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#1 XP_2600

XP_2600

    Neowinian

  • Joined: 01-October 05
  • Location: Egypt

Posted 27 June 2010 - 06:47

Hi all, i have a weird problem, earlier i was converting disks in Windows XP to dynamic and boot the machine normally, now i received more than a ticket from users who converted their disks to dynamic in Windows 7 then they can't boot the machine anymore the machine freeze at a black screen, any ideas about the reason and solution ? thanks.


#2 vetColin-uk

Colin-uk

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Posted 27 June 2010 - 07:02

whats the drive layout look like?

iirc you cant boot from a dynamic disk, but i could be wrong.

#3 OP XP_2600

XP_2600

    Neowinian

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Posted 27 June 2010 - 07:05

No you can, and i did it many times with Windows XP!

#4 +LogicalApex

LogicalApex

    Software Engineer

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Posted 27 June 2010 - 07:13

I would recommend you read up on Dynamic Disks via the following two MSDN articles located here and here.

As Colin-UK stated you can't boot from a dynamic volume. It makes sense. A dynamic disk is the MS implementation of software RAID. It can't access the boot information from the software RAID implementation before Windows is able to load the driver and mount the RAID volume.

Why are you using Dynamic Disks at all? With on-board RAID almost standard now you can get the crappiness of software RAID with the simplicity of hardware RAID via onboard RAID controllers.

#5 OP XP_2600

XP_2600

    Neowinian

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Posted 27 June 2010 - 07:20

Boot and system partitions. You can convert a basic disk containing the system or boot partitions to a dynamic disk. After the disk is converted, these partitions become simple system or boot volumes (after restarting the computer). You cannot mark an existing dynamic volume as active. You can convert a basic disk containing the boot partition (which contains the operating system) to a dynamic disk. After the disk is converted, the boot partition becomes a simple boot volume (after restarting the computer).


From the link which you sent, you can see its a supported scenario, also as i told you i did it many times in Windows XP.

#6 vetColin-uk

Colin-uk

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Posted 27 June 2010 - 07:36

i knew it :p

you need the partition to be active to boot from it.

you cant mark an existing dynamic volume as active.

#7 OP XP_2600

XP_2600

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Posted 27 June 2010 - 07:39

So the conversion in Windows 7 don't keep the boot partition boot after converting ?! its weird!!

#8 vetColin-uk

Colin-uk

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Posted 27 June 2010 - 07:41

I think it would keep the boot partition, but it wouldnt keep the active flag iirc.

#9 OP XP_2600

XP_2600

    Neowinian

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Posted 27 June 2010 - 07:46

And you don't think its weird? as Windows XP was doing it automatically ?

#10 vetColin-uk

Colin-uk

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Posted 27 June 2010 - 07:50

it does sound weird, im pretty sure i had problems when i tried changing my boot disk to dynamic in xp, once, and thus learned to stay away from them lol.

I guess it could be down to differences between NTLDR and BOOTMGR, but i could be wrong there :p

#11 OP XP_2600

XP_2600

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Posted 27 June 2010 - 07:51

ah i was going to reply, but then i noticed your avatar , do you love IE6 ? :s

#12 vetColin-uk

Colin-uk

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Posted 27 June 2010 - 07:53

ah i was going to reply, but then i noticed your avatar , do you love IE6 ? :s


lol, IE6 is ftw :shifty:

#13 OP XP_2600

XP_2600

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Posted 27 June 2010 - 07:57

LOl, ok now i did a live test i just converted the disk to dynamic and rebooted now Win7 does not want to boot, and i don't have an access to Win7 bootable DVD :D. any ideas?

#14 vetColin-uk

Colin-uk

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  • Joined: 25-February 04
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Posted 27 June 2010 - 08:06

LOL, well that wasnt clever :p

you'll have to boot with a rescue cd that has a hex editor and follow the instructions here

http://strangelyperf...k-in-windows-7/

or you could just wipe the disk and reinstall, but since you have no installation media, i guess thats not an option :p

#15 John.D

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Posted 27 June 2010 - 08:08

Yup, you already said it did the same thing with others. Why do it? Guess some have to learn the hard way