Hi,
This version 20 is pretty good and flexible.
I experienced several issues and/or improvements (just my 2 cents):
#1/ during the flash process, I tried to expand the partition, it failed. As a consequence, I had a filled partition where I could not add files and the VTOYEFI partition and a lot of empty space. Can VTOYEFI partition be at the beginning of the disk and the MEDICAT one filling the key?
EDIT : moving it to the end using MiniTool Partition Wizard should work
#2/ Download was a pain because of Google/Mega limitations, torrent is unusable in France because of HADOPI false positives (I strongly encourage French users seeing this post to STOP using torrent, even if this is a legal download), maybe there can be another mirror?
#3/ Downloading 20 GB is OK for such quality, but maybe there should be some king of an update of the actual key? Maybe a script/EXE which will update the MEDICAT files (from official mirrors), can reinstall the bootloader (in case of corruption), and retrieve ISO files from their official sites (which you can then easily md5sum and rename)?
EDIT : 20.08 comes with UPDATE. Just take care to remove old ISO files to avoid several versions of the same tool
#4/ I used the minitool parition wizard as suggested to move the VTOYEFI partition, leaving 1 MB before and after. It worked (tried several boot). I updated the portableapps, added a couple of ISO and now, the key boots on a black screen, nothing happens. It occurred twice. I removed the PortableApps folder (and another folder), they weight 200K files, the key booted correctly
EDIT : I need to check my keep but I might have accidentally deleted ".ventoyignore" and ".nomedia" files at the root of the big folders
#5/ When booting, I can see grub errors, but it is too fast, I cannot tell what it is, maybe some syntax error somewhere
EDIT : this seems to happen on some computers (old ?)
#6/ Ventoy got updated to 1.0.16, because of my black screen, I tried to update it, I had 3 problems: partition was not of the correct type (EF), partition was not at the correct position (I assume it had to be aligned when I moved the partition), partition size was incorrect (32 MB). After correcting those 3 errors, Ventoy detected the key and update successfully (tried under Windows 10 and Linux). This did not solved the black screen issue (caused by too many files). I lost the categories (all ISO are in the same list). Because of the partition type change, I cannot assign again the drive letter under Windows.
EDIT : with 20.08 UPDATE, the ventoy files can be simply copied over the actual key without issue
#7 I added CloneZilla, only AMD64 (stable and alternate) was able to boot, with memdisk enabled, but it took about 5 minutes to start booting
I hope this will help