Robert Peters wrote:

> 512 bytes.
is OK for disk block device

This is spinning disk
fdisk -l /dev/sda
Disk /dev/sda: 465.8 GiB, 500107862016 bytes, 976773168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

This is SSD with the partitions

fdisk -l /dev/sdb
Disk /dev/sdb: 465.8 GiB, 500107862016 bytes, 976773168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xd834ff9f

Device     Boot  Start       End   Sectors   Size Id Type
/dev/sdb1  *      2048    526335    524288   256M 83 Linux
/dev/sdb2       526336 976773167 976246832 465.5G 83 Linux

Perhaps the problem is related to installing from USB to USB.

regards