🚀 go-pugleaf

frobozz@ozemail.com.au (Adam Eberbach) writes:

> I have accidentally repartitioned a hard disk using fdisk and if it's
> possible I have to reverse the actions. 
> 
> The disk was partitioned as a primary partition with a logical DOS
> partition on the extended partition. I was trying to repartition a
> separate drive, connected as master of the primary IDE interface, CDROM on
> secondary. The disk which was wrongly partitioned was connected as master
> of the secondary interface. I don't think I was wrong in thinking that I
> wanted to partition /dev/hdc.
> 
> Sequence of events:
> Boot RedHat 4 boot & supp disks. Get to disk partitioning stage, enter
> fdisk, target /dev/hdc. Delete partitions 1,2 and 5 from disk. Think at
> the time "strange...thought there was only one?" Create one large
> partition over the whole disk, set file type to 6 (MSDOS > 32M). Reboot to
> DOS, notice a drive missing, panic!
<snip>

Partitioning can be reversed.  I have done it myself a few years ago
using the disk editor from the Norton Utilities.

You need to understand at least the basics of how a HD is layed out,
e.g. MBR, primary and secondary partition tables, partition headers.
Or get help from somone who understands this.  Expect to spend at
least half a day on this, more likely 1 to 2 days - if you cannot
afford to make even a single mistake.

Don't blindly trust automatic disk repair programs - they sometimes
can leave your disk so messed up that recovery becomes impossible.

-- 
Manfred Bartz <mbartz@werple.net.au>
  --- LINUX, live free or die ---