# Format Allocation Unit Size to 64K

**URL:** <https://forums.sandisk.com/t/format-allocation-unit-size-to-64k/395270>\
**Category:** Portable SSD\
**Created:** [July 3, 2012, 8:36pm UTC](https://forums.sandisk.com/t/format-allocation-unit-size-to-64k/395270 "2012-07-03T20:36:12Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![DMoore13](https://avatars.discourse-cdn.com/v4/letter/d/ecccb3/32.png) [@DMoore13](https://forums.sandisk.com/u/DMoore13)\
**Post date:** [July 3, 2012, 8:36pm UTC](https://forums.sandisk.com/t/format-allocation-unit-size-to-64k/395270/1 "2012-07-03T20:36:12Z")

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I’m not sure if there is a thread about this already, but through my searching I found nothing of the same. I just picked up the “WD My Passport Portable Drive (1TB)” and I want to quick format the allocation unit size to 64K. I noticed that there are several folders already on the drive containing the WD Hard Drive software, security, etc. Would I be able to just copy these files to a separate folder on my desktop, reformat the allocation size and then recopy the files back to the drive without any ill effects?

Your inpur is much appreciated.&nbsp;

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**Author:** ![Wizer](https://avatars.discourse-cdn.com/v4/letter/w/43a26b/32.png) [@Wizer](https://forums.sandisk.com/u/Wizer)\
**Post date:** [July 5, 2012, 2:02pm UTC](https://forums.sandisk.com/t/format-allocation-unit-size-to-64k/395270/2 "2012-07-05T14:02:07Z")

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Yes&nbsp;

copy , reformat and then transfer the files back