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2answers
69 views

How does BIOS bootloader know which disk to use?

As I understand it, the GRUB bootloader on a BIOS system (and most other bootloaders for that matter) are comprised of 3 parts. The first part (stage 1) is stored in the first 448 bytes, which is ...
0
votes
0answers
17 views

How to diagnose the difference in OS performance between installation media?

I have two different USB sticks, a 128 GB Samsung and a 64 GB SanDisk. I used Gnome Disks to benchmark both of them and the Samsung one was supposedly better, it had faster read and write speed but it ...
2
votes
1answer
49 views

Installing Debian on a USB hdd doesn't not prompt me where to install GRUB

I'm trying to install Debian to a partition (not the whole disk) on my external HDD. I'm choosing the "Manual partition" option where I select my 100GB partition as root "/" of my external hdd. The ...
0
votes
1answer
76 views

can i use dd to copy my dual boot HDD(350G) to smaller SSD(120GB) with only one of two OS from HDD

I Have a dual boot machine (windows+ubuntu) with 350 GB HDD. I wish to clone only ubuntu to the 120GB SDD. How can I accomplish this. PS: I have copied Linux partition(sda5) to SDD using "dd", What i ...
-1
votes
1answer
77 views

Did I overwrite my Linux installation?

Background info: I have 2 physical hard drives, on the primary was Ubuntu and the secondary I had Solus installed. The Ubuntu install was installed with the partition and Home directory encrypted. I ...
3
votes
2answers
20k views

GRUB menu doesn't appear after Ubuntu install alongside with Windows 10

I shrunk Windows partition, freed 100 Gb, installed Ubuntu into it, installed GRUB into into MBS of the first drive and after reboot I got Windows and with no any option to select. Even in BIOS in ...
3
votes
1answer
21k views

How to use os-prober to find MS-Windows boot data?

I saw Dual boot - Installed arch and windows entry disappeared on grub and I have the same/similar problem. I have Grub and it shows only Debian setup and not MS-Windows. I also tried the following ...
0
votes
1answer
869 views

Arch Linux: GRUB does not load after installation

I have installed windows 10 in my laptop in BIOS Legacy mode.I have 3 primary partitions including the Windows partition and have extended partition with 2 more logical partitions. Now for installing ...
0
votes
1answer
808 views

How to set MBR to Linux Partition instead of GRUB

I have a Linux Mint 17.1 Partition at /dev/sda1 and another Mint 17.1 Partition at /dev/sda5. How do I set the MBR to boot into /dev/sda1 instead of the GRUB menu? I know how to use GParted to delete ...
2
votes
1answer
319 views

How to reduce ext4 rootlv on centos 6

Is there a way to perform a safe reduce in rootlv at rescue mode? Most of the internet's explanations tells, basically, that it can be done using the following steps sequence: vgchange; fsck; ...
0
votes
0answers
143 views

Change default OS loading

Installed Ubuntu 12.04 Feb 2014 - upgraded to 14.04LTS. I believe there is still remnants of older OS's still there somewhere, (they appear on the Grub multi-boot menu at start up). An earlier ...
2
votes
2answers
7k views

Installing GRUB in a dual-boot

I've just installed my OSes on a new HDD: Windows 7 and Debian 7. As usual I first installed Windows, then Debian. At the first attempt, GRUB seems to not have been installed properly, because my ...
1
vote
0answers
55 views

For what are disk signatures being used for by GNU/Linux (distributions) / grub?

I am talking about disk signatures in context of the MBR. The area from 441 to 445 bytes. For what does the GNU/Linux kernel, GNU/Linux distributions usually use disk signatures for? I only found ...
1
vote
1answer
2k views

How to change the disk signature of a raw image?

I am talking about disk signatures in context of the MBR. The area from 440 to 444 bytes. Let's say I got a bootable raw image (bootable in a virtual machine). How can I set the disk signature to a ...
-2
votes
2answers
6k views

Can I delete the MBR from GRUB? [closed]

Can I delete the Master Boot Record from GRUB? If so, how?
3
votes
2answers
5k views

How to restore GRUB after windows XP installation?

After I've installed windows xp for dual booting, I need to restore grub of my archlinux installation. I did it a lot of times with windows 7, but this time heavens decided to torture me. I have ...