I want to extend a preset partition called system to make a multiboot.

To Add Windows Vista Boot Option to Windows 7 Boot Menu
Open Command Prompt as an administrator or an elevated prompt and type
C:>bcdedit
This will list the current boot manager configuration. Note down the identifier key which is in the format
{e96c8447-8171-11de-9007-b10454ebd432} or something like it.
C:>bcdedit /copy {current} /d “Windows Vista”
This will copy the current bootloader into a new entry for Windows Vista. However selecting it will still boot into Windows 7.
C:>bcdedit /set {e96c8447-8171-11de-9007-b10454ebd432} device partition=D:
C:>bcdedit /set {e96c8447-8171-11de-9007-b10454ebd432} osdevice partition=D:
bcdedit /displayorder {e96c8447-8171-11de-9007-b10454ebd432} /addlast
These two commands will set the new boot entry to point to your Vista partition and load from it.
You can reboot and see the changes.

No, i do not currently have vista installed. When i did have it installed however, i did receive a bootmenu. Depending on the active partition, decided which OS i could boot. I has two listings in the bootmenu, but only one was an OS. The other item on the list was something i havent seen before, and when i tried to boot the item, i got a page that told me i needed to repair the OS. I tried to preform a repair of both windows 7 and vista, swapping the active partitions to boot the other OS, but both repairs failed.

If i were to make the active partition the partition i want to install the OS to, would that fix the problem perhaps?

Z012495 said:

If i were to make the active partition the partition i want to install the OS to, would that fix the problem perhaps?

Yes that fixes the diskspace problem!

When vista is installes try to boot in vista. works?
Set the other partition active so you can boot in windows7. Now add vista to the bootmenu using BCDEDIT as mentioned earlier

Here is the answer to your question Error message when you try to upgrade a computer to Windows Vista: "This computer does not have enough space for temporary files. Error code 0x80070103"

Partitions and available space isnt a problem. Im trying to install to D: . And i changed the drive letter of system so that it would become visible, but vista still says there isnt enough space, since theres only 199 MB and it wants 481 MB. Im trying to do this: To Add Windows Vista Boot Option to Windows 7 Boot Menu Open Command Prompt as an administrator or an elevated prompt and type C:>bcdedit This will list the current boot manager configuration. Note down the identifier key which is in the format {e96c8447-8171-11de-9007-b10454ebd432} or something like it. C:>bcdedit /copy {current} /d “Windows Vista” This will copy the current bootloader into a new entry for Windows Vista. However selecting it will still boot into Windows 7. C:>bcdedit /set {e96c8447-8171-11de-9007-b10454ebd432} device partition=D: C:>bcdedit /set {e96c8447-8171-11de-9007-b10454ebd432} osdevice partition=D: bcdedit /displayorder {e96c8447-8171-11de-9007-b10454ebd432} /addlast These two commands will set the new boot entry to point to your Vista partition and load from it. You can reboot and see the changes. But its not working. No changes in my ability to boot. It still depends on the active system partition.

Very strange!! But do you realy need the small 199MB partition? Do you ever want to use bitlocker? If not:

1-save you bcd store. BCDEDIT /save c:\bcdsave. Post c:\bcdsave to this thread as attachment. Or post output of bcdedit /enum all
2-Set your C-drive as active instead of small partition. Can you reboot and see windows7? If not do startup repair (maybe 3 times)
3-check if your system is starting fine. Does "recovery environment" from disk work as well? press F8 when starting windows. All fine, then delete the "system reserved" partition
System Reserved Partition - Delete (but you can do it in windows now as well)

later more

theog said:

Z012495 said:

Vista wont let me get as far as to select a partition to install on, as soon as i start the set up i get the error about not having enough space.
Attachment 182517
I get this as soon as i click install.

Are you using a Retail Vista DVD?
or
a OEM manufacturer Restore Disk? (HP/Compaq, Acer, Toshiba)

What type of disk are you using?