Seagate external hard drive cant be read in macos sierra

Hi guys so I have 2 Seagate hard drives that works perfectly well, but when I upgraded my mac to macos sierra, it just suddenly wont read it. My mac is MacBook 2015

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Thanks!!


Finally resolved! A week and a 1/2 later plus 2 so called computer repair shops.

this helped

Perfect. Thanks!

I did this. My drive shows up in the System Report, but not in the Finder, and Pargon NTSF for Mac, now in System Preferences, lists no drives.

Guys I got GoFlex Segate 2TB OSX Journaled

The error I get:


sudo fsck_hfs -r -d /dev/disk1s1

journal_replay(/dev/disk1s1) returned 16

** /dev/rdisk1s1

Using cacheBlockSize=32K cacheTotalBlock=98304 cacheSize=3145728K.

Executing fsck_hfs (version hfs-305.10.1).

could not get volume block 2, err 16

could not get alternate volume header at 409598, err 16

volumeType is 0

0000: 00a0 bd01 0100 0000 0000 0000 0000 0000 |................|

0010: 0000 0000 0000 0000 0000 0000 0000 0000 |................|

. . .

01f0: 0000 0000 0000 0000 0000 0000 0000 0000 |................|

unknown volume type

primary MDB is at block 0 0x00

alternate MDB is at block 0 0x00

primary VHB is at block 0 0x00

alternate VHB is at block 0 0x00

sector size = 512 0x200

VolumeObject flags = 0x01

total sectors for volume = 409600 0x64000

total sectors for embedded volume = 0 0x00

CheckForClean - unknown volume type



Thanks in advance!!

Thank you very much .... this resolved the issue.

You could of damaged your drive. That happened to me on an upgrade from Mac OS X Mavericks (10.9.5) to macOS Sierra (10.12).

This driver only works with older versions of MacOS, not High Sierra.