In the installation of the linux system, I encountered such an error when I entered the U disk to start normally and then entered the installation linux interface.
Inaccessible
This is the problem that the server did not recognize your U disk
to this interface
cd/dev and then ls you can see your u disk name
Among them, sdb4 refers to the U disk on my computer device, sda refers to the first mount disk, sdb refers to the second mount disk, sdc refers to the third mount disk, and so on. The name of the USB mount on each computer is different, and the mount disk should be selected according to the situation. Normally, we don’t know the name of the U disk mount, but here you can see that if you pull out the sdb on your upan, there will be one less, which is your U disk
reboot again into
press e
Will
vmlinuz initrd=initrd.img inst.stage2=hd:LABEL=CentOS\x207\x20x86_64 rd.live.check quiet
change into
vmlinuz initrd=initrd.img inst.stage2=hd:/dev/mount disk name quiet
can
ctrl+x to save and then install normally