Re: grub freezes at "grub loading."

[Chris Murphy]

On Mar 27, 2013, at 10:35 AM, Jad <address@hidden> wrote:
> 
> I changed the boot mode to "legacy" (no EFI).
> 
> The PC contains two hard disks:
> one 12Gigs SSD

It's not advised to combine CSM-BIOS and SSDs, it significantly limits their 
performance. You'd need to boot a live CD in legacy and EFI modes, and compare 
dmesg to see the consequences of either choice on your particular hardware. But 
so far I've yet to see a CSM not put AHCI in IDE mode, rather than fully native 
AHCI mode. And that limits performance. Further, ACPI is typically limited as 
well, that will inhibit battery life on a laptop.


On Mar 27, 2013, at 12:38 PM, Jad <address@hidden> wrote:

> I did a memtest and it appears I have a faulty ram.

Honestly, there's no guarantee this is true if you're using memtest86+ 4.20 in 
CSM-BIOS mode. It should work, but there can be bugs that cause false positives.

I'd try it with memtest86+ 5.00 beta6, and also check their forums to see about 
others using legacy mode for doing memory tests on EFI hardware.

The manufacturers should supply, or fund OSS, to produce a native UEFI 
application memory tester. They're the ones going down the UEFI road, they need 
to provide the proper tools.

Chris Murphy