fdisk fsync io 错误

Question

我有一个 32 GB 索尼笔式驱动器。我在编写/格式化它时遇到错误：

Disk /dev/sdb: 28.93 GiB, 31037849600 bytes, 60620800 sectors
Disk model: Storage Media   
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: 0x6ae77cd9

Device     Boot Start      End  Sectors Size Id Type
/dev/sdb1        2048 41945087 41943040  20G 83 Linux

Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
/dev/sdb: fsync device failed: Input/output error

这里发生了什么？