Kako zadržati drive letters ako se Vista inst. s boota
 

znači kad se instalacija viste pokreće sa xp-a sve u redu slova particija ostaju ista. Međutim, pokrenuti setup x64 Viste na 32bitnim XP ne ide naravno pa ako idem iz boota onda će u visti stavit da mu je kao particija C, znam da se ostale particije tj. njihova slova mjenjaju bez problema ali ovako na sistemskim neće, znam da se može s Acronis Disk Directorom i to sam jednom napravio ali na XP-u i onda mi je sjebo boot, kako ovo rješiti?

Slova su tu apsolutno nebitna, svaki OS će ih drugačije staviti. Windowsi uvijek sistemsku particiju stave kao C, a ovo ostalo ide redom onako kako fizički stoji na disku. Prema tome, kad si u XP-u, on će ti biti na C, a Vista recimo na D. S druge strane, kad uđeš u Vistu, ona će ti biti na C, a XP na D. To vrijedi pod uvjetom da su particije fizički jedna do druge.

da da ma znam ali ono, mislio sam tako da mi ipak ostane sve isto, ma dobro nema veze...

Ovo je ludo! :D

Actually, there is a way to dual boot Vista x64 and XP x32 and retain
same drive letters both under XP and Vista.

Here is how:
Under XP change the drive letter of your DVD-ROM to something other
than the drive letter you want to have your Vista installed.

Boot from Vista DVD, click "Install Now" and hit Shift+F10, start
diskpart and make any partition changes you need (I personally shrunk XP
partition by 32Gb and then created another partition for Vista and
assigned it drive letter D: )
Go through Vista install as you normally would (make sure that
don't have to activate Vista twice -- you'll see the reason for that
later). Also don't install any updates or non-disk-essential drivers
just yet.
Once you log in to Vista for the first time -- open to registry editor
and go to HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices. Then rename
\DosDevices\D: to something else for now (presumable this is your XP
partition), rename \DosDevices\C: to
\DosDevices\[DESIRED_VISTA_DRIVE_LETTER]: (where
[DESIRED_VISTA_DRIVE_LETTER] should be replaced with the desired drive
letter for Vista partition -- D in my case). Now rename previously
renamed \DosDevices\D: to \DosDevices\C:
(see 'How to restore the system/boot drive letter in Windows'
(http://support.microsoft.com/?kbid=223188))

Close regedit and reboot. Now if you boot into Vista you will not be
able to run anything and your profile will not be loaded -- so instead
of booting normally choose Safe Mode with Command Prompt (by pressing F8
on boot menu screen while Vista option is highlighted). Once you boot
into Vista Safe Mode with Command Prompt change drive to your DVD drive
and start Vista setup AGAIN by typing setup in command prompt.

Go through Vista installation again and enjoy same drive letter
assignments under XP and Vista

Da, tako sam ja u Visti mijenjao slovo XP-ove particije iz D u E jer mi normalnim putem nije dao zbog toga što na njoj stoji boot manager...