Applicable Model:
F2-220, F2-420, F4-220, F4-420, F5-420, F2-221, F2-421, F2-422, F4-221,
F4-421, F4-422, F5-221, F5-421, F5-422, F8-421, F8-422, F2-423, F4-423,
T6-423, T9-423, T12-423, T9-450, U4-423, U8-423, U8-450, U12-423
Updating TOS 5.1 requires an 8GB system partition and TOS version not lower than 5.0.176.
To check the system partition, please go to "TOS > Control Panel > System Information > Overview", and then check the free space from the "/" item. Updating TOS 5.1 when the conditions are not met will cause the TOS page to always be stuck on a blank interface, or the display "Loading..., please wait" will continue to appear. In this case, you need to reinstall the system.
Cause Analysis:
Because TOS 5.1 has more features, the system files need more storage space, so the system partition of TOS 5.1 is required to be 8GB, but the system partition created by TOS 4.x/TOS 3.x is only 2GB. If your system partition is 2GB, the update to the TOS 5.1 will fail due to insufficient system partition space.
Solution:
1. The TOS version does not meet the conditions:
Earlier TOS versions cannot be directly updated to TOS 5.1, and must be manually updated step by step in the following order: 5.0.120 -> 5.0.176 -> 5.1.24 -> 5.1.40(Or newer TOS version)
The following is the TOS update package download:
TOS 5.0.176: https://download2.terra-master.com/TOS_ ... 111430.bz2
TOS 5.1.24: https://download2.terra-master.com/TOS_ ... 270938.bz2
TOS 5.1.40: https://download2.terra-master.com/TOS_ ... 291835.bz2
2. The system partition does not meet the conditions:
If your TNAS system partition is 2G and is used normally, you can keep using the current TOS system version. If you want to update to TOS 5.1, you have to back up all the data in the hard disk, delete all hard disk partitions, and then reinstall a fresh new TOS 5.1 system.
How to delete all hard disk partitions:
1. Connect the hard disk to the PC with a SATA cable or a USB hard disk enclosure, and then use the disk management tool of the PC to delete the partitions.
2. If there is no USB hard disk enclosure and SATA cable, you can refer to this method:
After performing the following operations, the installation system will delete all data on the hard disk, please back up the data first:
a) Turn off TNAS, unplug all hard disks, turn on TNAS, and use TNAS PC to search for IP. After the search is complete, insert the hard disk that needs to delete the partition.
b), login ssh: viewtopic.php?f=78&t=2350
Username: root Password: admin Port: 9222
c) Type the following command and press the "Enter" key to view the hard disk divided into 4 partitions.
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ls /dev/sd*
For example: In the figure below, only the c drive shows four partitions, so to format the sdc disk, enter the following:
1. Type the following command and press the "Enter" key
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parted /dev/sdc
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p
3. Type the following command and press the "Enter" key to delete the fourth partition.
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rm 4
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rm 3
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rm 2
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rm 1
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q
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ls /dev/sd*
Precautions:
1. If you need to delete the hard disk partition, please back up all the data first, and deleting the partition will delete all the data.