On my RHEL system, I gave the following command:

# file -sL /dev/sd*

Here is the output that I received:

/dev/sda:  x86 boot sector; GRand Unified Bootloader, stage1 version 0x3, boot drive 0x80, 1st sector stage2 0x849fc, GRUB version 0.94; partition 1: ID=0x83, active, starthead 32, startsector 2048, 1024000 sectors; partition 2: ID=0x8e, starthead 221, startsector 1026048, 103831552 sectors, code offset 0x48
/dev/sda1: Linux rev 1.0 ext4 filesystem data (needs journal recovery) (extents) (huge files)
/dev/sda2: LVM2 (Linux Logical Volume Manager) , UUID: ZwRo1k6K3XhyqeAUkqQuvMPCoW7leEF
/dev/sdb:  data

Request your help in understanding what the above means.

  1. Pls validate if this means that I have 2 partitions on my HDD namely, sda and sdb
  2. sda is further divided into sda1 & sda2. sda1 is ext4 format type and sda2 is LVM2
  3. sdb is of file system type data.
  4. What is meant by 'data' type (in #3) above?

closed as off-topic by womble Oct 21 '15 at 19:41

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You have two disks: sda and sdb.

sda is partitioned: sda1 is ext4 formatted, and sda2 is part of an LVM array.

sdb is (probably) unformatted.

'data' is what file reports when it can't work out anything more specific to report.


Adding to waht Douglas has already said...

Also try lsblk and lsblk -f and parted /dev/sda print and parted /dev/sdb print. And for a gui, try gparted.

file is not specialized in file systems and partitions... it is more for files, and probably supports partitions for things like if you had a file that was an image of a disk, you'd see partitions instead of 'data' which is more specific.

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