Hi Rosemary, this must be concerning for you. I hope you have a TC backup of the content as a fall back. A tip I got some years ago from Daniel on drive mounting which has got me out of trouble a couple of times is to do the following.
Starting with the external drive NOT connected to the USB port Remove the cable for the external drive for the portable drive Connect the cable ONLY to the MBP USB port Wait 30 seconds (the MBP recognises that a connection has been made but with nothing on it) Then connect the portable drive to the end of the cable just plugged in, in step 3 Cross fingers and hope the drive will now mount. I have tried this on occasion when a “Disk Eject Error” results from inadvertent unplugging of an external drive. But from the sounds of what you’ve done already, I am not confident this will work for you. I am yet to move to Catalina with my MBP - mainly due to the MS Office update it would force me to do. My locally installed Office for Mac 2011 has been more than capable of covering the basic tasks I need and I have a work laptop with Office 2016 for more current tasks. But I digress sorry. If you have a TC backup of the data from the previously connected external drive when it was mounted, you may be able retrieve the data to a newly formatted and mounted drive in Catalina. I hope you can sort the drive mounting issue. Regards Peter. > On 22 Jul 2020, at 3:20 pm, Rosemary Spark <arkaysp...@gmail.com> wrote: > > Hi, > We are having problems mounting hard drives in Catalina 10.15.6, > With me it's spotty. ie some hard drives will mount....sometimes. Others not > at all. (I've Macbook Pro 13" 2017) > Unfortunately on my husband's computer none will mount. (he has early 2013) > In Disk utility sometimes the container loads but not the interior which is > grayed out. Can't mount or repair. > I've reset the PRAM and SMC multiple times. > I've used terminal to diskutil list, then diskutil info on the disks, then > ejected and re-inserted but still won't mount. > So I can't even erase/reformat (even if I wanted to) > > > Rosemary Spark > PO Box 781 > South Fremantle WA 6162 Australia > Phone: + 61 8 6397 6822 > Mobile: 0414268043 > > > -- The WA Macintosh User Group Mailing List -- > Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> > Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> > Settings & Unsubscribe - > <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>
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