Jump to content

unable to USB boot in UEFI, Lenovo Y400/Y500


clarenc3

Recommended Posts

Morning all,

I'm having some serious problems booting into my Win7 install UEFI USB stick. I've been on v1.04, v2.02 and now on svl7's v2.02 mod, all with similar results.

On boot, I set:

USB Boot: Enabled

Boot Mode: UEFI

OS Optim.: Win864bit (should load UEFI settings I think).

To create my UEFI bootable USB I have tried:

Win7 download tool and a UEFI copy of win7,

Rufus, selecting UEFI/GPT boot and a UEFI win7 copy,

manually creating the efi/boot folder from a BIOS win7 copy

I've also played around with changing to legacy then changing to UEFI to "force" a UEFI drive scan, playing with disabling most boot settings in locked mode (e.g. WLAN=off, USB always on=off), and running off minimal internal setup (removing RAM, removing drives, internal keyboard/touchpad, etc). I've also tried all USB jacks.

I've had a few successes on which I can boot to the drive and it remains detected over successive boots along with Win8 but when I reconnect the USB, it's no longer detected.

On the few successful boots, it hangs after loading the install files. By "hang" I mean CPU fan turns off, no HDD/SSD activity and no USB stick activity.

Have I completely lost my mind and missed vital info, or does this board simply not like USB UEFI? Can anyone else please confirm this behaviour?

Thanks

Link to comment
Share on other sites

  • 1 month later...
Just set

Boot mode : legacy support

Boot priority : legacy first

USB Boot : enabled

Hey,

I have the same problem. Is setting legacy support really the solution. I dont't want to Windows install the comaptible mode. Is Windows building uefi drive drive although legacy support is selected? Otherwise it would be useless.

Link to comment
Share on other sites

Hey,

I have the same problem. Is setting legacy support really the solution. I dont't want to Windows install the comaptible mode. Is Windows building uefi drive drive although legacy support is selected? Otherwise it would be useless.

Link to comment
Share on other sites

  • 3 weeks later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.