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Why does my internal sata drive not show up after restart?

I run a dual boot system (Mavericks / Sierra), both on a dedicated internal SSD in a cheese grater Mac Pro 2009 (Firmware 2010). I bought a new internal HDD (Western Digital WD Black 4TB) for Libraries / Samples.

After starting the Mac all disks show up, but if I choose to restart from the other system-drive the Western Digital Disk doesn’t mount and it’s not shown in the disk utility, too.

I have to shut the Mac down. Then after rebooting all disks are back again. Also, if I do a restart but not changing the startup disk the disk comes up without problems. So the problem only occurs by doing a restart by switching the system drive.

Previously I run in the same drive bay a 1TB WD HDD with 1 TB without problems.

Does someone have any advice how to fix this issue ?

Thanks in advance and all the best

Mac Pro 2010, MacBook Pro

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8 commentaires:

Are you sure you have Sierra Vs High Sierra on your system?

par

You flashed the EFI from 4,1 to 5,1? Did you ever get the 4TB formatted?

par

@Dan: Yes, absolutely ;-)

@mayer: I made the firmware upgrade to 5,1. There was no problem to get the drive formatted (Journaled / GUID Partition Map)

par

Did you do the upgrade using Dos Dude method or another way?

par

I did the firmware upgrade using the "Mac Pro 2009-2010 Firmware Tool"

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