"no such device: ostree"

[Evelyn_Freeman]

Hello again. I’ve come with a very sadly problem (maybe I corrupted the hdd), I tried to create a partition for win10 and then to install the os, but then I rebooted my pc and then grub rescue appears. Rebooting again into bios, and I see that endless os boot disappeared
Help me as fast as you can, please

[egrath]

Do you want a multiboot setup with Windows 10 and EOS? If so, this setup is currently not supported, so you have to stick with either one of them.

If you just want to install EOS, use the Live Media to completly wipe your hdd before installing:

sudo bash dmesg | grep sd[a-z].*logical

this will yield some information about your installed disks, something like:

[ 1.485374] sd 0:0:0:0: [sda] 2000409264 512-byte logical blocks: (1.02 TB/954 GiB)
[ 1.485745] sd 1:0:0:0: [sdb] 500118192 512-byte logical blocks: (256 GB/238 GiB)
[14153.000100] sd 6:0:0:4: [sdg] 62333952 512-byte logical blocks: (31.9 GB/29.7 GiB)

Enumerate your primary disk (in most cases sda if only one physical disk/ssd is installed) and enter:

WARNING THIS CODE WILL WIPE ALL OF THE DATA ON THE GIVEN DRIVE, SO THINK TWICE BEFORE YOU TYPE

sgdisk --zap-all /dev/XXX

where XXX is the diskname from above. Reboot your PC with the Installer USB and install it.