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Why can not change the size of hidden partition during recoverey from a hard drive to another hard drive ?

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Hello everyone, this question about ATIH 2012 confuse me a lot.
Look at the picture attached:
it says don't change the size of hidden partition during recovery from a hard drive to another drive . My think pad's hidden partition size is 1.46G, but used space only 370MB, if I don't change the space of hidden partition I will waste at least 1G, in addition, how to prove the resized hidden partition will make the same size as before ? If there was 4KB More or less, what will happen? I think we just need make sure the resized hidden partition bigger than the original used space will be fine ? For example, the original used space is 370MB, I can resize the hidden partition to 371MB will be fine ?

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673,

As your picture is an extract of my guides, I will respond. My understanding as to the need for retaining the same space is that when the programs inisde the hidden partition are put into use, it becomes the working partition so ite needs space in which to store its working files. If you reduce the space to almost the same size, the computer may continue to function but when the hidden parttions programs are needed, they may fail at the time of their need. the hidden partition boudaries are referenced in other parts of the computer data. You are certainly free to make any changes you wish in the transfer to a new disk. My response and my guides are my recommendations.

If it also possible to relocate the contents of the hidden partition, change certain configurations so that the hidden partition is not needed at all but how you would accomplish this is beyond the bounds of my guide or my response.

It would seem if the regaining of 1GB in space is ncesssary, you should consider getting a larger drive so a 1GB size difference is not of major importance.

You'd be best to ask Lenovo that question. OEMs often use proprietary formats for the stuff they place in hidden partitions, used for diagnostics, factory-state recovery, etc. It's possible that the files are in compressed state but require free disk space to expand when run.

Rather than reduce the size, which could make the utilities on that partition unusable, you might be able to entirely remove it. My Dell laptop had a hidden partition that contained files and apps to restore the laptop to factory state. I deleted that partition, thus freeing up almost 20 GB in disk space that I allocated to my user partitions.