I used WIFI to migrate from an M1 Mac to an M4, both running OS 15.1. Thunderbird still worked on the M1, but when I tried to launch it on the
M4, the system said it was damaged and should be discarded.
I downloaded and installed a replacement. Do files get corrupted in migration? Is it possible that the App simply needed the install process
on the M4 to work on the M4?
I'm worried that somewhere an important word-processing, spreadsheet,
pdf, or jpg may be corrupted. If I next need it after 5 years, a good
copy may no longer be available. Time Machine disks don't last forever.
I want to know now if any files need replacement. Would Time Machine
detect bad files? Backups have gone smoothly.
How about Disk First Aid? Maybe I should run it on principle. It
suggests that I use Recovery because the computer will be unresponsive
for minutes or hours. I don't see the point of that advice. Won't my computer also be unusable if booted in Recovery?
Do I need a third-party utility?
I used WIFI to migrate from an M1 Mac to an M4, both running OS 15.1. Thunderbird still worked on the M1, but when I tried to launch it on
the M4, the system said it was damaged and should be discarded.
I downloaded and installed a replacement. Do files get corrupted in migration? Is it possible that the App simply needed the install
process on the M4 to work on the M4?
I'm worried that somewhere an important word-processing, spreadsheet,
pdf, or jpg may be corrupted. If I next need it after 5 years, a good
copy may no longer be available. Time Machine disks don't last forever.
I want to know now if any files need replacement. Would Time Machine
detect bad files? Backups have gone smoothly.
How about Disk First Aid? Maybe I should run it on principle. It
suggests that I use Recovery because the computer will be unresponsive
for minutes or hours. I don't see the point of that advice. Won't my computer also be unusable if booted in Recovery?
Do I need a third-party utility?
On 2024-11-11 17:50:39 +0000, J Burns said:
I used WIFI to migrate from an M1 Mac to an M4, both running OS 15.1.
Thunderbird still worked on the M1, but when I tried to launch it on
the M4, the system said it was damaged and should be discarded.
That sounds like the usual MacOS Gatekeeper anti-malware system message.
It usually means nothing (unless you're downloading dodgey pirate apps)
and can be bypassed, although gets more difficult with every new version
of MacOS.
Gatekeeper would check on the first run, find the certificate is no
longer current or the app doesn't match the original install version,
and so complains that the app might be dangerous, when in reality it
isn't dangerous and isn't corrupt. Possibly the developer's certificate
was fine when the app was first run on the old computer, but for some
reason had been changed (e.g. renewed under a different name) by the
time it was first run on the new computer. Some apps alter themselves
after install for things like preference settings, auto-updates done via
the internal check, etc.
Do I need a third-party utility?
Since the app almost certainly was not corrupt, I wouldn't waste your time.
On 11/11/24 4:30 PM, Your Name wrote:
On 2024-11-11 17:50:39 +0000, J Burns said:
I used WIFI to migrate from an M1 Mac to an M4, both running OS 15.1.
Thunderbird still worked on the M1, but when I tried to launch it on
the M4, the system said it was damaged and should be discarded.
That sounds like the usual MacOS Gatekeeper anti-malware system
message. It usually means nothing (unless you're downloading dodgey
pirate apps) and can be bypassed, although gets more difficult with
every new version of MacOS.
Gatekeeper would check on the first run, find the certificate is no
longer current or the app doesn't match the original install version,
and so complains that the app might be dangerous, when in reality it
isn't dangerous and isn't corrupt. Possibly the developer's certificate
was fine when the app was first run on the old computer, but for some
reason had been changed (e.g. renewed under a different name) by the
time it was first run on the new computer. Some apps alter themselves
after install for things like preference settings, auto-updates done
via the internal check, etc.
Thank you! I wish Apple had made it clear.
Do I need a third-party utility?
Since the app almost certainly was not corrupt, I wouldn't waste your time.
I did waste 65 seconds running First Aid. I think the warning that it
could take hours was hogwash, as was the recommendation that running it
from Recovery would help. Sequoia isn't compatible with any Mac before
2018, and I guess the biggest internal drive is 1 TB SSD. How could it
take hours?
On 2024-11-12 16:00:38 +0000, J Burns said:
I did waste 65 seconds running First Aid. I think the warning that it
could take hours was hogwash, as was the recommendation that running
it from Recovery would help. Sequoia isn't compatible with any Mac
before 2018, and I guess the biggest internal drive is 1 TB SSD. How
could it take hours?
Disk First Aid can't repair some potential problems when booting and
running it from the same disk because it needs to unmount the drive. Starting up from the Recovery partition and using that copy of Disk
First Aid allows the usual boot drive to be unmounted if needed.
It shouldn't take "hours", especially on an SSD, but can take a while if
you have lots and lots of files and/or a huge capacity drive.
On 2024-11-12 16:00:38 +0000, J Burns said:
I did waste 65 seconds running First Aid. I think the warning that it
could take hours was hogwash, as was the recommendation that running
it from Recovery would help. Sequoia isn't compatible with any Mac
before 2018, and I guess the biggest internal drive is 1 TB SSD. How
could it take hours?
Disk First Aid can't repair some potential problems when booting and
running it from the same disk because it needs to unmount the drive. Starting up from the Recovery partition and using that copy of Disk
First Aid allows the usual boot drive to be unmounted if needed.
It shouldn't take "hours", especially on an SSD, but can take a while if
you have lots and lots of files and/or a huge capacity drive.
On 11/12/24 2:48 PM, Your Name wrote:
On 2024-11-12 16:00:38 +0000, J Burns said:
Apple's message says running from Recover would avoid leaving theI did waste 65 seconds running First Aid. I think the warning that it
could take hours was hogwash, as was the recommendation that running
it from Recovery would help. Sequoia isn't compatible with any Mac
before 2018, and I guess the biggest internal drive is 1 TB SSD. How
could it take hours?
Disk First Aid can't repair some potential problems when booting and
running it from the same disk because it needs to unmount the drive.
Starting up from the Recovery partition and using that copy of Disk
First Aid allows the usual boot drive to be unmounted if needed.
It shouldn't take "hours", especially on an SSD, but can take a while
if you have lots and lots of files and/or a huge capacity drive.
computer unresponsive for long.
"Verifying the startup volume will cause this computer to stop
responding. This may last for several minutes to several hours. To avoid this, you can run First Aid while in Recovery."
I don't understand. Besides, the last time Disk First Aid took long for
me, it was a mechanical drive with countless Time Machine backups.
"Verifying the startup volume will cause this computer to stop
responding. This may last for several minutes to several hours. To avoid this, you can run First Aid while in Recovery."
| Sysop: | DaiTengu |
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