Go Back   FileForums > Off Topic > Software

Reply
 
Thread Tools Display Modes
  #1  
Old 08-04-2021, 21:04
acal3000 acal3000 is offline
Registered User
 
Join Date: Dec 2004
Location: Dancing with the Death
Posts: 451
Thanks: 0
Thanked 8 Times in 5 Posts
acal3000 is on a distinguished road
Low Level Format

Just a question It is true Low Level Format no longer existe nowdays ??..
Reply With Quote
Sponsored Links
  #2  
Old 09-04-2021, 03:18
Joe Forster/STA's Avatar
Joe Forster/STA Joe Forster/STA is offline
Senior forum member
 
Join Date: Nov 2000
Location: Hungary
Posts: 9,616
Thanks: 6
Thanked 268 Times in 171 Posts
Joe Forster/STA is on a distinguished road
Quote:
Originally Posted by acal3000 View Post
Just a question It is true Low Level Format no longer existe nowdays ??..
No, it doesn't, hard disks are so sophisticated today that you cannot erase all information from them and expect them to still work.

Imagine a vinyl record. There's a spiral groove in it. You can take a very thin nail and change the depth of the groove manually (changing the data = sound) but your normal vinyl player is unable to etch a new groove onto an unwritten record because the player can't etch (write) such a dense groove properly, only follow (read) an already existing dense groove.

On newer hard disks, tracks (not spiral grooves but concentric circles) are so dense that small changes in the temperature makes the read/write head expand/contract so much that they won't be able to follow tracks exactly. Also, some wobbling is expected when the read/write head must constantly move inwards/outwards slightly to follow the track because the center of the track circle may not be exactly the same as the platter's spin axis. The servo information that helps the read/write head to follow the track is written onto the disk surface in the factory - with a machine much finer, much more sophisticated and much more expensive -, it's not possible to rewrite it properly with a consumer hard disk. What you can do is change the information in the data tracks that are between the servo tracks. See https://en.wikipedia.org/wiki/Servowriter .
__________________
Joe Forster/STA
For more information, see the FileForums forum rules and the PC Games forum FAQ!
Don't contact me via E-mail or PM to ask for help with anything other than patches (or software in general) done by me, otherwise your request may be deleted without any reply!
Homepage: http://sta.c64.org, E-mail: [email protected]; for attachments, send compressed (ZIP or RAR) files only, otherwise your E-mail will bounce back!
Reply With Quote
The Following User Says Thank You to Joe Forster/STA For This Useful Post:
Epic Titan 69 (09-04-2021)
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Best Compression Format DRAGoN.X Chit Chat 11 07-09-2017 23:13
PS2 HDD and HD Advance wants to format on every restart B11TME PS2 Games 4 07-04-2005 03:46
RecordNow and the *.gi ISO format ADROiT PS2 Games 1 05-02-2004 05:35
need help bad !!!! toviolent XBox Games 3 06-05-2003 17:31
I need help backing up my original HD, PLEASE!!! devilsminion XBox Games 2 01-05-2003 19:52



All times are GMT -7. The time now is 05:20.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Copyright 2000-2020, FileForums @ https://fileforums.com