Comments on: Fixed Erase Process Has Failed Click Done to Continue on macOS High Sierra

By: Seth Meyers

Seth Meyers — Tue, 22 Nov 2022 07:35:00 +0000

Thank you! Worked great.

By: MUHAMMED WASIM JAVEED VONTIMETTA

MUHAMMED WASIM JAVEED VONTIMETTA — Sun, 31 Jan 2021 21:06:59 +0000

Salam mukhtar,
Any answer to Brad’s query, same here as well first aid is OK but when erasing giving the error as unable to write to the last block …

By: Mukhtar Jafari

Mukhtar Jafari — Fri, 17 Jul 2020 14:43:13 +0000

Also if you guys are interested in video tutorial please visit our video on Youtube

By: Tom Markson

Tom Markson — Mon, 27 Apr 2020 19:02:48 +0000

I have a Sandisk Ultra USB Flash Drive that became Read Only on my Mac . I can use and access what is on it but can not add or delete Files. Sandisk accepted my Warranty request for a new Flash Drive . They sent Me a RMA Shipping Label to return the Drive . The trouble is I have a lot of Private information on it so I don’t want to send them the Flash Drive .
I’ve tried Erasing the Drive using the Disk Utility several Times and always it fails to Erase or reformat .

By: Tom Gonser

Tom Gonser — Tue, 14 Apr 2020 22:37:31 +0000

Unhappily I continue to get “failed”, with the log saying “Couldn’t unmount disk: (-69888)

By: Michael Gonzalez Jr

Michael Gonzalez Jr — Fri, 27 Mar 2020 16:25:27 +0000

You are the MVP!! This worked FLAWLESSLY! Had issues with a new SSD and couldn’t get it after tons of videos i had no hope for this but it worked! Thanks!

By: Joanna Bryson

Joanna Bryson — Sat, 29 Feb 2020 15:50:09 +0000

Thank you for this. I am mostly commenting to help people who got the “couldn’t modify partition map” error — try Solution #2 above here, it worked for me!

By: Michael Moesmann Thygesen

Michael Moesmann Thygesen — Tue, 31 Dec 2019 13:12:48 +0000

In reply to Aled.

Thank you for answer, in the meantime I have tried several differentiere options.

What is most Strange is when new ssd is internal and I boot from old via usb, I manage to install on the new drive, however booting from this is not possible.

Also I can make “partition scheme” to be GUID on new Ssd when it is in external usb dock, but when putting it in internal hdd bay in the MacBook it shows up as MBR and no installation is possible, so I’m lost for options, formatting new in the internal bay does not work

I am now at the stage that I have reinstalled on the old ssd and crossing fingers it will work

By: Mukhtar Jafari

Mukhtar Jafari — Mon, 30 Dec 2019 01:54:24 +0000

In reply to Michael Thygesen. The timeframe is between 1 to 3 minutes. It should not take so long.

By: Michael Thygesen

Michael Thygesen — Sun, 29 Dec 2019 17:06:28 +0000

Hello, nice detail with chosing the entire drive as opposed to just the partition, however – mine stays at “waiting for partitions to activate”, what kind of timeframe is expected?

i have a 256gb ssd that was new, but for some reason it has ended up with a mbr not a guid,

im running catalina on a late 2012 macbook pro 13″, i5 8gb
and it worked fine until my old ssd crashed.

By: Mukhtar Jafari

Mukhtar Jafari — Fri, 30 Mar 2018 11:36:58 +0000

In reply to Aled. Thank you for sharing your feedback

By: Aled

Aled — Wed, 28 Mar 2018 21:39:38 +0000

Thanks a lot this problem stressed me out

By: Brad

Brad — Thu, 08 Feb 2018 19:37:24 +0000

In reply to Mukhtar Jafari. Yes. I can't see any volumes on the drive, just that main top USB level. When I try First Aid it completes and says there are no issues. When I try to erase, it tells me I'm unable to write to last block of device

By: Mukhtar Jafari

Mukhtar Jafari — Thu, 08 Feb 2018 13:15:17 +0000

In reply to Brad. Did you select the main drive?