Re: I deleted a raid 1 array, now cannot access the data on either disk.
- From: "phorner via HWKB.com" <u16111@uwe>
- Date: Sun, 27 Nov 2005 04:27:51 GMT
Thank for your suggestions. I wasn't able to "find" those drives, but
eventually went onto MSI tech asst site and downloaded their live update
program. Then downloaded and installed all drivers, I downloaded, but
chickened out on installing an upgraded BIOs. I turned the machine off (not
restart) and checked Win Explorer and found intact, apparently identical
data on my two sata drives.
Thanks again for your help!
Priscilla
Paul wrote:
>> if you deleted the array...you lost everything that was on it..now you have
>> 2 blank drives. As for using them as storage I would try unplugging one of
>> them and see if Windows finds the other one.
>
>It was my understanding, that "delete array" only erases the
>reserved sector on each disk, that tells the BIOS you have
>arrayed data in place. I have read of people doing a "delete array"
>followed by a "make array without initialization" and all the data
>will still be there.
>
>However, with any data recovery problem, you have to be
>extra cautious and methodical. The first thing you want
>to do, is make a sector by sector copy of at least one of
>the "missing" disks. If you want to do an experiment, do the
>experiment on a copy of the drive. If you want to experiment
>with making the array again, hell, copy both drives. At least
>think ahead far enough for that.
>
>By buying a couple of spare drives, you might even end up
>having a backup strategy :-)
>
>When using _any_ recovery method, if the data is valuable
>to you, do a sector-by-sector copy first if you can.
>
>This is how I would proceed.
>
>1) Buy two disks identical to the old two disks.
>2) Using the software that comes with the new disks,
> copy sector-by-sector "old 0" to "new 0"
>3) Unplug those two, then copy "old 1" to "new 1"
>4) Now plug "new 0" and "new 1"
> Enter the RAID BIOS:
>
> "Create Array"
> then something like "RAID 1"
> and "Create Only"
>
>Your user manual has a statement in it:
>
> "Deleting a disk array will destroy all the data on the
> disk array except RAID 1 arrays."
>
>which means all the data is there, you just need to recreate
>the reserved sector that tells the BIOS you have a RAID 1
>array. The key is "Create Only", which at least at the BIOS
>level, prevents rebuilding the array (which wouldn't
>hurt anything anyway, as the two disks are supposed to be
>identical.
>
>After the "Create Only" operation, you could also consider
>disconnecting one of the disks. When the system next POSTs,
>it will declare the array "critical", but one of the options
>should be to boot anyway. Then, if you wanted, you could
>copy the data from that single disk, to some other disk.
>Since you said, you think the two disks are not exactly
>identical, if a file-by-file copy from one disk is not
>looking good, unplug the single member of the array and
>plug in the other single member, and try the file-by-file
>copy from it.
>
>With your two brand new drives, you can also practice the
>"Create Only" sequence before doing the above procedure,
>to see whether the BIOS or the operating system attempt
>to build the array after it is done. With the two new disks,
>you could even try "Create", format in the OS, put a couple
>files on there, "Delete Array", then the "Create Only"
>sequence you plan to use on the real two disks, and see if
>the "Create Only" operation leaves the data intact. When
>your test sequence is complete, you can always "Delete Array"
>on the new disks, and then do the sector by sector copy
>from the old disks.
>
>A pair of new disks, matched in size to the old disks,
>will give you a world of possibilities.
>
>(User manual, starting at Page 50)
>http://66.96.84.4/support/mnu_exe/mbd_mnu/E7021v1.1.zip
>
>Good luck,
> Paul
--
Priscilla
Message posted via http://www.hwkb.com
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