Hi,

is there a problem if an Extended Partition does not start on physical sector boundary?

> Partition 4 does not start on physical sector boundary.

 ...
 /dev/sda4 639635454 1953521663 1313886210 626.5G f W95 Ext'd (LBA)
 /dev/sda5 639635456 954208255 314572800 150G 7 HPFS/NTFS/exFAT
 ...

 Partition 4 does not start on physical sector boundary.

See also https://wiki.hetzner.de/index.php/Partition_Alignment:

On an Extended Partition no data will written, so is there any problem that it does not match the physical sector boundary?

Thanks in Advance

User8461

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Hint:

The Question 
https://unix.stackexchange.com/questions/384310/fdisk-warning-message-extended-partition-does-not-start-on-physical-sector-bo
does not ask for the title info and answers only to
> Partition table entries are not in disk order