Re: Installing Debian on an SSD
On Friday 11 January 2013 06:15:52 Bob Proulx wrote:
> Lisi Reisz wrote:
> > Bob Proulx wrote:
> > > Grześ Andruszkiewicz wrote:
> > > > Does the Debian installer work out of the box for SSDs?
> > >
> > > Wheezy 7.0, yes. Squeeze 6.0, no.
> >
> > Sorry, Bob, but I disagree.
>
> I could be wrong. :-)
>
> The part in particular I am thinking of is the installer partitioning
> the SSD disk. I didn't think the Squeeze installer did 4k byte
> alignment. I thought it did only 512 byte alignment. If the
> partitions are not aligned then performance will suffer. Since as far
> as I know all SSD devices use 4k alignments.
>
> > I installed Squeeze on an SSD both four months ago on my own new box
> > and last weekend on my husband's, both times with no issues at all
> > that were due to the SSD.
>
> I run Squeeze just fine on my SSD too. But I recall that I needed to
> force the alignment prior to installing.
>
> Could you check your disk alignment?
>
> # sfdisk -d /dev/sda
>
> Bad (for SSDs, okay for spinning disks):
> /dev/sda1 : start= 63, size= 995967, Id=83
> Good:
> /dev/sda1 : start= 2048, size= 997376, Id=83
root@Tux-II:/home/lisi# sfdisk -d /dev/sda
# partition table of /dev/sda
unit: sectors
/dev/sda1 : start= 2048, size= 58591232, Id=83, bootable
/dev/sda2 : start= 0, size= 0, Id= 0
/dev/sda3 : start= 0, size= 0, Id= 0
/dev/sda4 : start= 0, size= 0, Id= 0
root@Tux-II:/home/lisi#
> If it says 2048 and you didn't do anything to force it then I am wrong
> and Squeeze supports it okay. And thank you for correcting me. :-)
No forcing! That is on my box. My husband's is in use.
> I had remembered needing to force the alignment. But maybe that was
> in the previous release and I am simply confusing the two. I am sure
> that the Wheezy 7.0 installer sets up the alignment properly.
I just do practically a default installation, apart from refusing Gnome and
adding print server and ssh server at the tasksel stage.
Lisi
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