I installed Ubuntu alongside with the Win7, rebooted PC, removed flash with installation files as the guide said and recieved a GNU GRUB screen with several options: Try or Install Ubuntu, Ubuntu(safe graphics), OEM install(for manufacturers), Test memory.
Why there is no option to choose Win7 and non-safe graphics Ubuntu and how shoul I deal with those issues?
GRUB_DISABLE_OS_PROBER=false
as detailed in this answer? – mchid Aug 12 '22 at 02:11lsblk
orblkid
and it should show up as an NTFS partition. If *and only if* the NTFS partition does show up and fixing the os-prober problem does not solve the issue, then, *as a last resort, you can use ntfsfix to fix the hibernated windows partition as described in this particular answer. It should be noted that this is possibly unsafe and could corrupt some Windows data so this should be a last resort.* – mchid Aug 12 '22 at 02:26lsblk
orblkid
then please edit your question and post the output of those commands. – mchid Aug 12 '22 at 02:27