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[Qemu-discuss] Why is QEMU disk geometry limited to 16 heads


From: Dmitry Grigoryev
Subject: [Qemu-discuss] Why is QEMU disk geometry limited to 16 heads
Date: Fri, 10 Apr 2015 19:11:40 +0200
User-agent: Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Icedove/31.5.0

Hello,

I have a disk image which won't run with QEMU. Its CHS formula is 510,255,63 isn't recognized automatically, and whenever I specify -drive file=image.raw,cyls=510,heads=255,secs=63 QEMU exits saying "invalid physical heads number".

Is there a reason why head count above 16 isn't supported? Is there a workaround to make my image usable by QEMU without losing the data?




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