Re: Mirrored disk booting problem

Hi Merv,

Good news! I removed all the partitions off the mirror with DISKPART (there
were actually 3 partitions on the disk - Eisa, mirrored data, and an
unlabled partition after that...). I successfully remirrored with the
failing disk (whew!), shut down, removed the failing disk, set the mirror to
ID0 and added the new mirror. It came up like a charm!

Thanks for the KB article - I was surprised about all the things that can go
wrong with software mirroring and unfortunately you may not find out until
it is too late. I dodged a bullet this time and learned a lesson. I think we
will spend the few extra bucks and go with hardware mirroring next time!

Thanks for all replies!
Bs.


"Merv Porter [SBS-MVP]" <mwport@xxxxxxxxxxxxxxxxxxx> wrote in message
news:%230CfH1QEJHA.3844@xxxxxxxxxxxxxxxxxxxxxxx
Reasons why Windows NT does not boot from a shadow mirror drive
http://support.microsoft.com/kb/167045

As you said, probably EISA partition.

Dskprobe.exe
Windows Server 2003 Service Pack 1 32-bit Support Tools
http://www.microsoft.com/downloads/details.aspx?familyid=6EC50B78-8BE1-4E81-B3BE-4E7AC4F0912D&displaylang=en

--
Merv Porter [SBS-MVP]
============================

"Bitsmasher" <abracad@xxxxxxxxxxxxx> wrote in message
news:48c3c4f4$0$26967$607ed4bc@xxxxxxxxx
Hi Super,

I also tried not breaking the mirror and selecting the different
partitions. no good there either.

I just found some KB articles about microsoft having some issues with
EISA partitions on disks made dynamic. I am thinking maybe more so with
Mirrored Dynamic also...

I will now try removing the EISA and data partitions with DISKPART in
console repair, remirroring and try again. I would think the mirrored
disk would have the same data in the boot sector - right?

Thanks,
Bs.

"SuperGumby [SBS MVP]" <not@xxxxxxxxxxx> wrote in message
news:OADLkhHEJHA.4824@xxxxxxxxxxxxxxxxxxxxxxx
When you broke the mirror the drive was marked as a different drive
letter.

When replacing a drive in such circumstances you _should not_ 'break'
the set. You simply disconnect the erroring drive and run the array
as-is 'missing a member' to ensure operation and remove the missing
drive from drive manager (a different process than 'breaking the
mirror'). Then shutdown and incorporate the new drive into the set.

With your different layout you may need to adjust boot.ini, make:
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Windows Small Business
Server"
multi(0)disk(0)rdisk(0)partition(2)\WINDOWS="Windows Small Business
Server"

"Bitsmasher" <abracad@xxxxxxxxxxxxx> wrote in message
news:48c2de54$0$29512$607ed4bc@xxxxxxxxx
Greetings to all,

I am having a problem booting from a mirrored disk. The system is a HP
Prolient ML310G2 with two 36GB SCSI drives mirrored with SBS2003 disk
manager. Disk 0 has been throwing errors at the rate of about 3 per day
for the past month. I have a new 36GB disk and want to replace the
failing drive with it. System uses a HP (LSI) single channel ultra 320
2000 series SCSI controller.

I want to boot off the mirror and mirror the new disk to it. I cannot
get the system to boot when I remove the failing SCSI drive. I have
broken the mirror and set the good disk to ID0 but just get a black
screen with a blinking cursor. I have had to put the system back as it
was and hope it doesn't fail. I have tried adding scenarios in the
boot.ini file to go for the firs or second disk and first or second
partition and tried them all but still no boot!

One thing I did notice was that ID0 has only one partition (C: drive).
and ID1 has an 8mb EISA partition in front of the system partition.
Should I try to remove the EISA, remirror and try to boot the mirror
like that? if so, how do I remove the EISA?

Thanks for any help on this!
Bs.









.

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