04-12-2012
Quote:
Originally Posted by
Corona688
fdisk is meant to manage raw MSDOS partitions and related types, and has never done anything else. If you think it would be so easy to nail new and unrelated functionality onto the side, you're welcome to, but if you make even the most minor error, people will crucify you for ruining their data. Writing a partition editor isn't something to be done in an offhand manner.
Microsoft mostly still uses this boot schema too, making it very hard to avoid, and the better alternatives aren't universally supported. Not really. gdisk is GNOME I believe, while parted runs anywhere, doesn't even need a GUI. That's crucial if you want to edit partitions in rescue-cd conditions, or do any kind of automatic partition editing.
Anyway, you're mistaking the forest for the trees again. It's not the partition editor which overcomes the limitations -- the partition editor doesn't get stored in the boot sector, after all. It's the partition types themselves. MSDOS partitions have these limitations. Some more modern partition editors can write GPT partition tables, which overcome these limits.
Thanks Mod that was very informative.
---------- Post updated at 10:15 PM ---------- Previous update was at 10:10 PM ----------
Quote:
Originally Posted by
Corona688
Microsoft mostly still uses this boot schema too, making it very hard to avoid, and the better alternatives aren't universally supported.
Can you put more focus on why there is a dependency on Microsoft when both are different product ? Are you leaning towards dual boot?
Quote:
Originally Posted by
Corona688
Some more modern partition editors can write GPT partition tables, which overcome these limits.
If MS-Dos partition is old then How microsoft is dealing with the issue? I know this is not something to be posted in LQ but still curious to know.
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KPARTX(8) Linux Administrator's Manual KPARTX(8)
NAME
kpartx - Create device maps from partition tables
SYNOPSIS
kpartx [-a | -d | -l] [-v] wholedisk
DESCRIPTION
This tool, derived from util-linux' partx, reads partition tables on specified device and create device maps over partitions segments
detected. It is called from hotplug upon device maps creation and deletion.
OPTIONS
-a Add partition mappings
-r Readonly partition mappings
-r Read-only partition mappings
-d Delete partition mappings
-u Update partition mappings
-l List partition mappings that would be added -a
-p set device name-partition number delimiter
-f force creation of mappings; overrides 'no_partitions' feature
-g force GUID partition table (GPT)
-v Operate verbosely
-s Sync mode. Don't return until the partitions are created
EXAMPLE
To mount all the partitions in a raw disk image:
kpartx -av disk.img
This will output lines such as:
loop3p1 : 0 20964762 /dev/loop3 63
The loop3p1 is the name of a device file under /dev/mapper which you can use to access the partition, for example to fsck it:
fsck /dev/mapper/loop3p1
When you're done, you need to remove the devices:
kpartx -d disk.img
SEE ALSO
multipath(8) multipathd(8) hotplug(8)
AUTHORS
This man page was assembled By Patrick Caulfield for the Debian project. From documentation provided by the multipath author Christophe
Varoqui, <christophe.varoqui@opensvc.com> and others.
July 2006 KPARTX(8)