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RE: Wheezy Installer Auto-Partition Oddity



Hi Patrick,

> In preparation of a clean install of Wheezy, I did a test install in VirtualBox 3.1.8 running under  Fedora 12 64-bit. 
> To save time, I used the installer's default partitioning scheme.  Normally I custom partition.
> Anyway, I noticed an oddity:  There are gaps between the partitions.  Sizable ones.
> Plus, sda1 starts at 2048, not 1.  I don't know if this is due to the installer partitioner or a quirk in VirtualBox.
> I noticed this on a VB install of Debian 6, too, on the same system.  Anybody got any ideas on the why?  Wasn't able to find anything applicable on net searches.

The only reason I can think about is the new requirement for partitioning on 4k boundaries due to new harddrive specs. Harddrives used to be broken up in 512b blocks, they are now chopped up in 4k blocks. I read a good article the other day explaining the performance hits if the OS does not properly allign the partition boundaries to the new 'Advanced Format' 4k boundaries. Unfortunately that was in a paper magazine so I cannot refer to it here. But have a look at http://www.tomshardware.com/reviews/advanced-format-4k-sector-size-hard-drive,2759.html and look in Wikipedia for more info.

Bonno Bloksma



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