Each time the PC starts, grub entrers rescue

Hello!

I am really new to Kali, used Mint and CentOS and Fedora and I need Kali since I am learning system and networking administration.

I've installed Kali, however, somewhere during the installation, I've messed it up and I don't really remember where exactly.

The problem is that each and every time I start the PC, I do not get the GRUB loader menu to choose OS, as I have Win 10 and Kali.

I've followed this:

https://www.***********************O...pvZO8Oc&t=263s

But I have to do it every time I start the PC.

I've tried reinstalling grub, but got:

Code:

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sudo grub-install /dev/sdb5

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Code:

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Installing for i386-pc platform.grub-install: warning: File system `ext2' doesn't support embedding.
grub-install: warning: Embedding is not possible.  GRUB can only be installed in this setup by using blocklists.  However, blocklists are UNRELIABLE and their use is discouraged..
grub-install: error: will not proceed with blocklists.

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Can you please help me fix the grub please?

Thank you!