Is it okay if my sector size is "512 bytes / 4096 bytes"

Altiris · 07-30-2015, 08:15 PM

Getting ready to install Slackware 14.1 on my server and I ran into some partition misalignment errors, I've fixed them up and now fdisk no longer shows any errors relating to that however the error of "The device presents a logical sector size that is smaller than the physical sector size..." is still present and it shows that my sector size is 512 out of 4096bytes. Is this okay? Should it be 4096 / 4096 bytes instead? If so, how do I do such a thing?

Maybe this is useful, but my first partition has the start sector at 2048 and all of my two other partitions have start sectors divisible by 8.

Emerson · 07-30-2015, 08:30 PM

Many drives report fake sector size 512 while the real size is 4096. Recent versions of fdisk and all versions of gdisk will align your partitions automatically.

syg00 · 07-30-2015, 08:38 PM

So yes, everything is fine - this is just a backwards compatibility thing. Be happy you have a disk that uses 4k sectors.

Altiris · 07-30-2015, 09:02 PM

Ahh okay thanks guys, and I will be glad I have a disk that uses 4k sectors! Thanks again!

kikinovak · 07-31-2015, 03:09 AM

Quote:

Originally Posted by Altiris

Getting ready to install Slackware 14.1 on my server and I ran into some partition misalignment errors, I've fixed them up and now fdisk no longer shows any errors relating to that however the error of "The device presents a logical sector size that is smaller than the physical sector size..." is still present and it shows that my sector size is 512 out of 4096bytes. Is this okay? Should it be 4096 / 4096 bytes instead? If so, how do I do such a thing?

Maybe this is useful, but my first partition has the start sector at 2048 and all of my two other partitions have start sectors divisible by 8.

http://www.microlinux.fr/microlinux/...tion-HOWTO.txt

syg00 · 07-31-2015, 03:19 AM