Installation from scratch

Re: Installation from scratch

Postby fvdw » Tue Mar 13, 2012 7:12 pm

Dear paros

More then 500 users managed to use this guide, so the problem is clearly on your side. I would like that you "lower your voice" a little. I don't want to see words like crap and so on in posts on this board ! Consider this as an official warning. We spend lots of our free time to make this firmware available to others, and try to help you out as good as we can. That you have little Linux knowledge is making it not easier but that is not our fault, you should be more patient and gradually you will learn enough to get it working. ;)

Now the most important information we need is as Jocko requested, to see what is the setup of your disk.
You can either use the fdisk -l command or the p command when you have accessed the disk with fdisk
It should look like this for a 2 TB disk
Code: Select all
Command (m for help): p

Disk /dev/sda: 2000.3 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks  Id System
/dev/sda1               1          64      514048+ 83 Linux
/dev/sda2              65         128      514080  83 Linux
/dev/sda3             129         192      514080  82 Linux swap
/dev/sda4             193      243201  1951969792+  5 Extended
/dev/sda5             193         292      803218+ 83 Linux
/dev/sda6             293         293        8001  83 Linux
/dev/sda7             294         357      514048+ 83 Linux
/dev/sda8             358      243201  1950644398+ 83 Linux

Important is the information on number of heads, sectors per track number of cylinders, cylinder size and units value
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Re: Installation from scratch

Postby Jocko » Tue Mar 13, 2012 7:14 pm

Please, what is the vendor of your disk
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Re: Installation from scratch

Postby fvdw » Tue Mar 13, 2012 7:24 pm

From the screen shot paros posted I conclude he has an advanced formatted disk using physical sectors of 4096 bytes instead of the normal value of 512

Quote form internet:
Starting in December 2009, hard disk manufacturers began introducing disks that use 4096-byte sectors rather than the more common 512-byte sectors. Although this change is masked by firmware that breaks the 4096-byte physical sectors into 512-byte logical sectors for the benefit of the operating system, the use of larger physical sectors has implications for disk layout and system performance.
--end quote

The warnings are correct as physcial sector size is bigger then logical sector size. But I think you can ignore it. If performance is affected I don't know.
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Re: Installation from scratch

Postby Jocko » Tue Mar 13, 2012 7:26 pm

Yes, I think he has a Western Digital with Advanced Format.
(@fvdw I send you a post)
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Re: Installation from scratch

Postby paros » Tue Mar 13, 2012 7:29 pm

fvdw wrote:Dear paros

More then 500 users managed to use this guide, so the problem is clearly on your side. I would like that you "lower your voice" a little. I don't want to see words like crap and so on in posts on this board ! Consider this as an official warning. We spend lots of our free time to make this firmware available to others, and try to help you out as good as we can. That you have little Linux knowledge is making it not easier but that is not our fault, you should be more patient and gradually you will learn enough to get it working. ;)

Now the most important information we need is as Jocko requested, to see what is the setup of your disk.
You can either use the fdisk -l command or the p command when you have accessed the disk with fdisk
It should look like this for a 2 TB disk
Code: Select all
Command (m for help): p

Disk /dev/sda: 2000.3 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks  Id System
/dev/sda1               1          64      514048+ 83 Linux
/dev/sda2              65         128      514080  83 Linux
/dev/sda3             129         192      514080  82 Linux swap
/dev/sda4             193      243201  1951969792+  5 Extended
/dev/sda5             193         292      803218+ 83 Linux
/dev/sda6             293         293        8001  83 Linux
/dev/sda7             294         357      514048+ 83 Linux
/dev/sda8             358      243201  1950644398+ 83 Linux

Important is the information on number of heads, sectors per track number of cylinders, cylinder size and units value


Oups...?
My apologies, I was upset about my own ignorance about Linux :)
Sofar Im very impressed about both the support and product!

I think I managed to post a picture in my previous post showing the fdisk -l
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Re: Installation from scratch

Postby Jocko » Tue Mar 13, 2012 7:31 pm

And about the vendor...
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Re: Installation from scratch

Postby fvdw » Tue Mar 13, 2012 7:36 pm

if you don't want the error messages then you need to use on this disk as end for partitions a number that can be divided by 8 and as start cylinder a mutiple of 8+1
for example like this
partition 1 starts cylinder 9 and end cylinder 72 (edited changed 8 in 9 !
partition 2 start 73 end 136
partition 3 start 137 en 200
partition 4 start 201 end 243200
partition 5 start 201 end 304
partition 6 start 305 end 312
partition 7 start 313 en 376
partition 8 start 377 end 243200

Look to where the error partitions appear, all on locations where end cylinder is not a multipe of 8 or start cylinder not mutiple of 8+1
The multiple of 8 is coming from 4096/512 = 8
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Re: Installation from scratch

Postby paros » Tue Mar 13, 2012 7:39 pm

Jocko wrote:And about the vendor...


Its a Seagate Barracuda 2TB.
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Re: Installation from scratch

Postby fvdw » Tue Mar 13, 2012 7:39 pm

I edited above post :mrgreen:
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Re: Installation from scratch

Postby paros » Tue Mar 13, 2012 7:44 pm

fvdw wrote:if you don't want the error messages then you need to use on this disk as end for partitions a number that can be divided by 8 and as start cylinder a mutiple of 8+1
for example like this
partition 1 starts cylinder 9 and end cylinder 72
partition 2 start 73 end 136
partition 3 start 137 en 200
partition 4 start 201 end 243200
partition 5 start 201 end 304
partition 6 start 305 end 312
partition 7 start 313 en 376
partition 8 start 377 end 243200

Look to where the error partitions appear, all on locations where end cylinder is not a multipe of 8 or start cylinder not mutiple of 8+1
The multiple of 8 is coming from 4096/512 = 8


I dont mind the warnings, I actually believe that I saw those warnings when using fdisk p, before removing the old partitions. As long as I dont suffer from performance issues or problem with data loss in the future :)
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