LinuxQuestions.org
Latest LQ Deal: Latest LQ Deals
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie
User Name
Password
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!

Notices


Reply
  Search this Thread
Old 04-21-2017, 12:42 AM   #1
BIGSTUD
LQ Newbie
 
Registered: Apr 2017
Posts: 6

Rep: Reputation: Disabled
MBR vs GPT


I've used the mbr table for years. I never tried gpt table because it seem too complex to use. But now, I have a much better understanding of it. My question is -- is there a performance boost over mbr? I mean can data be read faster and written faster by having a gpt table. Thanks
 
Old 04-21-2017, 02:53 AM   #2
BIGSTUD
LQ Newbie
 
Registered: Apr 2017
Posts: 6

Original Poster
Rep: Reputation: Disabled
Can I have one HD be mbr and the other gpt?
 
Old 04-21-2017, 03:19 AM   #3
syg00
LQ Veteran
 
Registered: Aug 2003
Location: Australia
Distribution: Lots ...
Posts: 19,792

Rep: Reputation: 3575Reputation: 3575Reputation: 3575Reputation: 3575Reputation: 3575Reputation: 3575Reputation: 3575Reputation: 3575Reputation: 3575Reputation: 3575Reputation: 3575
No
Yes
 
Old 04-21-2017, 04:06 AM   #4
JJJCR
Senior Member
 
Registered: Apr 2010
Posts: 1,862

Rep: Reputation: 338Reputation: 338Reputation: 338Reputation: 338
MBR < capacity 2TB = ok
MBR > capacity 2TB = might not recognize all space

GPT > capacity 2TB = ok
GPT < capacity 2TB = ok

Conclusion: It's your call. Make a choice.
 
Old 04-21-2017, 04:51 AM   #5
hazel
LQ Guru
 
Registered: Mar 2016
Location: Harrow, UK
Distribution: LFS, AntiX, Slackware
Posts: 5,587
Blog Entries: 16

Rep: Reputation: 3316Reputation: 3316Reputation: 3316Reputation: 3316Reputation: 3316Reputation: 3316Reputation: 3316Reputation: 3316Reputation: 3316Reputation: 3316Reputation: 3316
Also gpt does away with the kludge of having "logical disks" inside an "extended partition" to get around the primary partition limit of 4. A gpt disk can have as many primary partitions as you like. Plus it has a built-in backup for the partition table if that gets corrupted. Plus it will boot under both uefi and mbr.
 
Old 04-21-2017, 05:09 AM   #6
syg00
LQ Veteran
 
Registered: Aug 2003
Location: Australia
Distribution: Lots ...
Posts: 19,792

Rep: Reputation: 3575Reputation: 3575Reputation: 3575Reputation: 3575Reputation: 3575Reputation: 3575Reputation: 3575Reputation: 3575Reputation: 3575Reputation: 3575Reputation: 3575
Quote:
Originally Posted by hazel View Post
Plus it will boot under both uefi and mbr.
As will an MBR formatted disk (UEFI and BIOS).
 
Old 04-21-2017, 05:12 AM   #7
Shadow_7
Senior Member
 
Registered: Feb 2003
Distribution: debian
Posts: 4,137
Blog Entries: 1

Rep: Reputation: 873Reputation: 873Reputation: 873Reputation: 873Reputation: 873Reputation: 873Reputation: 873
Some bios / cmos / uefi / ... do not support booting from GPT. If you have a disk > 2TB, then you have to use GPT or give up all the space > 2TB. Otherwise the "can you boot it" dilemma makes the choice for you.
 
Old 04-21-2017, 06:08 AM   #8
BIGSTUD
LQ Newbie
 
Registered: Apr 2017
Posts: 6

Original Poster
Rep: Reputation: Disabled
My bios supports UEFI and Legacy modes and there is also an option to use both at the same time. My hd is 1 terabyte. The reason I want to go GPT is because MBR is dated and I hate the extended/logical partition scheme.

Since my bios supports UEFI, I think I can use GPT.

Much obliged to all members here
 
Old 04-21-2017, 06:35 AM   #9
Habitual
LQ Veteran
 
Registered: Jan 2011
Location: Abingdon, VA
Distribution: Catalina
Posts: 9,374
Blog Entries: 37

Rep: Reputation: Disabled
Quote:
Originally Posted by BIGSTUD View Post
My bios supports UEFI and Legacy modes and there is also an option to use both at the same time. My hd is 1 terabyte. The reason I want to go GPT is because MBR is dated and I hate the extended/logical partition scheme.

Since my bios supports UEFI, I think I can use GPT.

Much obliged to all members here
I have such a BIOS (CMOS gets no love)
Code:
Machine:   System: Gigabyte product: N/A
           Mobo: Gigabyte model: Z77-DS3H v: x.x Bios: American Megatrends v: F7 date: 07/12/2012
gpt here.

