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/  Forum Index
   /  Amiga OS4.x \ Workbench 4.x
      /  Current state of hard drive partitioning
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thinkchip 
Current state of hard drive partitioning
Posted on 14-Apr-2019 14:06:19
#1 ]
Super Member
Joined: 26-Mar-2004
Posts: 1116
From: Salt Lake City, Utah, USA

I have an AmigaOne 500 / SAM 460 EX with the latest OS4 version and enhancer package. I'm also using the internal SATA2 connecter on the motherboard. If I bought a 1 TB hard drive, what is the biggest partition I can create with SFS/2 or any other filing system?

_________________
AmigaOne 500(OS4.1 FE) / microA1(OS4.1 FE) / Cubic IDE / Imagine
Amiga 4000/1200/500/2500/1000 / VIC20 / C64 / SX64 / C128 / C16 / C116 / Plus/4 / PET B500
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pjhutch 
Re: Current state of hard drive partitioning
Posted on 14-Apr-2019 14:33:20
#2 ]
Regular Member
Joined: 13-May-2003
Posts: 184
From: W Yorks, UK

@thinkchip

According to SFS/2 readme:
The size of a file is limited to about 4 GB (DOSType 'SFS ',
several TB with DOSType 'SFS2').

o Support for partitions larger than 4 GB or located (partially)
beyond the 4 GB barrier on your drive. There is support for the
New Style Devices (NSD) and the 64-bit trackdisk commands (TD64)
which support 64 bit access.

o Supports partitions of up to 128 GB (DOSType 'SFS ', for 'SFS2'
partitions the limit is 1 TB, but it can be more depending on the
blocksize, with 32KB/Block it's 64 TB)

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Peter J Hutchison
http://www.pjhutchison.org/

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thinkchip 
Re: Current state of hard drive partitioning
Posted on 15-Apr-2019 13:25:19
#3 ]
Super Member
Joined: 26-Mar-2004
Posts: 1116
From: Salt Lake City, Utah, USA

@pjhutch

So if my math is right, I can create a 1-TB partition with a 512-byte block size using SFS2.

_________________
AmigaOne 500(OS4.1 FE) / microA1(OS4.1 FE) / Cubic IDE / Imagine
Amiga 4000/1200/500/2500/1000 / VIC20 / C64 / SX64 / C128 / C16 / C116 / Plus/4 / PET B500
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nbache 
Re: Current state of hard drive partitioning
Posted on 15-Apr-2019 21:18:59
#4 ]
Cult Member
Joined: 8-Apr-2003
Posts: 960
From: Copenhagen, Denmark

@thinkchip

I believe that is correct.

But do bear in mind that there are no rescue/repair tools for SFS\2, and if you create one big partition, and it develops an error, you have lost all the data in one fell swoop. Also, backing up one partition of 1 TB takes a really long time.

I would strongly recommend creating a number of smaller partitions and maybe pay attention to what you put on them, so that e.g. some partitions only contain things you don't need to backup, but can recover from other sources, while others are the ones you want backed up. This reduces the backup time as well as the risk.

Another good practice is to leave some space unallocated at the end of the disk, so that you can create an extra partition the day you need to quickly back up the data from another partition which is failing or whatever.

Best regards,

Niels

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