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Risu

Member

Registered: 2021-07-23

Posts: 12

[SOLVED] Extended partition does not start on physical sector boundary

Disk /dev/sda: 465.76 GiB, 500107862016 bytes, 976773168 sectors
Disk model: ST500LT012-9WS14
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0x9eca72f8

Device     Boot     Start       End   Sectors   Size Id Type
/dev/sda1  *         2048  50505727  50503680  24.1G 83 Linux
/dev/sda2        50505728  58505215   7999488   3.8G 82 Linux swap / Solaris
/dev/sda3        58507262 976767039 918259778 437.9G  5 Extended
/dev/sda5        58507264 163842047 105334784  50.2G 83 Linux
/dev/sda6       164378624 204800063  40421440  19.3G 83 Linux
/dev/sda7       204802112 976767039 771964928 368.1G  7 HPFS/NTFS/exFAT

Partition 3 does not start on physical sector boundary.

Should I fix it, if yes how?

Last edited by Risu (2021-07-30 06:18:33)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 77,374

Re: [SOLVED] Extended partition does not start on physical sector boundary

58507262 isn't a multiple of 512.
This *can* have negative performance impact, however it's only the extended partition (the inner partitions 5&6 are aligned) and sda7 (the ntfs partition that gave you so much joy…)

Given your recent experiences w/ the partition table and the fact that there're actually some re-allocated sectors on the disk and that this is a dual boot system: I'd not bother.

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Risu

Member

Registered: 2021-07-23

Posts: 12

Re: [SOLVED] Extended partition does not start on physical sector boundary

58507262 isn't a multiple of 512.

How about this?

Disk /dev/sda: 465.76 GiB, 500107862016 bytes, 976773168 sectors
Disk model: ST500LT012-9WS14
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0x9eca72f8

Device     Boot     Start       End   Sectors   Size Id Type
/dev/sda1  *         2048  50505727  50503680  24.1G 83 Linux
/dev/sda2        50505728  58505215   7999488   3.8G 82 Linux swap / Solaris
/dev/sda3        58505216 976768064 918262849 437.9G  5 Extended
/dev/sda5        58507264 163842047 105334784  50.2G 83 Linux
/dev/sda6       163844096 204800063  40955968  19.5G 83 Linux
/dev/sda7       204804096 976768064 771963969 368.1G  7 HPFS/NTFS/exFAT

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 77,374

Re: [SOLVED] Extended partition does not start on physical sector boundary

Shrinking swap isn't a problem.
But is /dev/sda7 still mountable after you moved its start position inwards? sda6 moves as well?
You cannot just re-write the partition table but you have to move the filesystems as well (and for leftwards moving, that implies to copy around all data)

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

Risu

Member

Registered: 2021-07-23

Posts: 12

Re: [SOLVED] Extended partition does not start on physical sector boundary

Shrinking swap isn't a problem.
But is /dev/sda7 still mountable after you moved its start position inwards? sda6 moves as well?
You cannot just re-write the partition table but you have to move the filesystems as well (and for leftwards moving, that implies to copy around all data)

I revert it back like before and just let em be, im thinking of formating the disk (for the first time in 12 years lol) reinstalling Arch Linux and make it the only operating system.