Install HDD on VU+ Solo

Hello everyone
I am using Solo with BH 2.0.9 installed
Until now I used to record on a 64 GB diskonkey which was formatted from the Solo as EXT2 using the "USB format wizard" (Took about 10 minutes)
A little bit confused about initializing and/or formating my 1 TB HDD
HDD is new from Box and was originally formatted as NTFS. I connected it and it was recognized by device manager
I initialized it from menu/setup/system/hard drive
Took about 1 or 2 minutes (suspiciously fast ?) I thougt I have to format it now using the USB format wizard but It was not recognized there.
Checked the HDD from my Laptop using "EXT volume manager" and found out it is formated now as EXT3
Created folder movie using telnet, set all the recording paths and now I can record , seems that everything is working fine now.
My question is if this was the right procedure ? Only initialize is enough ? "USB format wizard" is only for diskonkeys ?
And why it didnt format as EXT4 ? (I am using BH 2.09)
Many Thanks and have a great day (: