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Thanks, I'll try it with a linux usb and gparted first
– cipricus
Commented Mar 28 at 13:07
@cipricus The same should be able to be done from WinRE, simply dismount the OS partition via diskpart
– JW0914
Commented Mar 28 at 13:16
Trying with Linux live session I cannot resize either because it's locked (I guess): it appears as "bitlocker" type partition. The laptop was bough t as such - second hand - I haven't locked the drive myself and I don't have a recovery key. Or is it stored somewhere on the recovery partition maybe?
– cipricus
Commented Mar 28 at 13:42
1

Reboot into your normal system, run manage-bde -protectors C: -get, then write it down. (There's also an option to save/print it from BitLocker GUI.)
– grawity_u1686
Commented Mar 28 at 13:43
1

@cipricus: Then it's probably in "pending activation" mode, i.e. encrypted but with the key unprotected on the same disk so that it appears as if BitLocker is still off (Windows sometimes does this because it makes future activation instant). Should be possible to unlock it via manage-bde from the recovery environment without any key, too.
– grawity_u1686
Commented Apr 1 at 10:27

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