Re: Using the a temp drive on a protected EWF drive.

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From: TEX (zedex_at_spammenot.com)
Date: 02/24/04 

Date: Tue, 24 Feb 2004 19:42:04 +1300

Slobodan Brcin (eMVP) wrote:

>>Have found that when an overlayed drive is filled with a large quantity
>>of files and then deleted then the space cannot be recovered without
>>rebooting. Although the recycle bin shows empty, running ewfmgr shows
>>the overlay still has files to be written.
>
>
> You are 100% correct about this, since EWF protect whole partition without
> knowing the file system on this partition, it is logical that it have no
> idea about your attempt to delete some files, since EWF does not know
> anything about files, only about changed sectors on protected partition.
>
>
>>We are using a overlay to protect a drive that has an image to write
>>dvd's. Problem is that after a dvd is written (utilising a pre allocated
>>space of 4.7gb)...you are stuffed since you can't recover the space the
>>temp dvd image file has used.
>
>
> This is interesting approach, would you like to give us some hint why did
> you protected temporary storage partition?
> What do you expect to gain by this?

Just how I was asked to do it. Stupid I thought. Firstly the system
writes and deletes from the system drive, requires the use of a temp
folder to write DVDs and the swap file is also set to the system drive.
This is silly since every write/delete is allocating space and then
unable to recover the space until a commit is applied.

> When you write data to this partition, all changes go to EWF overlay
> partition. So HDD is not saved from writes, they are merely reallocated.
>
> You should not protect temporary partition that you are using for DVD
> content creation.
>
> Regards,
> Slobodan
>
>>Other alternatives of a ram drive is not possible.
>>
>>Is there other solutions??? Comments welcome.
>>
I was trying to find alternative solutions since ewf relies on the use
on basic disks, and max number of partitions is 4 per basic disk, and we
  already have 3.

TEX

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