Since I am encountering the same issue, i am went a bit mad on that one.
I had this installtion running for now a record of 6h and quit it.
Then I invested a long day to see what could be the problem. I tried a lot already:
I made a Bootstick with different programs like Rufus, Balena...
I tried older version of Proxmox...
I bought different drives, latest HDD, latest SSD, competable NVMes...
I tested the drive, if they may have any problems, read out SMART values...
Ask a bunch of my colleges, ran through the internet up and down, went on shady side and reinstalled my windows - just in case...
None of this worked...but at least windows reinstalltion worked out fine!
Then I thought: "Dude, maybe its the BIOS/UEFI which causes the problem here.."
So I jumped into it and checked the settings, the version, TPM - all this fancy stuff..
And browsing the web to see if Proxmox is needed some special BIOS/UEFI settings is a pain in the ***...
By looking for possible settings on the web I found this crazy mate:
https://www.technik22.de/d/504-proxmox-bleibt-bei-3-creating-lvs-stehen/12
Sure, its in German, but what this fellow did is some legid stuff. He/She/They tested a bunch of things to verify the same problem.
At the end this person just detached the BIOS chip, flashed it and put it back on the board again.
But for me the most interesting part was, that the system was on a ASRock Motherboard.
So for me the first question to those, who still have the same issue:
Do u have an ASRock motherboard? If yes, which version?
This person just installed Proxmox on the UEFI Version 1.6!
After this madness and raging moments I took a looong session of Mortal Kombat 1 to blow of some steam, took a nap and went back on the problem.
I cleared my TPM, since its an older hardware, where I tried to install Proxmox on, checked if every setting is according to the same outcome:
every TPM setting is pointing to eather 2.0 or 1.2 - for me I set it up to 2.0.
Then I tried the installation of RAID mode - not on AHCI mode...
Failed...
Went back into the UEFI, changed the mode to AHCI and tried again...
MAGIC HAPPEND!
After a stunning 9min27s the installer passed the "Create LVs" step and finished the installation!!
But what is the right path to fix this issue now?
Well I would consider to clear ur TPM, if u had it running before, check the storage setting, if its on AHCI or RAID, change it and try it again,
I guess u will run in some fancy error codes like I did, but I completly ignored them by giving it a good hard reset...
What u else can do: rest ur UEFI to the default settings, install Proxmox without any network connection, but give it an IP out of ur network, so u can get to the WebUI later on. Oh and yea, at the end I installed it on the drive which was on the hardware all along. I didnt run it on the new drives...But now I have 4TB of space to play on - YEAY-
Last but not least - get away from ASRock motherboards - in my opinion this seems to be the main issue here. I even installed Proxmox on my Raspberry PI 4 - worked out super fine and on a MSI Board with no problems what so ever...
Good Luck! May the bits be with u!