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<blockquote data-quote="ray5450" data-source="post: 1896432" data-attributes="member: 409464">&quot; It is not that DU won't allow partitioning of free space, it is that it won't allow partitioning/erasing/formatting on the boot drive. &quot;--It was booting from the recovery partition (drive), which was not being affected. Apparently, it disallows anything on the physical drive, whether it is affected or not, and I was comparing that Windows will do so on the same drive, if it is not affecting the boot partition that is doing the operations.&nbsp; (Actually, as far as the installer being able to use it, the formatting I tried with Windows was not successful, as I had to start over with free space and re-do it from the Mac command line.&nbsp; I only included it to note that I had tried it.)&quot;Mac OS installers, when booted from external drives, offer Disk Utility from which to format the target of the installation.&quot;--I think you are saying here that Disk Utility IS the &quot;offer&quot; of partitioning options I mentioned.&nbsp; I should have added then, &quot;other than Disk Utility&quot;, or a more direct option.I understand what you are saying and what you posted in 8 and 11, but for some reason in this case, it just would not work that way.I do appreciate everyone's help here.</blockquote>

[QUOTE="ray5450, post: 1896432, member: 409464"] " It is not that DU won't allow partitioning of free space, it is that it won't allow partitioning/erasing/formatting on the boot drive. " --It was booting from the recovery partition (drive), which was not being affected. Apparently, it disallows anything on the physical drive, whether it is affected or not, and I was comparing that Windows will do so on the same drive, if it is not affecting the boot partition that is doing the operations. (Actually, as far as the installer being able to use it, the formatting I tried with Windows was not successful, as I had to start over with free space and re-do it from the Mac command line. I only included it to note that I had tried it.) "Mac OS installers, when booted from external drives, offer Disk Utility from which to format the target of the installation." --I think you are saying here that Disk Utility IS the "offer" of partitioning options I mentioned. I should have added then, "other than Disk Utility", or a more direct option. I understand what you are saying and what you posted in 8 and 11, but for some reason in this case, it just would not work that way. I do appreciate everyone's help here. [/QUOTE]

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