[arch-general] Arch on SSD!

[Arno Gaboury]

On 21/10/12||16:28, Andrea Crotti wrote:
> I bought a crucial M4 (128GB) for my laptop, and now the idea is to move
> the operating system and most of the data there, keeping the other disk
> in the cd-bay as second disk.
> 
> I formatted the SSD disk like this:
> 
> Disk /dev/sda: 128.0 GB, 128035676160 bytes, 250069680 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: 0x000ee70d
> 
>    Device Boot      Start         End      Blocks   Id  System
> /dev/sda1   *        2048      411647      204800   83  Linux
> /dev/sda2          411648   250069679   124829016   83  Linux
> 
> Where sda2 is a LVM volume, but the first thing which I'm not sure is if
> I got the alignment correct.  I didn't find anywhere what should be the
> alignment for my disk, and a way to check that you actually got it
> right (some ways only for Windows funnily).
> 
> Any hint?
> 
> The second thing is that at the moment I should be able to boot both
> disks, but the SSD now fails to load, and I'm a bit lost in the new
> GRUB2 configuration:
> 
> 
> MENUENTRY 'Arch GNU/Linux, with Linux core repo kernel' --class arch
> --class gnu-linux --class gnu --class os $menuentry_id_option
> 'gnulinux-core repo
> kernel-true-ad4103fa-d940-47ca-8506-301d8071d467' {
>     load_video
>     set gfxpayload=keep
>     insmod gzio
>     insmod part_msdos
>     insmod ext2
>     set root='hd0,msdos5'
>     if [ x$feature_platform_search_hint = xy ]; then
>       search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos5
> --hint-efi=hd0,msdos5 --hint-baremetal=ahci0,msdos5
> ad4103fa-d940-47ca-8506-301d8071d467
>     else
>       search --no-floppy --fs-uuid --set=root
> ad4103fa-d940-47ca-8506-301d8071d467
>     fi
>     echo    'Loading Linux core repo kernel ...'
>     linux    /boot/vmlinuz-linux
> root=UUID=ad4103fa-d940-47ca-8506-301d8071d467 ro  quiet
>     echo    'Loading initial ramdisk ...'
>     initrd    /boot/initramfs-linux.img
> }
> 
> 
> All I need to do is boot from disk (hd0, 0) and then the / is on LVM
> /dev/ssd/root.
> 
> I'm not sure, however, if this configuration is supposed to make sense
> or it's just autogenerated as a template..
> 
> 
> The fstab for the SSD is this:
> 
> /dev/mapper/ssd-root    /             ext4
> rw,relatime,data=ordered,discard    0 2
> 
> # UUID=54d06c44-2b32-4969-be42-d98d2bf7e994
> /dev/sda1               /boot         ext4
> rw,relatime,data=ordered,discard    0 2
> 
> 
> but I've seen somewhere that ext4 might be a problem too, or is that
> fixed?
> 
> Thanks a lot,
> Andrea


I used Gparted to format my SSD. It will deal by itself with
alignmenets.