Bios boot sequence trouble...

Hey guys, I recently wanted to install Kali Linux dual bootable with windows. I went to the BIOS in order to change the boot sequence so I could install it from the USB drive and even if I try to use GRUB, the BIOS wont let me click the tab to change it so it will boot from it... The PC in question is a Dell OptiPlex 5055 and its the first time I have this issue... Any help will be appreciated!!! Thanks in advance

Dell

The one company I have seen goes through a motherboard with a " nope dont want that" attitude and will deliberately make part unusable or inactive so the person has to call their premium helpline to get the problem they created mended by someone with a list of macros.

Most Linux installer Ive come across in recent years dont need BIOS access to make and control the boot partition as they have their own install script. Im probably worng in this instance as its a while sinse I did a Linux piggyback.

I create a partition for the install on some internal or (on one occasion) an external drive. then I would follow what our AI (chokes) has told us

The Windows Boot Manager is a program that loads Windows by determining which operating system to use. It's the first program to run when a computer starts up.

How it works

1. The BIOS or UEFI launches the Windows Boot Manager.
2. The Boot Manager reads the Boot Configuration Data (BCD) to find the available operating systems.
   
   
3. The Boot Manager displays a menu that lets the user choose an operating system.
   
   
4. The Boot Manager hands control to the bootloader for the selected operating system.
   
   • The bootloader loads the operating system's kernel and starts the operating system.
     

Accessing the Boot Options Menu
To access the Boot Options Menu on Windows 10, 11, 8, or 7, you can:

1. 
   
2. 
   
3. • Click Start
   • Click the Power button
   • Hold Shift and click Restart
   • Click Troubleshoot
   • Click Advanced options
   And so on and so forth.
   Personally I used a boot manager that wrote a new partition using the old one as a template and adding the extra info. As I said I could be wrong it was a while and a lot of hair back, but I hope this helps you out