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#1 2013-07-11 15:58:52

jrussell
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From: Cape Town, South Africa
Registered: 2012-08-16
Posts: 510

[Solved] can one label a crypto_luks partition?

Does anyone know if its possible to label a crypto_luks partition? Id like to reference my cryptdevice in syslinux by label

cryptdevice=/dev/sda2:cryptroot

from https://wiki.archlinux.org/index.php/Dm … bootloader

Last edited by jrussell (2013-07-12 10:18:37)


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#2 2013-07-12 00:42:15

cfr
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From: Cymru
Registered: 2011-11-27
Posts: 7,129

Re: [Solved] can one label a crypto_luks partition?

I use the label from /dev/disk/by-partlabel/ which I probably assigned in gdisk to the partition. But I'm not sure if it has to be the same name.


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#3 2013-07-12 00:47:57

falconindy
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From: New York, USA
Registered: 2009-10-22
Posts: 4,111
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Re: [Solved] can one label a crypto_luks partition?

No, you can't. A label, by definition, is part of the filesystem. If the disk is GPT formatted, you can use a partition label.

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#4 2013-07-12 10:11:41

jrussell
Member
From: Cape Town, South Africa
Registered: 2012-08-16
Posts: 510

Re: [Solved] can one label a crypto_luks partition?

Cool thanks guys, I knew I'd seen a partition labeled before, probably when I was fiddling with GPT then. Too bad I havnt found a way to boot Windows 7 off a GPT disk.


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#5 2013-07-12 16:37:38

andy123
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Registered: 2011-11-04
Posts: 169
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Re: [Solved] can one label a crypto_luks partition?

IIRC windows needs UEFI in order to boot off GPT for some reason.


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#6 2013-07-12 17:33:32

WonderWoofy
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From: Los Gatos, CA
Registered: 2012-05-19
Posts: 8,414

Re: [Solved] can one label a crypto_luks partition?

andy123 wrote:

IIRC windows needs UEFI in order to boot off GPT for some reason.

I remember reading somewhere that there is in fact a way to get windows to boot in bios mode from a gpt disk and vice versa.  But it is really not a recommended way of going about things, and possibly not as reliable as one might hope (on an already less than reliable OS, that is no bueno).

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#7 2013-07-13 10:37:49

jrussell
Member
From: Cape Town, South Africa
Registered: 2012-08-16
Posts: 510

Re: [Solved] can one label a crypto_luks partition?

His looks like an option for me
http://www.rodsbooks.com/gdisk/hybrid.html

I don't have an EFI system.


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#8 2013-07-13 21:19:17

cfr
Member
From: Cymru
Registered: 2011-11-27
Posts: 7,129

Re: [Solved] can one label a crypto_luks partition?

Is it really wise to do that just to use a partition label? Given the problems with hybrid, I would personally want rather stronger reasons before even considering that option.


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#9 2013-07-13 21:21:11

jrussell
Member
From: Cape Town, South Africa
Registered: 2012-08-16
Posts: 510

Re: [Solved] can one label a crypto_luks partition?

Ya I read most of that page, I have nothing to loose but time, Ill fiddle with it and report back. I guess I dont really need it,

Last edited by jrussell (2013-07-13 21:21:27)


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