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I have MacBook Pro Early 2015 13" with 34.49 GB available of 121 GB. The current system (Mojave) is using 51.64 GB. So I could not download Big Sur. A Pop-up said not enough space. My Aps take up 29 GB and I've already removed all my photos. My Documents take up only 6.21 GB. Should I remove them too? What am I missing? Doesn't Big Sur write over Mojave?
MacBook Pro 13″, macOS 10.14
There are several points to consider before attempting the upgrade to Big Sur. The most important is Due Diligence on the part of the User and is a Prerequisite for a smooth upgrade.
The below points should all be consider Before attempting the upgrade.
Point # 1 - Are there pre-existing Unresolved Software Issues. They should be resolved prior to upgrading - many will / may carryover to Big Sur making the system unstable / unusable.
Point # 2 - What are the System Requirements ie: Empty Space Requirements specific to the Big Sur.
Point # 3 - Does the intended computer qualify for to upgrade.
Point # 4 - Is the existing System File System meet the file system requirements of Big Sur. Like Catalina - Big Sur requires the drive be formatted as APFS and does not automatically convert HFS Journaled to APFS.
Point # 5 - Are the installed Applications / Extensions compatible with Big Sur. Check with the Developer for compatible Apps / extension or do they offer updates. Same goes for Third Party Drivers for Printer, Scanners etc.
Point # 6 - Do I have a Rescue Plan In-Place. This comprises having a Time Machine Backup and for addition purposes - two Tested Bootable Clones each to separate external drives. This is insurance incase the upgrades goes sideways
Point # 7 - Are there any AntiVirus, Disk Cleaner, Optimizers, Defrag, VPNs etc installed which should be removed as per Developers Instructions. They are useless, unneeded, cause havoc and interfere with the normal operation of the OS. The Built-in Security of Big Sur is all that is required.
Point # 8 - to upgrade to Big Sur will require a quick, stable and reliable Internet Connection - preferred method is via Ethernet Connection. If not available and using Wifi - move computer as close to the Access Point / Router and disconnect all other devices connected to Wifi. Want the maximum bandwidth for the computer being upgraded to Big Sur.
There are several points to consider before attempting the upgrade to Big Sur. The most important is Due Diligence on the part of the User and is a Prerequisite for a smooth upgrade.
The below points should all be consider Before attempting the upgrade.
Point # 1 - Are there pre-existing Unresolved Software Issues. They should be resolved prior to upgrading - many will / may carryover to Big Sur making the system unstable / unusable.
Point # 2 - What are the System Requirements ie: Empty Space Requirements specific to the Big Sur.
Point # 3 - Does the intended computer qualify for to upgrade.
Point # 4 - Is the existing System File System meet the file system requirements of Big Sur. Like Catalina - Big Sur requires the drive be formatted as APFS and does not automatically convert HFS Journaled to APFS.
Point # 5 - Are the installed Applications / Extensions compatible with Big Sur. Check with the Developer for compatible Apps / extension or do they offer updates. Same goes for Third Party Drivers for Printer, Scanners etc.
Point # 6 - Do I have a Rescue Plan In-Place. This comprises having a Time Machine Backup and for addition purposes - two Tested Bootable Clones each to separate external drives. This is insurance incase the upgrades goes sideways
Point # 7 - Are there any AntiVirus, Disk Cleaner, Optimizers, Defrag, VPNs etc installed which should be removed as per Developers Instructions. They are useless, unneeded, cause havoc and interfere with the normal operation of the OS. The Built-in Security of Big Sur is all that is required.
Point # 8 - to upgrade to Big Sur will require a quick, stable and reliable Internet Connection - preferred method is via Ethernet Connection. If not available and using Wifi - move computer as close to the Access Point / Router and disconnect all other devices connected to Wifi. Want the maximum bandwidth for the computer being upgraded to Big Sur.
You need 35.5GBs of free space to install Big Sur.
Can't download Big Sur
