Re: boot device options

[fred roller]

My two bits,
Using a flash drive (thumb drive) as the boot has limited feasible usage.
I have built this way as a security method.  However, thumb drives, as I
recall, are prone to failure more so than regular hard drives.  As to what
gets moved, the grub can be the only thing so long as it knows where to
find the boot partition for the image.  There is more technical info ofc
but that is the basic jist.  Given that raid 1 is mirroring the four
partitions on each drive it is, by it's nature, the protection against
failing hard drives as when one drive fails the other is happily booting
thus giving you the opportunity to change out the failed drive.  Another
option is to keep a recovery thumb drive with the necessary Raid tools for
your system.  That is the beauty of Linux - options.  I would not recommend
regular booting to thumb drive.  HIH.

-- Fred

On Wed, Oct 4, 2017 at 12:34 PM, Jeffrey Ross <jeff(a)bubble.org&gt; wrote:

>  Looking for some feedback and some direction on not only the
> feasibility
>  but does it makes sense to do.
>
>  The scenario is this, this is Fedora 26 system, running RAID1 on all disk
>  partitions, there are only 2 disks in the system with 4 raid partitions
>  each:
>
>  /dev/md125    /      - md125 : active raid1 sdb1[2] sda1[0]
>  /dev/md127    /boot  - md127 : active raid1 sdb3[1] sda3[0]
>  /dev/md124    /home  - md124 : active raid1 sdb5[1] sda5[0]
>  /dev/md126    [swap] - md126 : active raid1 sdb2[3] sda2[2]
>
>  The thought is to use flash of some sort to do the initial boot (eg USB
>  flash) and then continue with the boot using the installed disks.  If this
>  is the case is it the /boot partition that gets moved to flash?  is it grub
>  that gets moved?  Or is it both?  /boot is currently using about 174MB.
>
>  The thought behind this to protect against a disk failure and being unable
>  to boot on the remaining good disk, flash being solid state I would assume
>  it would be more reliable, plus since I'm not looking to constantly write
>  to the partition "wearing out" the media wouldn't be an issue.
>
>  USB device I was thinking about is Z-U130 eUSB SSD, they appear to be
>  available as 1, 2, 4, & 8 GB modules.
>
>  Thanks, Jeff
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