All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 7 posts ] 
Author Message
 Post subject: How data written in the platters ? From Outside to inside?
PostPosted: February 12th, 2019, 16:01 
Offline

Joined: February 12th, 2019, 15:39
Posts: 12
Location: London
I mean, let's imagine a platter of an empty hard disk of 500 gb formatted. Now we introduce 100 gb in files of different sizes. Are the data written in an orderly manner from the outside of the disk or from the inside? Or anarchically?. I know that defragmentation also interferes, but in this case it's all erased and there are no previously deleted files.

If someone could recommend me an article about this I would be grateful. I do not find anything interesting ..

I imagine that maybe it depends on the brand ...


Top
 Profile  
 
 Post subject: Re: How data written in the platters ? From Outside to insid
PostPosted: February 12th, 2019, 16:25 
Offline
User avatar

Joined: September 29th, 2005, 12:02
Posts: 3304
Location: Chicago
If you talking about FILES then it depends on operating system and file system.
For example: on Windows 7 and NTFS files most likely would be written from outside (OD) to inside (ID)
On ExtFS Linux files most likely would be evenly spread across the whole HDD

In general sector 0 is at OD and last sector is at ID

_________________
https://www.linkedin.com/in/artemrubtsov/


Top
 Profile  
 
 Post subject: Re: How data written in the platters ? From Outside to insid
PostPosted: February 12th, 2019, 17:24 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 11725
Location: Australia
http://www.hdtune.com/testresults.html

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: How data written in the platters ? From Outside to insid
PostPosted: February 13th, 2019, 3:21 
Offline
User avatar

Joined: May 13th, 2010, 11:17
Posts: 2525
Location: Kuwait
Doomer wrote:
If you talking about FILES then it depends on operating system and file system.
For example: on Windows 7 and NTFS files most likely would be written from outside (OD) to inside (ID)
On ExtFS Linux files most likely would be evenly spread across the whole HDD

In general sector 0 is at OD and last sector is at ID


Once i asked here the following Question Doomer: Is there any formula that controls writing to specific sectors? (like when you copy a file to HDD/flash)...

do you know? :?:

_________________
Kuwait Data Recovery - UNIX GTC
The only reason for time is so that everything doesn't happen at once. By: Albert Einstein


Top
 Profile  
 
 Post subject: Re: How data written in the platters ? From Outside to insid
PostPosted: February 13th, 2019, 5:48 
Offline

Joined: February 12th, 2019, 15:39
Posts: 12
Location: London
Doomer wrote:
If you talking about FILES then it depends on operating system and file system.
For example: on Windows 7 and NTFS files most likely would be written from outside (OD) to inside (ID)
On ExtFS Linux files most likely would be evenly spread across the whole HDD

In general sector 0 is at OD and last sector is at ID


Thanks :)

So, it depends on operating and the file system.
but...the writing from the outside is " most likely" or "allways"?


Top
 Profile  
 
 Post subject: Re: How data written in the platters ? From Outside to insid
PostPosted: February 13th, 2019, 6:00 
Offline
User avatar

Joined: December 4th, 2012, 1:35
Posts: 3378
Location: Adelaide, Australia
I don't know what it is with all these theoretical questions lately.. but anyway. I'm sure these answer could be found by the OP with a little googling, or googling to first learn how to google. It is called going down the rabbithole.

first minute I came up with this: https://forums.anandtech.com/threads/hard-drive-writing-from-outside-in-or-inside-out.415000/

next I would be looking for these documents mentioned, or something similar from a HDD vendor:

Quote:
Hard drive's start on the outer track of the platters and write their way in, yes. Although it's not just a straight run across all the platters simultaneously. I think Maxtor or Quantum have a neat little explanation of how data is written across the platters.


or troll the patent sites.

search string was: hard disk written inside outside platter starting from

probably with a little thought you could refine it to find what you need/want


Top
 Profile  
 
 Post subject: Re: How data written in the platters ? From Outside to insid
PostPosted: February 17th, 2019, 16:20 
Offline
User avatar

Joined: December 19th, 2006, 8:49
Posts: 10828
Location: Portugal
Or start here ....

http://www.hddoracle.com/viewtopic.php?f=56&t=176

_________________
1Q9xrDTzTddUXeJAFRn37aqh1Yr6buDCdw - (Bitcoin Donations)
paypal.me/Spildit - (PayPal Donations)
The HDD Oracle - Platform for OPEN research on Data Recovery.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: HaspHL and 22 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group