Shrink guest on hosted platform: Difference between revisions
Shrink guest on hosted platform (view source)
Revision as of 13:03, 25 February 2018
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== Important == | == Important == | ||
Note that the technique described below to zero out the unused space on the guest OS will in fact make your guest virtual disk grow to the maximum size first. For each byte that is changed to zero the virtual disk will need to claim a byte. This means that while you can use the technique to reclaim disk space after the unused space is zero'd out, it is important to have enough space before you start. | Note that the technique described below to zero out the unused space on the guest OS will in fact make your guest virtual disk grow to the maximum size first. For each byte that is changed to zero the virtual disk will need to claim a byte. This means that while you can use the technique to reclaim disk space after the unused space is zero'd out, it is important to have enough space before you start. | ||
If you don't have that kind of free disk space then you can skip the zero-ing out part. You can still reclaim space, but it will be less optimal. | |||
==== Zero out unused space in a Linux VM ==== | ==== Zero out unused space in a Linux VM ==== | ||