Mac format external drive cannot allocate memory

I know this post is old but I was having the same problem with my MBP and thought others may be too.


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Orignal HD quit and I couldn't boot under any mode. Oddly enough when I disconnected the HD and plugged it back in, it fully booted before crashing, then back to the original failure to boot every time after.


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After playing with the SATA cable a bit just to make sure it had good connections I was able to format the drive and install I think that would explain why unplugging the original HD and plugging it back in allowed it to boot once. I'm going to replace the SATA cable just to be sure, but I think this may be the problem for others with older MBPs who are trying install a new drive.

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Worst case you'll rule out the SATA connection, but this worked for me. Ivan Gorski. Help Translate iFixit. Back Answers Index. The drive where you are going to record the image has to be formatted with mac system. The disk has to have enough space. Check it. Has to be formatted for MAC System.

"Cannot allocate memory" while formatting a hard drive Mac OS X

Choose the system. End click erase. Your email address will not be published. This site uses Akismet to reduce spam. Learn how your comment data is processed. Mind you, I did not change the filesystem of the target drive!

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Thanks A. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Previous Next Sort by votes. Oct 8, 2 0 10, 0. May 6, 5, 1 24, 1, HDD's larger than 2. I don't know what on earth GT is.

Partitioning USB hard drives that fail in Disk Utility with 'POSIX' error

Hawkeye22 Champion Moderator. Feb 10, 11, 0 51, 1, NTFS is the file system format.

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GPT is the partition type. Volumes over 2. Yes, all versions can use GPT partitioned disks for data. Booting is only supported for bit editions on UEFI-based systems.

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