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Old 05-30-2009, 07:13 AM   #1
linus72
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How long can a partitioned virtual harddrive holds it's data without corruption?


OK, partitioned or not, is a vhd as viable as a real hd?
Is there a certain point at which it becomes corrupted or
malfunctions 'cause it's like not real?
So, basically life expectancy of vhd after making 3-4 partitions and
whether any important data can be safely put there?
Thanks
 
Old 05-30-2009, 07:19 AM   #2
repo
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From wikipedia:

Quote:
VHDs are implemented as files that reside on the native host file system. The following types of VHD formats are supported by Microsoft Virtual PC and Virtual Server:

* Fixed hard disk image - a file that is allocated to the size of the virtual disk.
* Dynamic hard disk image - a file that at any given time is as large as the actual data written to it, plus the size of the header and footer.
So it is just a file.
 
Old 05-30-2009, 07:27 AM   #3
linus72
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Hey repo, meaning it's safe to store info there-like if I put a folder in there with
my Credit card number or something(just an example), it'll be there next month when
I reopen the vhd?

Also, I can't seem to create a extended partition with cfdisk- I tried using
type 05 and 85, but neither lets me create more partitions afterwards-what am I doing wrong?

Also, does partitioning the vhd hurt it's ability to save info,etc?
 
Old 05-30-2009, 07:42 AM   #4
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Quote:
it's safe to store info there-like if I put a folder in there with
my Credit card number or something(just an example), it'll be there next month when
I reopen the vhd?
Why not, it's just a file, so if you don't delete it, it will still be there.

Quote:
Also, does partitioning the vhd hurt it's ability to save info,etc?
It's just a file
 
Old 05-30-2009, 07:52 AM   #5
linus72
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OK, so how would I mount it?
Is that possible?
A qemu-img that is...
Thanks
 
Old 05-30-2009, 08:05 AM   #6
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Quote:
OK, so how would I mount it?
Why do you want to mount it ?
 
Old 05-30-2009, 08:07 AM   #7
linus72
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Because I do...so how to mount qemu-img?
 
Old 05-30-2009, 08:22 AM   #8
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Try it, see what it does, you cant hurt it by trying
 
Old 05-30-2009, 08:27 AM   #9
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Code:
mount /tmp/diskC.img /mnt/loop -o loop,offset=32256 -t vfat
However, the QEMU img file must be RAW, not qcow or any other format. If you did accidentally use qcow or something, qemu-img can convert it into RAW.
 
Old 05-30-2009, 08:34 AM   #10
linus72
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OK, problem now is FS type ...the vhd has 4 partitions, 2 are ext3 and one ext2 with swap on 4th.
So, when mounting what fs type do I tell it? ext2 I tried....
 
Old 05-30-2009, 08:40 AM   #11
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Never tried with a partitioned image.
Perhaps you can find some pointers at
http://equivocation.org/node/107
 
  


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