Sponsored Content
Special Forums Hardware Boot Loaders GPT/Protective MBR problem... Post 302470256 by Blackbird on Tuesday 9th of November 2010 03:07:47 PM
Old 11-09-2010
GPT/Protective MBR problem...

Hi,

short thing: I've done something I didn't know what happens; bad thing: I did it with my partition table. Smilie

My OS is Ubuntu 10.10. I've used GPT and now want to convert it to MBR with gdisk.
I started gdisk, chose 'r' for "transformation options" and chose 'g' to "convert GPT into MBR and exit".
Then I rebooted. Now all my programs tell me something other:

fdisk says the following (language is german):
Code:
   Gerät  boot.     Anfang        Ende     Blöcke   Id  System
/dev/sda1               1      121602   976762583+  ee  GPT

gdisk says it to be a protective MBR, but '-l' switch doesn't print any partition:
Code:
GPT fdisk (gdisk) version 0.5.1

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.

The kernel doesn't seem to detect anything, only sda* thing is /dev/sda.

partitionmanager says that there is no valid partition table.

Now, what should I do? Stupid thing is that I missed to make a backup of my first sectors before. Smilie
Remember, the only thing I want is to be able to read my partitions on sda again and to have an MBR on it in the end.


Blackbird

Last edited by Blackbird; 11-09-2010 at 04:31 PM..
 

6 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Delete gpt signatures

Hi Can anyone tell me how to delete GPT signatures in linux/unix. Thanks Tannu (3 Replies)
Discussion started by: tannu
3 Replies

2. Red Hat

RHEL4 easyRAID problem 2tb gpt xfs

hello community, i have problems with my redhat enterprise linux 4 nanhant 6 and my easyraid x8s (8x1tb) extern fibre channel raid extern raid configuration: raid level 5 (8x1tb) redhat system shows me four 2tb partitions and one 450gb partition from my raid :( why????? i have... (1 Reply)
Discussion started by: onkeldave
1 Replies

3. Fedora

Disk Paritioning Scheme--GPT or MBR

Hi, I just built myself a new machine which has an ASUS motherboard with is UEFI based. I noticed after I installed Fedora 17 that my sda is MBR and my sdb is GPT: sda is a ssd drive. Should the ssd drive be GPT or is MBR okay? sda is 60Gb drive. (3 Replies)
Discussion started by: mojoman
3 Replies

4. Windows & DOS: Issues & Discussions

Installing Windows 7 on a GPT drive

Hello, My hard drive was formatted with GPT. It is part of a volume group and has two logical volumes on it. Is it possible to convert the drive to MBR? If so, how would I got about doing it? I know there are programs out there that do it, but I have volume groups with LVM's so I am wondering if... (1 Reply)
Discussion started by: mojoman
1 Replies

5. Red Hat

GPT Partitions

(Don't you hate being on holiday and being the only IT person in the family?) Got a wonderful thanksgiving surprise .. dead windows-8 laptop with "important" unbacked-up data. No worries, I have my my fedora labtop and a magical SATA to USB converter. Plugged in the drive, and ... can't mount... (4 Replies)
Discussion started by: derekludwig
4 Replies

6. Emergency UNIX and Linux Support

2nd hdd is Linux_lvm can't mount MBR on BSD with GPT

rying it this way, because I can't handle the slices for the second hdd. If there is someone on this forum who can help me out of that misery, he would really save my digital life in this digital ocean. So not giving up, reading several times the manual of gpart. But the best hint in all that... (0 Replies)
Discussion started by: 1in10
0 Replies
FDISK(8)						    BSD System Manager's Manual 						  FDISK(8)

NAME
acorn-fdisk -- partition editor for Acorn/RISC OS machines SYNOPSIS
acorn-fdisk -h | --help | -v | --version acorn-fdisk [-t scheme | --type scheme] -l | --list [device ...] acorn-fdisk [-t scheme | --type scheme] -s | --size partition acorn-fdisk [-t scheme | --type scheme] [device] DESCRIPTION
The acorn-fdisk utility allows one to display or interactively edit partition tables for Acorn/RISC OS machines in various formats. Using the PC/BIOS format, standard IBM PC (i386) partition tables can also be accessed. When no optional device is given, it defaults to /dev/hda or /dev/sda. The options are as follows: -h | --help Display a short usage and exit immediately. -l | --list Display the partition table(s) of all devices. -s | --size Display the size of partition. -t | --type Select the partitioning scheme to use. Valid schemes are: EESOX Eesox SCSI on the Acorn machines. ICSIDEFS ICS IDE. Filecore/Linux Linux on Filecore. This uses the non-ADFS descriptor to point to the start of the disc to be partitioned. The first two sectors contain a partition table to identify the Linux partitions contained within. PC/BIOS PC/BIOS partitioning scheme. This consists of a partition table in the first sector of the disk which contains both CHS and LBA values for the partitions. There can be up to four entries in the primary partition table. One of these can be an extended partition containing up to four extra partitions. PowerTec PowerTec SCSI on the Acorn machines. Filecore/RISCiX RiscIX on Filecore. -v | --version Display the version of acorn-fdisk and exit immediately. If neither -l | --list or -s | --size are given, the partition table of the given device will be edited interactively. EXAMPLES
Display the default device's partition table on a PC: acorn-fdisk --type PC/BIOS -l Display the PC partition table of /dev/sda: acorn-fdisk --type PC/BIOS --list /dev/sda Display the size in blocks of the partition /dev/sda1: acorn-fdisk --type PC/BIOS --size /dev/sda1 Edit the MBR partition table interactively: acorn-fdisk --type PC/BIOS Display the partition table of an MBR backed up to a file: acorn-fdisk -t PC/BIOS -l mbrdump.bin Display the size of the first partition on a device where the MBR would be restored from the backup file mbrdump.bin: acorn-fdisk -t PC/BIOS -s mbrdump.bin1 AUTHORS
arm-fdisk was written by Russell King <rmk@arm.uk.linux.org> based on util-linux fdisk, which was written at least partially by A. V. Le Blanc <LeBlanc@mcc.ac.uk>. This manual page was written for the Debian system by Thorsten Glaser <tg@debian.org> but may be used by others. BSD
October 2, 2010 BSD
All times are GMT -4. The time now is 03:44 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy