09-19-2012
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.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I'm confused. Originally I did
telinit 1
cp /dev/sda /dev/sdb
where sda is my boot disk and sdb is a USB disk. This probably copied my MBR.
Since /dev/sdb is 300GB and /dev/sda only 160GB I had a bunch of space left which I decided to experiment with by creating partitions of various... (1 Reply)
Discussion started by: siegfried
1 Replies
2. UNIX for Dummies Questions & Answers
Hi
Can anyone tell me how to delete GPT signatures in linux/unix.
Thanks
Tannu (3 Replies)
Discussion started by: tannu
3 Replies
3. Red Hat
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
4. Boot Loaders
Hi,
short thing: I've done something I didn't know what happens; bad thing: I did it with my partition table. :D
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... (3 Replies)
Discussion started by: Blackbird
3 Replies
5. UNIX for Dummies Questions & Answers
hi
so i am a noob to linux but not computers in general and have decided i want to give linux a go. because i like to make things hard for myself and because someone told me i wouldnt be able to figure it out iv decided to try arch
so iinstalled it last night and it installed fine and i got... (0 Replies)
Discussion started by: Irish
0 Replies
6. Boot Loaders
trying to recover a lost partition table, where the signature (0x55AA) has been lost, though attempting to restore using a number of tools (fdisk, testdisk et al) the write fails.
also the os is unable to read the disk geometry correctly, after attempting to correct the geometry, the updated... (2 Replies)
Discussion started by: xaphan
2 Replies
7. Emergency UNIX and Linux Support
Need help/advice urgently.:wall:
I really shot myself in the foot this time. Here is the scenario
Have a Solaris server Solaris 10 x86 Update 8.
Installed an LSI MegaRaid 9280 raid controller and attached a 16 bay JBOD box to it, created a RAID6 virtual drive with 1 hot spare.
Created a... (2 Replies)
Discussion started by: ccj4467
2 Replies
8. Windows & DOS: Issues & Discussions
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
9. Red Hat
(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
10. Emergency UNIX and Linux Support
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
SD(4) Linux Programmer's Manual SD(4)
NAME
sd - Driver for SCSI Disk Drives
SYNOPSIS
#include <linux/hdreg.h> /* for HDIO_GETGEO */ #include <linux/fs.h> /* for BLKGETSIZE and BLKRRPART */
CONFIG
The block device name has the following form: sdlp, where l is a letter denoting the physical drive, and p is a number denoting the parti-
tion on that physical drive. Often, the partition number, p, will be left off when the device corresponds to the whole drive.
SCSI disks have a major device number of 8, and a minor device number of the form (16 * drive_number) + partition_number, where drive_num-
ber is the number of the physical drive in order of detection, and partition_number is as follows:
partition 0 is the whole drive
partitions 1-4 are the DOS "primary" partitions
partitions 5-8 are the DOS "extended" (or "logical") partitions
For example, /dev/sda will have major 8, minor 0, and will refer to all of the first SCSI drive in the system; and /dev/sdb3 will have
major 8, minor 19, and will refer to the third DOS "primary" partition on the second SCSI drive in the system.
At this time, only block devices are provided. Raw devices have not yet been implemented.
DESCRIPTION
The following ioctls are provided:
HDIO_GETGEO
Returns the BIOS disk parameters in the following structure:
struct hd_geometry {
unsigned char heads;
unsigned char sectors;
unsigned short cylinders;
unsigned long start;
};
A pointer to this structure is passed as the ioctl(2) parameter.
The information returned in the parameter is the disk geometry of the drive as understood by DOS! This geometry is not the physical
geometry of the drive. It is used when constructing the drive's partition table, however, and is needed for convenient operation of
fdisk(1), efdisk(1), and lilo(1). If the geometry information is not available, zero will be returned for all of the parameters.
BLKGETSIZE
Returns the device size in sectors. The ioctl(2) parameter should be a pointer to a long.
BLKRRPART
Forces a re-read of the SCSI disk partition tables. No parameter is needed.
The scsi(4) ioctls are also supported. If the ioctl(2) parameter is required, and it is NULL, then ioctl() will return -EINVAL.
FILES
/dev/sd[a-h]: the whole device
/dev/sd[a-h][0-8]: individual block partitions
SEE ALSO
scsi(4)
1992-12-17 SD(4)