Help needed to understand partitions in linux Post: 302415691

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Top Forums UNIX for Dummies Questions & Answers Help needed to understand partitions in linux Post 302415691 by Celtic_Monkey on Friday 23rd of April 2010 06:39:33 AM

04-23-2010

Registered User

Quote:

Originally Posted by pinga123

Hi guys,

It has been more than 2 month i switched to linux but i m still very much confused how linux handles and names the partitions.

I have gone through couple of beginners material and found linux doesnt treat partitions as c: and d: instead it uses /dev/hda1 /dev/hda2 hda3 .But now i have come across something like dev/sda1 dev/sda5 tmpfs

Please find output of df -h

PHP Code:


 [root@test ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda3             3.9G  867M  2.9G  24% /
/dev/sda1              99M   45M   49M  48% /boot
tmpfs                 285M     0  285M   0% /dev/shm
/dev/sda5             1.1T  561G  544G  51% /var/ovs/mount/F179080BDBFD4C5596D03242EFE5179C

I have few questions regarding the same.
1)Why there is no sda2 sda 4 present?
2)What is tmpfs ?
3)What is the difference between sda and hda
4)I also heard there is something as LVM.(How do i know whether my drives are LVM supported or not?
If they are supported how do i extend the drives.

I know these are pretty basic for advance user but i m still a learner in linux . Please help.

tempfs is a temp file system in memory - more like a ram disk (not to be confused with swap space)

hda - normal IDE disks
sda are disks using SCSI emulation built into the kernel
you can partition (and hence number the partitions) differently during the install phase - all depends on how you partitioned your disk

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