so i installed lubuntu with manual partitioning on an ext4 part. on my disk, but now my pc directly boots into lubuntu every time i open it up with no option to boot windows 7
You’ve not provided release details, as these will determine the version of grub being used; with differing defaults existing between releases, and some other options also being triggers by how the machine was installed (eg. if you have two disks on a system, but one was disabled at install time thus not seen, OS_PROBER won’t be expected to scan for other disks on subsequent boots as no need for it was detected at install time, as example).
You likely need to change your OS_PROBER option so it is forced to scan for other OSes, then just tell the system to update grub & all should be good.
For clues, you can just sudo update-grub and you’ll see what your current setting is, eg. on this box I see
Warning: os-prober will be executed to detect other bootable partitions.
ie. OS_PROBER is executed here, so I’ll see options to boot my other installed OSes. You maybe are seeing a different message telling you OS_PROBER won’t be run on your unstated release.
Maybe useful - boot - Check GRUB_DISABLE_OS_PROBER - Ask Ubuntu
Fixed, held shift on boot and it showed the grub menu then i used easybcd so that it shows the windows boot manager
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