why it appears twice) and the free space is my Windows 7 volume.
I wanted to install Ubuntu on the 29.72GB of unallocated space on Disk 0 (seen in Windows disk managment), but I'm not sure what device that is.

Here is the output of fdisk:

Disk /dev/sda: 32.0 GB, 32017047552 bytes
224 heads, 19 sectors/track, 14692 cylinders, total 62533296 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x1fc4b061

Device Boot Start End Blocks Id System
/dev/sda1 * 2048 206847 102400 7 HPFS/NTFS/exFAT

Disk /dev/sdb: 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: 0xb52306e2

Device Boot Start End Blocks Id System
/dev/sdb1 * 2048 411647 204800 7 HPFS/NTFS/exFAT
/dev/sdb2 411648 1370773503 685180928 7 HPFS/NTFS/exFAT
/dev/sdb3 1370773504 1424185343 26705920 7 HPFS/NTFS/exFAT
/dev/sdb4 1424185344 1464735743 20275200 12 Compaq diagnostics

Disk /dev/mapper/isw_egbfcigda_Volume0: 64.0 GB, 64029458432 bytes
224 heads, 19 sectors/track, 29383 cylinders, total 125057536 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 131072 bytes / 262144 bytes
Disk identifier: 0x1fc4b061

Device Boot Start End
Blocks Id System
/dev/mapper/isw_egbfcigda_Volume0p1 * 2048 206847
102400 7 HPFS/NTFS/exFAT

Disk /dev/mapper/isw_egbfcigda_Volume0p1: 104 MB, 104857600 bytes
255 heads, 63 sectors/track, 12 cylinders, total 204800 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 131072 bytes / 262144 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/isw_egbfcigda_Volume0p1 doesn't contain a valid partition table

Disk /dev/sdc: 4211 MB, 4211081216 bytes
255 heads, 63 sectors/track, 511 cylinders, total 8224768 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xb12c4313

Device Boot Start End Blocks Id System
/dev/sdc1 * 142 8224767 4112313 c W95 FAT32 (LBA)


Any help on what my next step should be greatly appreciated. Thanks heaps.

oldfred
February 18th, 2015, 05:35 AM
If it is seeing /mapper that is RAID (or LVM which Windows would not have).
I thought the new version of Ubuntu would not require the removal of the RAID meta-data as has been done with the older versions.

Intel Smart Response Technology
http://mjg59.dreamwidth.org/26022.html
For GPT systems, this needs to have a type GUID of D3BFE2DE-3DAF-11DF-BA-40-E3A556D89593.
For MBR systems, you need a partition type of 0x84[2].
http://www.intel.com/p/en_US/support/highlights/chpsts/imsm
http://software.intel.com/en-us/articles/what-is-intel-rapid-start-technology
http://download.intel.com/support/motherboards/desktop/sb/rapid_start_technology_user_guide.pdf
Some general info in post #3
http://ubuntuforums.org/showthread.php?t=2071242

This Lenovo has UEFI, but yours looks like it still is BIOS boot.

Lenovo IDEAPAD Y410P - In My BIOS I set Boot Legacy Support But i set Boot UEFI First.
http://askubuntu.com/questions/455503/dual-boot-windows-8-and-ubuntu-problem-uefi?noredirect=1#comment599330_455503


Ubuntu on hard drive, re-enable SRT post #19 details
http://ubuntuforums.org/showthread.php?t=2129157

Disable the RAID, it was using the Intel rapid management thingy and telling it to disable the acceleration or the use of the SSD. If you have a different system, just disable the RAID system then install Ubuntu. Once installed you can then re-enable it.
sudo dmraid -E -r /dev/sda
sudo dmraid -E -r /dev/sdb

You will need to use the dmraid command prior to running the Ubuntu Installer so that it will be able to see the partitions on the drive because otherwise with the raid metadata in place it will see the drive as part of a raid set and ignore its partitions.