Not using the recovery disk. But you can convert the disk to NTFS.
Make sure you know the implications before doing so - bye-bye data
recovery, ability to work from a DOS mode diskette, formallt scan for
and disable malware, etc.
Make sure you back up essential data, just in case, and read advice at
www.aumha.org/win5/a/ntfscvt.htm to avoid getting landed with 512 byte
clusters.
Mind boggles at a disk of that size being sent out as a single Fat 32
partition. Even in NTFS I would want to split it to some extent. That
needs third party software, like the BootIT NG referred to in that page;
or Partition Magic 8 - which will also do the alignment matter
Yes, I'd be more inclined to use BING to srink C: and create
additional volumes to unload the "engine room". The quality of your
mileage then depends on how big and how often partitions are used and
what you put where; try to reduce head travel
Whether you convert to NTFS or resize, be advised that these are
critical procedures that must NOT be interrupted. I refrain from
plugging in any electrical appliance while these are in progress.
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Running Windows-based av to kill active malware is like striking
a match to see if what you are standing in is water or petrol.