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i7 Compatibility issue?

  • Jakob Andersen
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15 years 10 months ago #3104 by Jakob Andersen
i7 Compatibility issue? was created by Jakob Andersen
Hi all,

Since Wednesday, I've been trying to install the eagerly anticipated CAELinux distro, but no matter what I do, I cannot get the Ubuntu installer to detect my HD drives/partitions. the plan is to dual boot with Vista, which is already installed. Vista has no problem detecting the partitions on my main drive.

I am starting to think that the 8.04 OS simply does not support my computer architecture (intel i7 on an asus p6t motherboard) - a prospect that is hinted in this thread:

ubuntuforums.org/showthread.php?t=883275...a+install&page=3

I even tried to install Ubuntu 9.04 using wubi (brilliant software btw :) ), which worked instantaneously.

Attempted/failed fixes:
- Format Ubuntu partition to fat32 in Vista
- Update BIOS to newest version
- Download newest SATA controller
- Run SATA in compatible (legacy) mode

... still no disks visible.

I purchased my computerparts with the specific purpose of handling large CFD simulations - preferably in CAELinux.

Does anyone have any inputs on this problem? Any helt would be greatly appreciated!

Thanks,

Jakob<br /><br />Post edited by: Jakob Andersen, at: 2009/06/22 19:45
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15 years 10 months ago #3108 by Joël Cugnoni
Replied by Joël Cugnoni on topic Re:i7 Compatibility issue?
Hi,

I have successfully installed Ubuntu 8.04 on a PC with Core i7 940 / Intel X58 + 12Gb Ram (great performance by the way!!).

I had to play with the SATA controller mode though:
if I remember well, in the BIOS, I had to select SATA controller mode to AHCI (= SATA2 with NCQ, not legacy IDE, nor RAID mode). This is a common limitation of &quot;older&quot; linux distro with Intel ICH9/10 controllers: they are only supported when set to AHCI mode.

www.linuxquestions.org/questions/linux-h...not-detected-662096/

ubuntuforums.org/showthread.php?t=932040

This should normally fix the problem for Linux BUT you will need to supply AHCI HDD controler drivers to install XP (don't know for Vista) with AHCI enabled...

Joël Cugnoni - a.k.a admin
www.caelinux.com
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15 years 10 months ago #3109 by Matthew Bondy
Replied by Matthew Bondy on topic Re:i7 Compatibility issue?
I dont know much about this stuff but are you trying to put Linux on a FAT32 type partition? At the very least that is not recommended. I have seen countless posts advising the use of ext type file systems. I guess one advantage with FAT would be that Vista would be able to view the files on the Linux partition whereas if you format it as an ext type Vista does not recognize it. The ext type partition also causes problems with stupid Windows 'check up' programs that often come on HP computers. I keep getting messages advising me to reformat the &quot;unused&quot; portion of the drive so that Vista can eat it up. I suspect it knows Linux is there and is just being an evil Windows based app... No need for those types of programs in Linux!

Regards,
- Matt Bondy
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15 years 10 months ago #3142 by Jakob Andersen
Replied by Jakob Andersen on topic Re:i7 Compatibility issue?
It works!

Indeed, the Ubuntu install was not able to detect my disks in IDE mode - changing the setting to AHCI did the trick. Unfortunately Vista cannot boot under that setting so it needs to be changed before booting. I think one solution is to add &quot;all_generic_ide&quot; to the grub bootloader sequence for Ubuntu.

Now my only hurdle is getting my WiFi dongle up and running.

But anyway - thanks a lot for the help!

I am looking forward to benchamarking my computer on some CFD problems.

best regards,

Jakob

BTW Matthew B: The &quot;format to fat32&quot; idea was given to me in a danish Ubuntu forum - the point being, that maybe Ubuntu would be able to detect a partition of that kind. This ofcourse, was not really the problem. BIOS settings were to blame. Also, regarding your comment on windows and ext; I just downloaded a programme that can enable windows to read ext formats - it is called &quot;Ext2IFS&quot; ( www.fs-driver.org/ ). I haven't tried it though.
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15 years 10 months ago #3157 by Matthew Bondy
Replied by Matthew Bondy on topic Re:i7 Compatibility issue?
The ability to access the linux partition through windows would be pretty sweet. Thanks for the heads up. On the other hand it would have me using Windows more (right now the one way ability to access the entire hard drive makes Linux very attractive).

- Matt Bondy
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15 years 10 months ago #3160 by Joël Cugnoni
Replied by Joël Cugnoni on topic Re:i7 Compatibility issue?
Hi,

I am not 100% sure but in principle, you could be able to access the ext3 linux partition from Windows using Ext2IFS even if you need to change from AHCI to IDE modes to boot Linux and Windows.

The AHCI / IDE settings only change which hard disk controller driver you are using (AHCI = SATA driver, IDE = old generic IDE driver), but do not change anything to the hard disk content or geometry (it is not the same as changing a drive to / from LBA)

Joël Cugnoni - a.k.a admin
www.caelinux.com
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