Is it possible to extend a extended partition raw space in harddisk thru rhel 6


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Operating Systems Linux Red Hat Is it possible to extend a extended partition raw space in harddisk thru rhel 6
# 1  
RedHat Is it possible to extend a extended partition raw space in harddisk thru rhel 6

hi all,

As going thru LVM concepts in rhel 6, got hit with a question about "how to use the raw partition of an harddisk which extended volume is taken a bit"

please find the attached diagram...

is it possible to use this raw space with previously created extended partition without data loss or do we have to delete the previously created extended partition and create again with raw space ?
Is it possible to extend a extended partition raw space in harddisk thru rhel 6-partitionpng
# 2  
If the raw space is not in "in the middle" of two partitions and the cylinders are contiguous to the existing extended partition then you can do it directly with fdisk with little risk.

Note that you'll also need to extend the filesystem.

It's uncommon however to leave "raw" space like that since you cannot really use it - there are a few exceptions to the rule but usually they belong to very specialized software... TeraData comes to mi mind.
# 3  
but once i created three primary partition and remaining raw space was 10G and i used that 5G from that 10G raw space for extended. after created that 5G of extended i was not able to created the remaining raw space 5G for extended.
it messaged like "no free sectors available"

it means i cant use the raw 5G as extended with fdisk command ??
# 4  
This is why LVM is useful. LVM doesn't care about contiguous space. To LVM, any block device space is usable space, doesn't matter where it is.

But I'm assuming you aren't running LVM. In order to give a more detailed answer, need to know what sort of partition table youre using (MSDOS?) and what type of partitions (primary or extended) each one is.

Typically it's no big deal to extend the partition, then grow the filesystem into the new space.
# 5  
@ lupin..the..3rd

Actually i am asking about the raw partition under a harddisk of 3 primary and 1 extended,remaining raw partition << pls look in to the diagram for more explanation.
# 6  
Quote:
Originally Posted by redhatlbug
@ lupin..the..3rd

Actually i am asking about the raw partition under a harddisk of 3 primary and 1 extended,remaining raw partition << pls look in to the diagram for more explanation.
What does "raw partition" mean? By "raw partition", you mean unpartitioned space? If so, the process is easy.

1. Unmount the filesystem. If you cannot unmount it, then boot the PC using a live CD.
2. Use Fdisk to increase the size of the partition.
3. If the kernel was unable to re-read the partition table, reboot.
4. Now use resize2fs to grow the filesystem into the new space.
This User Gave Thanks to lupin..the..3rd For This Post:
# 7  
if you are ready to use tool to accomodate your disks remaining raw space to any partition and you don't have problem in using tools then you can try gparted live CD ISO from this link GParted -- Download

boot your machine using this LIVE CD and use its GUI interface to resize your native Linux partitions.. you can check procedure at GParted -- GParted Manual
This User Gave Thanks to parth_buch For This Post:
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