Arch Linux

TheChosenOne

Member

Registered: 2012-09-27

Posts: 130

Change the logical block size

My hard drive has a physical block size of 4096 and a logical block size of 512.
Is it possible to change the logical block size to 4096?

I've tried

mkfs.ext4 -F -b 4096 /dev/sdb1

It made a partition, but it didn't change the logical block size.

Is this even possible?

frostschutz

Member

Registered: 2013-11-15

Posts: 1,654

Re: Change the logical block size

Unless you hack the firmware of the drive itself [or use an USB enclosure that uses the wrong blocksize for its emulation], I'd guess the answer would be no.

It also shouldn't matter. Just align your partitions to MiB boundaries, and most filesystems already use 4K blocks as minimum unit regardless.

TheChosenOne

Member

Registered: 2012-09-27

Posts: 130

Re: Change the logical block size

Thanks. I'll try that.