1.
It stranges me that you're still experiencing 'end_request: I/O error, dev fd0, sector xxxxx' even after disabling floppy.

2.
When I boot a completely fresh install of BT5r1, I already get...

Dear fjecp,

b.
I also had 'end_request: I/O error, dev fd0, sector xxxxx' while booting.
I solved that one by disabling 1.44 floppy in bios.

a.
I also have the 'Warning: Unable to find the...

Yeah,

I'm also experiencing I/O errors on EVERY shutdown.

Every time I boot my BT5R1 persistent USB (8GB), I pray the last shutdown hasn't completely destroyed it.

Made it with universal usb...

To easily make a persistent BT5 usb stick apparently gives a lot of aids.

Whether one uses 'universal usb installer 1.8.9.9.' or makes does everything manually, including making own EXT3 or EXT4...

I used to just hold the powerbutton to shut down backtrack.

At the next boot I'd get lots of these:

EXT2-fs (loop1) error: ext2_lookup:

Since I very neatly log of first and then enter...