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[Qemu-devel] Question about maximum disk size of a dynamic hard disk


From: Lyu Mitnick
Subject: [Qemu-devel] Question about maximum disk size of a dynamic hard disk
Date: Wed, 13 Apr 2011 20:47:07 +0800

Hello Kevin, Stefan and all

There is a sentence "The maximum size of a dynamic hard disk is 2040 GB. 
The actual size is restricted by the underlying disk hardware protocol. For example, 
ATA hard disks have a 127-GB limit" in VHD specification. This limitation infected the
algorithm of block/vpc.c:calculate_geometry(). However, SATA disk is used to 
replace traditional IDE disk now. I am wondering whether is possible to support that
VHD is bigger than 127-GB(SATA disk underlying)??

Thanks

Mitnick

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