Arch Linux

kpalmer78

Member

Registered: 2015-03-03

Posts: 12

add second hardrive to laptop ?

Hello, I have a HP Folio 9470m notebook and am using uefi to boot to a GPT partition mSATA harddrive. I am attempting to add an additional SSD to the system for VM's and seem to have an issue booting once the additional drive is inserted into the machine. This is a blank unformatted brand new SSD.

I run into this error on boot:

::running early hook [udev]
starting version 219
::running hook  [udev]
::triggering uevents...
Waiting 10 seconds for device /dev/sda2 ...
ERROR: device ' /dev/sda2' not found. Skipping fsck.
ERROR:: unable to find root device '/dev/sda2'.
You are being dropped to a recovery shell
   Type 'exit' to try and continue booting

I am an IT professional and can google with the best of them, but I am not able to accurately state the problem. What is going on here? My original HD is /dev/sda 1,2,3 when the OS is booted. Why is udev looking to /dev/sda2 to boot ?

One solution I have found is "by-uuid" does this mean that I need to change the way the uefi is looking at disks?

Here is my fstab, is it not already using uuid?

#
# /etc/fstab: static file system information
#
# <file system>    <dir>    <type>    <options>    <dump>    <pass>
# /dev/sda2
UUID=cca98213-f0cc-4bef-80f8-10cb95e776c5    /             ext4          rw,relatime,data=ordered    0 1

# /dev/sda1
UUID=8779-89C8          /boot         vfat          rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro    0 2

# /dev/sda3
UUID=66198f9e-9d04-4c1d-b1c2-d2144dd9eb79    /home         ext4          rw,relatime,data=ordered    0 2

Additionally I am not sure what boot method I am using with uefi, I know its not grub. Can anyone point me in the right direction here? I think I am missing something as I do not know where the uefi information is kept, or understand the boot process 1000%

***EDIT I have found I am using gummiboot

TIA

Kenny

Last edited by kpalmer78 (2015-05-12 23:51:25)

Raynman

Member

Registered: 2011-10-22

Posts: 1,539

Re: add second hardrive to laptop ?

I am an IT professional

Impressive.

Why is udev looking to /dev/sda2 to boot ?

Almost certainly because you have

root=/dev/sda2

in your kernel commandline.

Edit: see https://wiki.archlinux.org/index.php/Gu … ot_entries

Last edited by Raynman (2015-05-12 23:57:35)

kpalmer78

Member

Registered: 2015-03-03

Posts: 12

Re: add second hardrive to laptop ?

Thanks for busting my balls on my first few posts and properly welcoming me. That's why I love the internet.. I was merely stating I worked in IT so that folks would know I not a complete newb.

So is /dev/sda2 changing with the addition of the new drive? I am assuming the new drive is being mounted as /dev/sda, and it has no partitions, causing the error.

Thanks for the link. reading up on it now.

Kenny

kpalmer78

Member

Registered: 2015-03-03

Posts: 12

Re: add second hardrive to laptop ?

Good link I understand now. changing:

title    Arch Linux
linux    /vmlinuz-linux
initrd    /initramfs-linux.img
options    root=/dev/sda2

to :

title    Arch Linux
linux    /vmlinuz-linux
initrd    /initramfs-linux.img
options    root=PARTUUID=341aa5a6-fe34-4898-a661-c8f6b02911f3 rw

crossing fingers and rebooting...;)

***Worked Great. as specified in the link, you need to modify the file:

/boot/loader/entries/arch.conf to always look at at the PARTUUID, as the /dev/sdxY mapping can change on boot.

Thanks for the help.

Kenny

Last edited by kpalmer78 (2015-05-13 00:39:55)