Questions tagged [mbr]

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5
votes
1answer
3k views

Overwritten MBR: Is partial/complete recovery possible?

I have a Sony VIAO laptop setup as dual boot (Ubuntu 12.10/Windows 7). Since I wanted to try Archlinux, I installed VirtualBox in Ubuntu. To create a bootable USB stick (from the ISO image on my hard ...
0
votes
1answer
243 views

How to repair a 500GB HD showing itself as only 10MB?

I have a 500GB USB HD. I have been messing around with the dd cmd - erasing MBR data, copying my windows internal HD, eleting partitions, etc. fdisk -l returns Disk /dev/sdc: 10MiB, 10485760 bytes, ...
0
votes
1answer
736 views

Can the EFI System Partition be a logical partition on MBR disks?

I'm finding a lot of information concerning the ESP inside GPT disks, but none about them being inside an MBR based disk as a logical partition. The thing is, I don't want to convert my disk to GPT ...
32
votes
5answers
140k views

Remove GPT - Default back to MBR

I keep receiving this error: Warning!! Unsupported GPT (GUID Partition Table) detected. Use GNU Parted I want to go back to the normal MBR. I found some advice here and did: parted /dev/sda ...
7
votes
3answers
14k views

Should I use fdisk for partitioning or GPT aware tools?

Question: Should I use fdisk when creating partitions? Or is it advisable to use parted since it uses GPT? (by default?) And with that I can create partitions larger than 2TB.
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 ...
8
votes
3answers
3k views

Linux/GParted can see partition table but dd bs=512 count=1 can't

I have an MBR formatted sd card and when connect to a Linux machine (xubuntu 12.04) it can mount a partition and parse the file system (as can GParted). However, when I try to read the MBR from the ...
2
votes
1answer
10k views

fdisk: partition contains a ntfs signature. remove it?

I'm installing NixOs on a ThinkPad X220. Though I'm very comfortable in the shell, it's the first time I've set up my own system, and I'm running into some unknowns while trying to partition the hard ...
2
votes
4answers
9k views

Unable to boot the operating system

I installed Lubuntu 11.10 and it run without problems. I decided to install Ubuntu 11.10 mini instead of Lubuntu 11.10. After the installation the operating system didn't boot. I only saw the black ...
2
votes
3answers
7k views

MBR size is 440 bytes or 512 bytes

I remembered reading one question how would you back up the MBR of a disk. Two of the choices are dd if=/dev/sda of=/dev/sdb bs=512 count=1 dd if=/dev/sda of=/dev/sdb bs=440 count=1 and the ...
2
votes
1answer
2k views

fdisk warning message: (Extended) Partition does not start on physical sector boundary

When I run fdisk, I get a warning message: Partition table entries are not in disk order Here is an example of the command I'm executing and its output: sudo fdisk -l [sudo] password for phil: ...
1
vote
2answers
124 views

Is my server still using a grub-legacy (GRUB 1) MBR?

When Debian updated to GRUB 2 (package grub-pc), it didn't automatically upgrade the MBR. Instead it configured the old GRUB 1 installation so that it will chainload GRUB 2; that way administrators ...
0
votes
1answer
94 views

Installation and booting scenarios for combinations of boot sector (GPT or MBR), firmware (BIOS or UEFI)?

I think all the confusions in this post come from coexistence of old and new technologies and abuse of terminology such as mentioned in https://en.wikipedia.org/wiki/...