i need a calm person to talk me down.

[ 2.481214] VFS: Cannot open root device "sda2" or unknown-block(0,0): error -6
[ 2.481362] Please append a correct "root=" boot option; here are the available partitions:
[ 2.481513] 0b00 1048575 sr0
[ 2.481601] driver: sr
[ 2.481702] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[ 2.481843] CPU: 3 PID: 1 Comm: swapper/0 Not tainted
[ 2.481957] Call Trace:
[ 2.482010] <TASK>
[ 2.482078] dump_stack_lvl+0x48/0x70
[ 2.482155] panic+0x118/0x300
[ 2.482231] mount_block_root+0x1d3/0x1e0
[ 2.482309] prepare_namespace+0x136/0x165
[ 2.482398] ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs ]---
thats my Pop!_OS laptop after a routine kernel update π it just freezes there with teh caps lock light blinking. i have a live USB from when i installed it. im comfortable with a terminal but Ive never had to repair a boot before. is this fixable without reinstalling? i can boot teh live USB and see teh drives partitions, and my files look like theyre still there π so the disk is alive. i just dont understand what teh system is missing at boot. im about to throw this thing out the window lol
