Backup then drive letter change!!

March 26, 2011 at 06:58:00
Specs: Windows 7
I have done a full backup of files and folders on a friends XP PC and for some reason their system drive letter had changed from C to H, I think when a zip drive or similar had been installed.

Of couse I then formatted, installed XP and completed setup. Then when I go to restore the backup copy it is looking for H and new OS installation is on C.

Really struggling, tried to change C to H in regedit but won't boot of course. Wonder if there is a way to specify drive letter before installing XP in setup? Thanks for any help!!


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#1
March 26, 2011 at 07:04:18
There was no reason to format. Drive letters are changed in disk management, not regedit.

Start, run, type diskmgmt.msc & press enter.

How do you know when a politician is lying? His mouth is moving.


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#2
March 26, 2011 at 07:37:02
You can change the drive letter assignment of any hard drive partition in Disk Management to any available drive letter C-Z, EXCEPT for the drive letter for the partition Windows is booted from.
Other than that, if a drive letter you want to use is being used, you can change the drive letter of the partition (or the CD drive or removable drive) that is using it to something else to free up the drive letter you want to use .
........

For XP (and 2000), Setup determines the drive letter Windows sees it's Windows installation as being installed on (the partition the full \Windows folder is installed on) according to whether or not Setup detects existing partitions that have already been assigned drive letters when Setup is being run.

If Setup detects NO existing partitions that have already been assigned drive letters when Setup is being run, it assigns C to the partition the Windows installation itself is being installed on.

If Setup DOES detect existing partitions that have already been assigned drive letters when Setup is being run, it assigns the first available drive letter alphabetically that is not already being used to the partition the Windows installation itself is being installed on, NOT C.

You can make Setup assign C to the partition the Windows installation itself is being installed on, if there ARE existing partitions that have already been assigned drive letters, by HIDING them from Setup while Setup is being run.
- if all the other existing partitions are on a different physical hard drive, you disconnect them, or disable them from being detected in the bios Setup, BEFORE you run Setup
- if any existing partitions are on the same physical hard drive, you can use a "partition manipulation" program to HIDE the other existing partitions BEFORE you run Setup.


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#3
March 30, 2011 at 09:31:52
Thanks very much for your replies, I did learn about the disk management drive letter change utility after I'd formatted ( it needed formatting due to being full of rubbish etc etc).

On beginning the new installation I did try and partition the drive to move the drive letters on so I could then install windows to H and therefore my backup file would sort itself out ok. PC is up and running with XP installed on C but of course I still cannot restore the backup file as it wants H to restore to. Is there anyway to edit the direction of that file? I used windows backup & restore utility - nothing in life is that simple !!??

Thanks again for advice - you are really helping!! Jason


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Related Solutions

#4
March 30, 2011 at 10:24:51
The only way I know of you could fix your problem is to install Windows from scratch again on a system that has hard drive partitions that Setup can detect while running Setup that are using C, D, E, F and G.

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#5
April 5, 2011 at 02:13:37
Thanks, that's what I'd thought might be the option, did try that initially using Windows setup to set the partitions but it would only do 3, so C,D,E - still didn't get me to H!!

Can you suggest a good partition utility please? Needs to be fairly straight forward as my PC skills are OK but not the best.

Thanks again for everyone's comments.


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#6
April 5, 2011 at 07:42:13
The freeware Easeus Partition Master Home Edition is pretty good

but it can't change drive letters already assigned by an operating system to a partition, at least not the one Windows was installed on.

You are allowed to make up to 4 Primary partitions on one physical hard drive, or up to three Primary partitions and one Extended partition that can have as many Logical partitions within it as you like, depending on how may driver letters are left that are available between and including C and Z.

E.g. Three Primary partitions could be assigned C, D, E by the operating system , the Extended partition could be assigned F, G, and H by the operating system for three Logical partitions made within it.

Or if you had three Primary partitions, and an Extended partition that has two Logical partitions and un-allocated space for a third one, if an operating system had already assigned C, D, E, F,and G, XP's Setup would use H for the drive letter of a new Logical partition made in the unallocated space.
.......

What did you do the Backup with ?

It MAY be possible to change the drive letter it expects to be installed on to a different one.



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