thank you so much!you resolved my issue about PXE of windows 10 because i can now boot in uefi mode and also boot on windows 10…!
I still have a problem with windows 7.
I can boot pxe with uefi mode but after deploying windows 7, when it boots on windows 7, i have a screen with “refind” (see attached file please)![erreur UEFI win 7.png]. Whe i swith to “bios mode”, windows 7 boots…(/assets/uploads/files/1589268143874-erreur-uefi-win-7.png)

Thank you for your help
here is my dhcp configuration:

class "pxeclient" { match if substring (option vendor-class-identifier, 0, 9) = "PXEClient"; if substring (option vendor-class-identifier, 15, 5) = "00000" { # BIOS client filename "undionly.kpxe"; } elsif substring (option vendor-class-identifier, 15, 5) = "00006" { # EFI client 32 bit filename "ipxe32.efi"; } else { # default to EFI 64 bit filename "ipxe.efi"; } }

really weird…i copied and pasted a few times…I tried again and you were right…i feel stupid…:(
thank you so much!!!you are so helpful…:)

@tigervince30 Good you found the second DHCP server. I had a feeling this would be caused by a stale DHCP server in your network.

i undestood why it did not work…in you tutorial, you say that we have to remove space inside the name of the folder for driver’s path.
for example, we have to create a folder called “optiplex390” and not “optiplex 390”. But in my case, i need to put “space” in my folder…and now, it works like a charm!