From: cs@zip.com.au (Cameron Simpson)
Subject: Re: [LinuxRedHatInstall] mount syntax
Date: 29 Nov 1999 00:00:00 GMT
Message-ID: <19991129102838.A17266@ixus.research.canon.com.au>
Approved: newsgate@newsgate.IAEhv.nl
References: <3841A71A.9B040F73@home.com>
Organization: IAE newsgate
Followup-To: poster
Reply-To: cs@zip.com.au
Newsgroups: linux.redhat.install

On Sun, Nov 28, 1999 at 03:05:14PM -0700, CS wrote:
| how do i mount my other hard drive into a linux directory?

Basicly you say
	mount -t type device mountpoint
where "type" is the filesystem type (ext2, FAT, etc), "device" is the
name of the UNIX device representing the drive (or more commonly for
hard drives, the partition of the drive which has the filesystem you
wanted to mount) and "mountpoint" is where the filesystem will appear
in the UNIX directory tree.  This is detailed under "man mount".

Your first IDE hard disc is named "/dev/hda", your second "hdb" and so
forth. SCSI discs are named "/dev/sda", "sdb" etc. Those are named for the
device as a whole (the whole disc, not slices (aka partitions) of it).

Supposing your second disc is named "/dev/hdb", then the partitions are
named "hdb1", "hdb2" etc. You can find out what partitions are on a
disc (assuming it _is_ partitioned, which fixed discs tend to be and
removable discs tend not to be) by saying:
	fdisk -l /dev/hdb
to list the partitions. For our boot disc (hda) here I get:

	[home/cameron]#janus*> fdisk -l /dev/hda

	Disk /dev/hda: 32 heads, 63 sectors, 330 cylinders
	Units = cylinders of 2016 * 512 bytes

	   Device Boot    Start       End    Blocks   Id  System
	/dev/hda1            34       307    276192    6  FAT16
	/dev/hda2           308       329     22176   83  Linux
	/dev/hda3   *         1         2      1984+   a  OS/2 Boot Manager
	/dev/hda4             3        33     31248   16  Hidden FAT16

This shows that this disc has 4 partitions. The main two are hda1 and hda2,
being the old Windows C drive (hda1) and the LINUX /boot partition (hda2).
You can see the Boot Manager there (this is/was a multiboot machine) on
partition hda3.

We choose to mount the legacy Windoze drives under /mnt on our Linux box,
so C: is mounted as /mnt/C, so forth. To mount that:
	- The mount point must exist, so
		mkdir /mnt/C
		chmod 755 /mnt/C
	  This need be done just once.
	- Mount the partition onto that directory. From the above table
	  you can see that the FAT16 partition is named "/dev/hda1", so:
		mount -t vfat /dev/hda1 /mnt/C
	  "vfat" is a Linux filesystem driver which recognises FAT16 and
	  FAT32 Windows filesystems.

Now you can ls the /mnt/C directory etc. Thus:

	[home/cameron]#janus*> ls /mnt/C
	Program Files  config.sys   ffastun.ffo   msdos.---     setuplog.old  windows
	autoexec.bat   detlog.old   ffastun0.ffx  msdos.sys     setuplog.txt
	bootlog.prv    detlog.txt   ibminst       netlog.txt    suhdlog.dat
	bootlog.txt    ffastun.ffa  io.sys        recycled      system.1st
	command.com    ffastun.ffl  logo.sys      scandisk.log  temp

To make this happen at boot time you need to make an entry in your
/etc/fstab file, which lists filesystems, mountpoints and whether thy
should be mounted automatically or not. See "man fstab" for details.
Here's the first few lines of janus' fstab file:

    /dev/hdc8               /                       ext2    defaults        1 1
    /dev/hda2               /boot                   ext2    defaults        1 2
    /dev/hdc7               swap                    swap    defaults        0 0
    /dev/fd0                /mnt/floppy             ext2    noauto          0 0
    /dev/cdrom              /mnt/cdrom              iso9660 user,noauto,ro  0 0
    /dev/hdc1               /opt                    ext2    defaults        1 2
    /dev/hda1               /mnt/C                  vfat    ro,uid=500      1 2
    /dev/hdc5               /mnt/E                  vfat    uid=500         1 2

You can see:

	/ comes from our main drive, hdc (master on the second IDE bus; hdb
	    would be the slave on the first IDE bus), because our boot drive
	    (hda) is fairly small.
	/boot from hda
	a swap area on hdc
	descriptions for the floppy and cdrom so we can say
		mount /mnt/floppy
	      or
		mount /mnt/cdrom
	    because mount knows to read /etc/fstab to find out the details.
	/opt from hdc
	/mnt/C from hda (Windows C: drive)
	/mnt/E from hdc (Windows E: drive)
	    On these last two, that "uid=500" line is because Windows doesn't
	    understand users, so we're saying when we mount these, pretend
	    all the files are owned by uid 500 (which is Kath).

That should get you started.

Cheers,
-- 
Cameron Simpson, DoD#743        cs@zip.com.au    http://www.zip.com.au/~cs/

Why be politically correct when you can be right?
	- Geoff Miller


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