merging two physical HDDs as one HDD

Lenovo Multimedia remote with keyboard
June 27, 2010 at 03:58:42
Specs: Windows XP
i want to ask that

please tell me how can i merge two hard disks

one with new pc of 80 gb and other also 80 gb of my old pc

which software i need and what i have to do for merging these hard disks so that they can works as one hard disks in my new pc

i have window xp sp2 installed in new and window xp professional in the old one
please tell me how to do it

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June 27, 2010 at 04:40:22
You can't. It would be like trying to make 2 cars into one. They are separate physical entities.

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June 27, 2010 at 04:48:08
Perhaps you are talking about setting up a RAID.

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June 27, 2010 at 04:58:30
You can use them both in your new machine, but you can't merge them into one. You can access them both from the new machine though. Just physically install the old hard drive into the new machine. After the installation, you can see what was on the old hard drive. The xp professional will no longer work, so if you want to use the old hard drive for storage, you have to format it to wipe it clean. Go to Disk management , identify the old hdd and format it.

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June 27, 2010 at 06:04:34
If you mean merging the two hard disks so they appear as a single 160 Mgb hard disk it can be done using RAID O. RAID O splits the data between the two disk making it faster to read and write. That's in theory. In practice there is very little difference. The problem with this set-up is if there is a fault on one hard disk you lose all your data as there is little chance of recovering from a RAID 0 fault. Not recommended at all. Regular backups are essential.

There is also RAID 1 which writes the same data to both disks so if one fails the data is intact on the other disk, consequently you will only have 80 Gbs of storage space. Not really necessary in a home environment. More useful in a commercial environment where constant access to data is critical.

You would be far better and safer and more reliable in just using the two hard disk separately to store programmes and data. That way, if there is a fault you will have some chance of recovery.


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June 27, 2010 at 12:40:17
You can span physical disks and make a single logical volume. It's called striping, or so-called 'RAID 0'.

RAID 0 is a misnomer because there is no redundancy at all for fault tolerance.

In fact, you're increasing your chance of catastrophic failure by adding the 2nd physical drive into the mix like that.

Just pony up the $99 bucks and get a 500GB drive, then copy all your stuff from both your old drives onto it. :)

640K is plenty.

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June 28, 2010 at 05:32:49
"Just pony up the $99 bucks and get a 500GB drive"

$99? Remind me not to shop where you do.

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June 28, 2010 at 11:06:48
It appears there is some confusion between concatenated volumes, which is what the poster is kinda of asking about, and that of raid 0 volume.

A concatenated volume is one that links different drives together as one volume. This is referred to as a spanned disk. Some newer definations also list this as jbod [just a bunch of drives]

You can think of a concatenated volume as a bunch of barrels all connected at the top with a pipe. The first drive filles up and then data spills over to the second drive and so forth for each additional drive.

This is not the same as a raid0 stripe which has data split into blocks on each drive.

A spanned volume has the same risk at a raid0 volume.

I believe Partition Magic has the ability to do spanned volumes but since I have only used them in training/practice I can not say for sure that PM can do it.

Do note that you have to remove all data from both disks to then create the spanned volume, then restore. It's just like initializing a raid array wipes all data off the array.

I suspect this was not the answer you were looking for concerning your question. There is no easy way to make two data volumes appear as one on a local machine.

You may want to investigate ntfs junction points.

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June 28, 2010 at 11:25:20
how can i use raid o and raid 1 for merging two hard disks

so that they can become 160 gb hard disks

can u please tell me the steps

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June 28, 2010 at 11:40:33
You can't use raid1 or you just end up with a fault tolerate 80 gig drive.

you can do raid0 by following this but do understand what you want has risks like losing everything.

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June 28, 2010 at 11:54:39
"...but do understand what you want has risks..."

Yeah, and it's just a bad idea.

How to get 'er done...

Audares Juvo

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June 29, 2010 at 06:10:43
my question is if i want to add another 80 gb hard disks with my mew pc how can i do it and which software and all other stuff i need to do it

i want to know it step by step

because it is for one of my project

so please help me

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June 29, 2010 at 06:44:05
narenderkicks did you not understand the article I pointed you to in post 9?

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