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find out filesystem being used how?



I have a triple boot system:  Fedora, Gentoo and Win2k.  

How do I find out the filesystem which the Gentoo installation employs? 
If Gentoo's using ext3, then I'd add the following line to the /etc/fstab
file?

/dev/hdb3  /mnt/gentoo     ext3  users,owner,rw,umask=000 0 0

?

Can I probe hdb3 to find out the filesystem?  I think it's ext3, but don't
recall.


[root arrakis ~]#
[root arrakis ~]# cat /etc/fstab -n
     1  /dev/VolGroup00/LogVol00 /                       reiserfs defaults        1 1
     2  LABEL=/boot             /boot                   ext3    defaults        1 2
     3  devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
     4  tmpfs                   /dev/shm                tmpfs   defaults        0 0
     5  proc                    /proc                   proc    defaults        0 0
     6  sysfs                   /sys                    sysfs   defaults        0 0
     7  /dev/hdb3               swap                    swap    defaults        0 0
     8  /dev/VolGroup00/LogVol01 swap                    swap    defaults        0 0
     9  /dev/hdb1               /mnt/windows            vfat    users,owner,rw,umask=000 0 0
[root arrakis ~]# fdisk -l

Disk /dev/hda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/hda1   *           1          13      104391   83  Linux
/dev/hda2              14        9729    78043770   8e  Linux LVM

Disk /dev/hdb: 30.7 GB, 30750031872 bytes
255 heads, 63 sectors/track, 3738 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/hdb1   *           1        1427    11462346    c  W95 FAT32 (LBA)
/dev/hdb2            1428        1440      104422+  83  Linux
/dev/hdb3            1441        1495      441787+  82  Linux swap / Solaris
/dev/hdb4            1496        3738    18016897+  83  Linux

Disk /dev/dm-0: 78.8 GB, 78852915200 bytes
255 heads, 63 sectors/track, 9586 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/dm-0 doesn't contain a valid partition table

Disk /dev/dm-1: 1006 MB, 1006632960 bytes
255 heads, 63 sectors/track, 122 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/dm-1 doesn't contain a valid partition table
[root arrakis ~]#
[root arrakis ~]# cat /boot/grub/grub.conf -n
     1  # grub.conf generated by anaconda
     2  #
     3  # Note that you do not have to rerun grub after making changes to this file
     4  # NOTICE:  You have a /boot partition.  This means that
     5  #          all kernel and initrd paths are relative to /boot/, eg.
     6  #          root (hd0,0)
     7  #          kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00
     8  #          initrd /initrd-version.img
     9  #boot=/dev/hda
    10  default=0
    11  timeout=5
    12  splashimage=(hd0,0)/grub/splash.xpm.gz
    13  #hiddenmenu
    14  title Fedora Core (2.6.17-1.2187_FC5)
    15          root (hd0,0)
    16          kernel /vmlinuz-2.6.17-1.2187_FC5 ro root=/dev/VolGroup00/LogVol00 rhgb quiet
    17          initrd /initrd-2.6.17-1.2187_FC5.img
    18  title Fedora Core (2.6.17-1.2174_FC5)
    19          root (hd0,0)
    20          kernel /vmlinuz-2.6.17-1.2174_FC5 ro root=/dev/VolGroup00/LogVol00 rhgb quiet
    21          initrd /initrd-2.6.17-1.2174_FC5.img
    22  title win2k
    23            map (hd0) (hd1)
    24            map (hd1) (hd0)
    25            rootnoverify (hd1,0)
    26            chainloader +1
    27  title Gentoo
    28            kernel (hd1,1)/kernel-genkernel-x86-2.6.15-gentoo-r5 root=/dev/ram0 init=/linuxrc ramdisk=8192 real_root=/dev/hdb4
    29            initrd (hd1,1)/initramfs-genkernel-x86-2.6.15-gentoo-r5
[root arrakis ~]#
[root arrakis ~]# date
Mon Oct 16 08:31:04 IST 2006
[root arrakis ~]#
[root arrakis ~]# exit
logout

[thufir arrakis ~]$
[thufir arrakis ~]$



thanks,

Thufir



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