However, I have not installed using the UEFI selection.

Thanks a lot, now there's "a list". Grr!

"the list":
Code:
ST1000DM003-9YN1 sda    931.5G                                                   
                 ├─sda1   8.4G ext4         06e2fecb-69d9-46a2-a3b9-d525df6843ec /
                 ├─sda2     1K                                                   
                 ├─sda5   2.8G ext4         694ab374-b4b9-4197-ac12-ea641cb02f69 /var
                 ├─sda6  31.9G swap         5817fe96-3fdb-4795-992b-aba8b53caa76 [SWAP]
                 ├─sda7   380M ext4         accaced2-19b0-479c-b7a8-a0c532c862f1 /tmp
                 └─sda8   888G ext4         5c59b145-0add-4c41-b03d-beeadf3bd574 /home
and those aren't default, except to me.
I made "/" and "[swap]" and committed to disk. The installer did the rest.

Last edited by Habitual; 04-21-2017 at 06:40 AM.
 
Old 04-21-2017, 07:24 AM   #10
aragorn2101
Member
 
Registered: Dec 2012
Location: Mauritius
Distribution: Slackware
Posts: 553

Rep: Reputation: 277Reputation: 277Reputation: 277
Quote:
Originally Posted by BIGSTUD View Post
My bios supports UEFI and Legacy modes and there is also an option to use both at the same time. My hd is 1 terabyte. The reason I want to go GPT is because MBR is dated and I hate the extended/logical partition scheme.

Since my bios supports UEFI, I think I can use GPT.

Much obliged to all members here
Hi,

GPT was invented so that your machine can cope with disks larger than 2TB. So, sooner or later, everything will have to move. Since your BIOS already supports UEFI, then it's alright to switch to GPT. After all, your system was made to use it.

My advise would be to stick to only one mode. If you use UEFI, you use only UEFI and GPT.

But, to answer one of your earlier questions: technically, if you have a BIOS running in "MBR" mode, you can have both an MBR disk and a GPT disk, but you cannot boot from the GPT disk, you can only use it for storage. I have a PC in that status right now.
And I noticed that if you have a BIOS running in "UEFI" mode, you still can have both type of disk formats but then you can only boot from the GPT disk.
 
Old 04-21-2017, 07:36 AM   #11
BIGSTUD
LQ Newbie
 
Registered: Apr 2017
Posts: 6

Original Poster
Rep: Reputation: Disabled
Quote:
Originally Posted by Habitual View Post
I have such a BIOS (CMOS gets no love)
Code:
Machine:   System: Gigabyte product: N/A
           Mobo: Gigabyte model: Z77-DS3H v: x.x Bios: American Megatrends v: F7 date: 07/12/2012
My setup:

Motherboard

Manufacturer: Gigabyte Technology Co., Ltd.
Product Name: B75M-D3H

Bios

Vendor: American Megatrends Inc.
Version: F12
Release Date: 10/26/2012
 
Old 04-21-2017, 07:48 AM   #12
JeremyBoden
Senior Member
 
Registered: Nov 2011
Location: London, UK
Distribution: Debian
Posts: 1,895

Rep: Reputation: 469Reputation: 469Reputation: 469Reputation: 469Reputation: 469
You can still boot from a USB that has a MBR but mount some GPT disks.
 
Old 04-21-2017, 12:42 PM   #13
sundialsvcs
LQ Guru
 
Registered: Feb 2004
Location: SE Tennessee, USA
Distribution: Gentoo, LFS
Posts: 9,240
Blog Entries: 4

Rep: Reputation: 3263Reputation: 3263Reputation: 3263Reputation: 3263Reputation: 3263Reputation: 3263Reputation: 3263Reputation: 3263Reputation: 3263Reputation: 3263Reputation: 3263
One way or the other, all of my systems seem to have GUID partition tables, and it seems most-natural today to use them.

I think that you're fairly unlikely to encounter a machine today that might not recognize them – except for the leftover machines in your hall closet.

The only difference between the two formats is expressiveness – and the size of the integers which describe the location of the partitions themselves. If your BIOS supports GPT – and it almost certainly does – I would simply use that. And, as others have already said, I would be consistent.

Last edited by sundialsvcs; 04-21-2017 at 12:44 PM.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
relationship between MBR, GPT, UEFI xiongnu Linux - General 5 12-17-2015 05:05 PM
GPT vs MBR asipper Linux - General 9 12-23-2011 08:29 PM
GPT MBR Mismatch NickL Linux - Newbie 0 08-20-2011 06:31 AM
[SOLVED] Slackware 13.37 - gdisk choices, MBR, GPT or Blank GPT CFet Slackware - Installation 3 04-01-2011 04:46 PM
GPT to MBR mrwall-e Linux - Software 3 08-26-2010 09:00 PM

LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie

All times are GMT -5. The time now is 05:12 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration