Re: drive names and UUIDs, was Re: Intresting dd fsck grub uuid fstab action

2017-06-03 Thread Joel Rees
On Sun, Jun 4, 2017 at 12:59 AM, Pascal Hambourg wrote: > Le 03/06/2017 à 17:48, Gene Heskett a écrit : >> >> >> I don't believe that will work. dd runs on the raw device, not to an >> artificially created "partition". > > > dd runs on any type of device, including partitions. > But it copies th

Re: drive names and UUIDs, was Re: Intresting dd fsck grub uuid fstab action

2017-06-03 Thread Joel Rees
(Google or something is screwing up the threading. My apologies if I mess it up further.) On Sun, Jun 4, 2017 at 7:30 AM, Fungi4All wrote: > >> From: deb...@lionunicorn.co.uk >> >>> Ι was waiting to see if anyone else found something like this significant >> and willing to contribute some wisdom

Re: drive names and UUIDs, was Re: Intresting dd fsck grub uuid fstab action

2017-06-03 Thread Fungi4All
From: deb...@lionunicorn.co.uk > Ι was waiting to see if anyone else found something like this significant and > willing to contribute some wisdom No wisdom here, I'm afraid. just evolution of the unix-dna > I suspect the experiment would be simple. > Let's say we make a new partition on a disk

Re: drive names and UUIDs, was Re: Intresting dd fsck grub uuid fstab action

2017-06-03 Thread tomas
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Sat, Jun 03, 2017 at 05:59:06PM +0200, Pascal Hambourg wrote: > Le 03/06/2017 à 17:48, Gene Heskett a écrit : > > > >I don't believe that will work. dd runs on the raw device, not to an > >artificially created "partition". > > dd runs on any type

Re: drive names and UUIDs, was Re: Intresting dd fsck grub uuid fstab action

2017-06-03 Thread Pascal Hambourg
Le 03/06/2017 à 18:04, David Wright a écrit : AIUI there's a race condition here, perhaps even several. The correct MBR should be read as normal by the BIOS, but grub then searches by UUID for the kernel/ramdisk, and the kernel searches by UUID for the root filesystem, and we don't know how it

Re: drive names and UUIDs, was Re: Intresting dd fsck grub uuid fstab action

2017-06-03 Thread David Wright
On Sat 03 Jun 2017 at 11:02:54 (-0400), Fungi4All wrote: > Ι was waiting to see if anyone else found something like this significant and > willing to contribute some wisdom No wisdom here, I'm afraid. > I suspect the experiment would be simple. > Let's say we make a new partition on a disk with

Re: drive names and UUIDs, was Re: Intresting dd fsck grub uuid fstab action

2017-06-03 Thread Pascal Hambourg
Le 03/06/2017 à 17:48, Gene Heskett a écrit : I don't believe that will work. dd runs on the raw device, not to an artificially created "partition". dd runs on any type of device, including partitions.

Re: drive names and UUIDs, was Re: Intresting dd fsck grub uuid fstab action

2017-06-03 Thread Gene Heskett
On Saturday 03 June 2017 11:02:54 Fungi4All wrote: > Original Message > From: deb...@lionunicorn.co.uk > To: debian-user@lists.debian.org > > On Thu 01 Jun 2017 at 12:24:28 (-0400), Fungi4All wrote: > > Why don't just skip all this that we are in perfect agreement with > > and go

Re: drive names and UUIDs, was Re: Intresting dd fsck grub uuid fstab action

2017-06-03 Thread Fungi4All
Original Message From: deb...@lionunicorn.co.uk To: debian-user@lists.debian.org On Thu 01 Jun 2017 at 12:24:28 (-0400), Fungi4All wrote: > Why don't just skip all this that we are in perfect agreement with and go to > the juicy part. > After all uuids are unique and fstab are

Re: drive names and UUIDs, was Re: Intresting dd fsck grub uuid fstab action

2017-06-02 Thread David Wright
On Thu 01 Jun 2017 at 12:24:28 (-0400), Fungi4All wrote: > Why don't just skip all this that we are in perfect agreement with and go to > the juicy part. > After all uuids are unique and fstab are all correct, updating-grub would mix > match uuids in writing > its grub.cfg > Two uuids on the sam

Re: drive names and UUIDs, was Re: Intresting dd fsck grub uuid fstab action

2017-06-01 Thread Fungi4All
Original Message Subject: drive names and UUIDs, was Re: Intresting dd fsck grub uuid fstab action From: joel.r...@gmail.com To: Fungi4All Fungi4All-san, I'll try explaining what we don't know whether you understand or not. I understand everything you have written

drive names and UUIDs, was Re: Intresting dd fsck grub uuid fstab action

2017-05-31 Thread Joel Rees
Fungi4All-san, I'll try explaining what we don't know whether you understand or not. First, about /dev/sda /dev/sdb ... When you turn the machine on, these "names" do not exist. Well, at least, the computer does not know which physical device is /dev/sda and which is /dev/sdb, etc. Whe