Arch migration (success!!)

Steve Litt slitt at troubleshooters.com
Tue Dec 20 17:23:19 MST 2016


On Tue, 20 Dec 2016 10:13:16 -0700
Michael Butash <michael at butash.net> wrote:


> Use of GPT is/was really trying to keep up with tech, where early
> days of SSD, fdisk was terrible about alignment, where most things
> can and still do say to use GPT.  Just no one tells you it is
> inherently broken still on most platforms to consider booting off of.

I've had great results with GPT on drives I'm not booting to. Huge
files, huge numbers of files, everything's great. Based on the specs I
found in Wikipedia, I wrote a program to back up the front GPT area and
compare it to the rear EPT area, so it's like backing up the first 512
bytes of a MBR formatted disk.

 
> I'd be more inclined to try EFI, 

EFI is the booting method used to boot from a GPT formatted disk. You
can't use EFI on a disk that isn't GPT. I could write a 2000 word essay
on the many reasons EFI boot sucks.

This is the logic...

If you're booting to a GPT partitioned disk, you must use EFI boot (or
maybe that phony compatibility MBR).

If you're booting EFI, your boot disk must be GPT formatted.

If you're booting MBR to an MBR formatted disk, any other disks on the
system can be GPT formatted or MBR formatted, your choice.

 
SteveT

Steve Litt 
December 2016 featured book: Rapid Learning for the 21st Century
http://www.troubleshooters.com/rl21


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