-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of m.roth@5-cent.us Sent: Thursday, January 05, 2012 15:33 To: CentOS mailing list Subject: Re: [CentOS] Corrupt mbr and disk directory map
Billy Davis wrote:
On 1/5/2012 11:20 AM, m.roth@5-cent.us wrote:
Billy Davis wrote:
We are running Centos 5.6. All was fine until yesterday. I
attempted
to tar a 14KB work file to a USB floppy (/dev/sdb) for transport
to
another server. Unfortunately, I keyed in 'tar cvf /dev/sda
filename'
instead of 'tar cvf /dev/sdb filename'. /dev/sda is our main
<tail o' woe elided>
<SNIP>
Next, I reinstalled grub. All seems normal now, at least until I shutdown and reboot. I'll wait until the weekend to do that, just
in
case I still have to do a disk restore for some reason.
Best of luck, and let us know how things turn out.
If things go south, there *are* tools that will let you scan a raw disk, and you could look for the superblock or the first dup, then calculate where the fs & partition should start, but that would be *real* work.
The OP might want to look at the archives of this list for the somewhat recent "data recovery" thread before rebooting. I thought Lamar Owen's 9/23/2011 15:35 post was particularly good, because it mentioned some of the tools and processes.
And as Mark said... I hope it works.